Species Recorded | Taxon | Scientific Name | Common Name | Records | Latest |
| algae or stonewort | Elachista | an Elachista species (unidentified) | 2 | 2021 |
| algae or stonewort | Enteromorpha | a grass-kelp (unidentified) | 14 | 2004 |
| ant, bee, wasp, sawfly or ichneumon (and others) | Earinus gloriatorius | a braconid wasp | 1 | 1995 |
| ant, bee, wasp, sawfly or ichneumon (and others) | Echthroplexis puncticollis | a parasitic wasp | 1 | 1997 |
| ant, bee, wasp, sawfly or ichneumon (and others) | Ectemnius | an Ectemnius solitary wasp (unidentified) | 3 | 2016 |
| ant, bee, wasp, sawfly or ichneumon (and others) | Ectemnius cavifrons | a solitary wasp | 8 | 2020 |
| ant, bee, wasp, sawfly or ichneumon (and others) | Ectemnius cephalotes | a solitary wasp | 3 | 1999 |
| ant, bee, wasp, sawfly or ichneumon (and others) | Ectemnius continuus | a solitary wasp | 31 | 2022 |
| ant, bee, wasp, sawfly or ichneumon (and others) | Ectemnius lituratus | a solitary wasp | 14 | 2020 |
| ant, bee, wasp, sawfly or ichneumon (and others) | Ectemnius ruficornis | a solitary wasp | 6 | 2005 |
| ant, bee, wasp, sawfly or ichneumon (and others) | Ectemnius sexcinctus | a solitary wasp | 1 | 2005 |
| ant, bee, wasp, sawfly or ichneumon (and others) | Empria excisa | a sawfly | 1 | 2001 |
| ant, bee, wasp, sawfly or ichneumon (and others) | Empria pallimacula | a sawfly | 2 | 2004 |
| ant, bee, wasp, sawfly or ichneumon (and others) | Empria pumila | a sawfly | 1 | 2004 |
| ant, bee, wasp, sawfly or ichneumon (and others) | Empria sexpunctata | a sawfly | 1 | 2006 |
| ant, bee, wasp, sawfly or ichneumon (and others) | Enizemum ornatum | an ichneumon wasp | 3 | 2003 |
| ant, bee, wasp, sawfly or ichneumon (and others) | Entomognathus brevis | a solitary wasp | 5 | 2006 |
| ant, bee, wasp, sawfly or ichneumon (and others) | Epeolus cruciger | a nomad or mason bee | 3 | 2016 |
| ant, bee, wasp, sawfly or ichneumon (and others) | Ephialtes manifestator | an ichneumon wasp | 1 | 2008 |
| ant, bee, wasp, sawfly or ichneumon (and others) | Episyron rufipes | Red Legged Spider Wasp | 10 | 1998 |
| ant, bee, wasp, sawfly or ichneumon (and others) | Epitomus infuscatus | an ichneumon wasp | 1 | 2009 |
| ant, bee, wasp, sawfly or ichneumon (and others) | Eridolius pictus | an ichneumon wasp | 1 | 1998 |
| ant, bee, wasp, sawfly or ichneumon (and others) | Erigorgus cerinops | an ichneumon wasp | 1 | 2006 |
| ant, bee, wasp, sawfly or ichneumon (and others) | Eriocampa ovata | a sawfly | 3 | 2022 |
| ant, bee, wasp, sawfly or ichneumon (and others) | Erythromalus nubilipennis | a chalcid wasp | 2 | 2009 |
| ant, bee, wasp, sawfly or ichneumon (and others) | Eucera longicornis | a long-horned bee | 2 | 2011 |
| ant, bee, wasp, sawfly or ichneumon (and others) | Eupelmus urozonus | a chalcid wasp | 28 | 2003 |
| ant, bee, wasp, sawfly or ichneumon (and others) | Eurytoma brunniventris | a chalcid wasp | 4 | 1997 |
| ant, bee, wasp, sawfly or ichneumon (and others) | Eurytoma rosae | a chalcid wasp | 1 | 1998 |
| ant, bee, wasp, sawfly or ichneumon (and others) | Eutomostethus ephippium | a sawfly | 2 | 2018 |
| ant, bee, wasp, sawfly or ichneumon (and others) | Eutomostethus gagathinus | a sawfly | 1 | 2004 |
| ant, bee, wasp, sawfly or ichneumon (and others) | Eutomostethus luteiventris | a sawfly | 2 | 2004 |
| ant, bee, wasp, sawfly or ichneumon (and others) | Euura anomaloptera | a sawfly | 1 | 1999 |
| ant, bee, wasp, sawfly or ichneumon (and others) | Euura atra | a sawfly | 1 | 2000 |
| ant, bee, wasp, sawfly or ichneumon (and others) | Euura bridgmanii | a sawfly | 1 | 2020 |
| ant, bee, wasp, sawfly or ichneumon (and others) | Euura kirbyi | a sawfly | 2 | 2002 |
| ant, bee, wasp, sawfly or ichneumon (and others) | Euura myosotidis | an insect - hymenopteran | 2 | 2002 |
| ant, bee, wasp, sawfly or ichneumon (and others) | Euura pavida | a sawfly | 1 | 2020 |
| ant, bee, wasp, sawfly or ichneumon (and others) | Euura pedunculi | a sawfly | 1 | 1998 |
| ant, bee, wasp, sawfly or ichneumon (and others) | Euura proxima | Willow Redgall Sawfly | 21 | 2022 |
| ant, bee, wasp, sawfly or ichneumon (and others) | Euura ribesii | a sawfly | 1 | 1991 |
| ant, bee, wasp, sawfly or ichneumon (and others) | Evagetes crassicornis | a spider-hunting wasp | 1 | 1951 |
| ant, bee, wasp, sawfly or ichneumon (and others) | Exallonyx ater | a small parasitic wasp | 2 | 1995 |
| ant, bee, wasp, sawfly or ichneumon (and others) | Exallonyx (Exallonyx) subserratus (s.lat.) | a parasitic wasp | 1 | 1996 |
| ant, bee, wasp, sawfly or ichneumon (and others) | Exallonyx formicarius | a small parasitic wasp | 1 | 2002 |
| ant, bee, wasp, sawfly or ichneumon (and others) | Exallonyx trifoveatus | a parasitic wasp | 3 | 2002 |
| ant, bee, wasp, sawfly or ichneumon (and others) | Exochus pictus | an insect - hymenopteran | 1 | 2002 |
| beetle | Elaphropus parvulus | a ground beetle | 2 | 2014 |
| beetle | Elaphrus cupreus | a ground beetle | 2 | 2021 |
| beetle | Elaphrus riparius | a ground beetle | 7 | 2021 |
| beetle | Elateridae | a click beetle (unidentified) | 20 | 2023 |
| beetle | Elateroidea | an Elateroidea species (unidentified) | 1 | 2023 |
| beetle | Eledona agricola | a darkling beetle | 2 | 2017 |
| beetle | Elmidae | a Elmidae riffle beetle (unidentified) | 22 | 2003 |
| beetle | Elmis aenea | a riffle beetle | 25 | 2013 |
| beetle | Elodes | an Elodes species (unidentified) | 2 | 1997 |
| beetle | Elodes elongata | a marsh beetle | 3 | 2001 |
| beetle | Elodes minuta | a marsh beetle | 1 | 1990 |
| beetle | Elodes pseudominuta | a marsh beetle | 2 | 2000 |
| beetle | Endomychus coccineus | a false ladybird | 4 | 2018 |
| beetle | Enicmus brevicornis | a mould beetle | 8 | 2017 |
| beetle | Enicmus histrio | a mould beetle | 4 | 2020 |
| beetle | Enicmus rugosus | a mould beetle | 11 | 2021 |
| beetle | Enicmus testaceus | a mould beetle | 26 | 2021 |
| beetle | Enicmus transversus | a mould beetle | 14 | 2022 |
| beetle | Ennearthron cornutum | a small fungus beetle | 4 | 2020 |
| beetle | Enochrus | an Enochrus species (unidentified) | 3 | 2013 |
| beetle | Enochrus bicolor | a scavenger water beetle | 3 | 2009 |
| beetle | Enochrus coarctatus | a scavenger water beetle | 24 | 2011 |
| beetle | Enochrus fuscipennis | a scavenger water beetle | 1 | 2013 |
| beetle | Enochrus melanocephalus | a scavenger water beetle | 9 | 2022 |
| beetle | Enochrus ochropterus | a scavenger water beetle | 3 | 2013 |
| beetle | Enochrus quadripunctatus | a scavenger water beetle | 1 | 2013 |
| beetle | Enochrus quadripunctatus agg. | a scavenger water beetle | 1 | 1999 |
| beetle | Enochrus testaceus | a scavenger water beetle | 81 | 2022 |
| beetle | Epiphanis cornutus | a false click beetle | 1 | 2016 |
| beetle | Epitrix pubescens | a leaf beetle | 3 | 2001 |
| beetle | Epuraea aestiva | a pollen or sap beetle | 12 | 2020 |
| beetle | Epuraea biguttata | a pollen or sap beetle | 3 | 2020 |
| beetle | Epuraea fuscicollis | a pollen or sap beetle | 1 | 2021 |
| beetle | Epuraea limbata | a pollen or sap beetle | 2 | 2020 |
| beetle | Epuraea melanocephala | a pollen or sap beetle | 6 | 2020 |
| beetle | Epuraea melina | a pollen or sap beetle | 1 | 2022 |
| beetle | Ernobius mollis | a wood boring beetle | 2 | 2019 |
| beetle | Ernoporicus caucasicus | a bark or ambrosia beetle | 3 | 2002 |
| beetle | Eubrychius velutus | a weevil | 4 | 1999 |
| beetle | Euglenes oculatus | an aderid beetle | 14 | 2021 |
| beetle | Euophryum confine | a Wood-boring Weevil | 44 | 2021 |
| beetle | Euplectus brunneus | a short-winged mould beetle | 1 | 2019 |
| beetle | Euplectus piceus | a short-winged mould beetle | 3 | 2016 |
| beetle | Eusphalerum luteum | a rove beetle | 9 | 2018 |
| beetle | Eusphalerum minutum | a rove beetle | 1 | 2017 |
| beetle | Eusphalerum primulae | a rove beetle | 1 | 2021 |
| beetle | Eutrichapion ervi | a seed weevil | 34 | 2022 |
| beetle | Eutrichapion punctigerum | a seed weevil | 6 | 2010 |
| beetle | Eutrichapion viciae | a seed weevil | 12 | 2021 |
| beetle | Eutrichapion vorax | a seed weevil | 4 | 2021 |
| beetle | Exapion fuscirostre | a seed weevil | 2 | 2000 |
| beetle | Exapion ulicis | Gorse Weevil | 17 | 2021 |
| beetle | Exochomus quadripustulatus | Pine Ladybird | 42 | 2022 |
| bird | Egretta | an Egretta species (unidentified) | 6 | 2022 |
| bird | Egretta garzetta | Little Egret | 21483 | 2024 |
| bird | Egretta garzetta or Bubulcus ibis | Little Egret or Cattle Egret (unidentified) | 8 | 2010 |
| bird | Emberiza bruniceps | Red-headed Bunting | 1 | 1998 |
| bird | Emberiza calandra | Corn Bunting | 2096 | 2022 |
| bird | Emberiza cirlus | Cirl Bunting | 4 | 1986 |
| bird | Emberiza citrinella | Yellowhammer | 6907 | 2023 |
| bird | Emberiza hortulana | Ortolan Bunting | 3 | 2018 |
| bird | Emberiza pusilla | Little Bunting | 2 | 2021 |
| bird | Emberiza schoeniclus | Reed Bunting | 12667 | 2024 |
| bird | Emberizidae | a bunting (unidentified) | 1 | 2018 |
| bird | Eremophila alpestris | Shore Lark | 59 | 2017 |
| bird | Erithacus rubecula | Robin | 69195 | 2024 |
| bird | Euplectes | a euplectes bishop or widow-bird (unidentified) | 1 | 2004 |
| booklouse or barklouse | Ectopsocus briggsi agg. (briggsi/petersi/meridionalis) | a booklouse or barklouse | 16 | 2020 |
| booklouse or barklouse | Ectopsocus petersi | an insect - booklouse (Psocoptera) | 10 | 2020 |
| booklouse or barklouse | Elipsocus hyalinus | a booklouse or barklouse | 4 | 2020 |
| booklouse or barklouse | Elipsocus pumilis (sensu lato) | a booklouse or barklouse | 2 | 2009 |
| bryozoan | Einhornia crustulenta | a sea mat | 6 | 1976 |
| bryozoan | Electra monostachys | a sea mat | 7 | 1995 |
| bryozoan | Escharella immersa | a bryozoan | 3 | 1976 |
| bug | Edwardsiana rosae | a leafhopper | 1 | 2020 |
| bug | Elasmostethus interstinctus | Birch Shieldbug | 190 | 2023 |
| bug | Elasmucha grisea | Parent Bug | 53 | 2023 |
| bug | Elatobium abietinum | Green Spruce Aphid | 8 | 1975 |
| bug | Elymana sulphurella | a leafhopper | 1 | 2002 |
| bug | Empicoris vagabundus | an assassin bug | 5 | 2022 |
| bug | Empoasca | an Empoasca species (unidentified) | 3 | 2020 |
| bug | Empoasca decipiens | a leafhopper | 3 | 1996 |
| bug | Empoasca vitis | a leafhopper | 9 | 2022 |
| bug | Eremocoris podagricus | a ground bug | 1 | 2023 |
| bug | Eriosoma ulmi | an aphid | 9 | 1975 |
| bug | Eucallipterus tiliae | Lime Aphid | 6 | 2020 |
| bug | Euconomelus lepidus | a planthopper | 2 | 2009 |
| bug | Euides basilinea | a planthopper | 2 | 2018 |
| bug | Eupelix cuspidata | a leafhopper | 2 | 2003 |
| bug | Eupterycyba jucunda | a leafhopper | 3 | 2023 |
| bug | Eupteryx aurata | a leafhopper | 52 | 2023 |
| bug | Eupteryx filicum | a leafhopper | 2 | 2021 |
| bug | Eupteryx florida | a leafhopper | 2 | 2019 |
| bug | Eupteryx melissae | a leafhopper | 12 | 2020 |
| bug | Eupteryx stachydearum | a leafhopper | 1 | 2008 |
| bug | Eupteryx urticae | a leafhopper | 22 | 2023 |
| bug | Eupteryx vittata | a leafhopper | 3 | 2019 |
| bug | Eurhadina concinna | a leafhopper | 1 | 2019 |
| bug | Eurhadina loewii | a leafhopper | 1 | 1996 |
| bug | Eurhadina pulchella | a leafhopper | 3 | 2021 |
| bug | Eurydema | an Eurydema species (unidentified) | 1 | 2018 |
| bug | Eurydema (Eurydema) oleracea | Brassica Bug | 87 | 2023 |
| bug | Eurygaster | an Eurygaster species (unidentified) | 1 | 2017 |
| bug | Eurygaster maura | a shield bug | 1 | 1957 |
| bug | Eurygaster testudinaria | Tortoise Bug | 127 | 2023 |
| bug | Euscelis incisus | a leafhopper | 21 | 2022 |
| bug | Euscelis lineolatus | a leafhopper | 2 | 2018 |
| bug | Evacanthus acuminatus | a leafhopper | 4 | 2020 |
| bug | Evacanthus interruptus | a leafhopper | 19 | 2022 |
| bug | Eysarcoris venustissimus | Woundwort Shield Bug | 103 | 2023 |
| cockroach | Ectobius panzeri | Lesser Cockroach | 1 | 1938 |
| crustacean | Echinogammarus marinus | a crustacean | 11 | 1940 |
| crustacean | Echinogammarus obtusatus | a crustacean | 6 | 2007 |
| crustacean | Eucyclops agilis | a crustacean | 1 | 1979 |
| dragonfly, hawker or damselfly | Enallagma cyathigerum | Common Blue Damselfly | 1724 | 2023 |
| dragonfly, hawker or damselfly | Erythromma najas | Red-eyed Damselfly | 353 | 2023 |
| dragonfly, hawker or damselfly | Erythromma viridulum | Small Red-eyed Damselfly | 54 | 2021 |
| echinoderm | Echinodermata | an Echinodermata species (unidentified) | 10 | 2006 |
| false scorpion | Ephippiochthonius tetrachelatus | a false scorpion | 2 | 1972 |
| fish | Echiichthys vipera | Lesser Weever | 1 | 1933 |
| fish | Enchelyopus cimbrius | Four-bearded Rockling | 1 | 1999 |
| fish | Engraulis encrasicolus | Anchovy | 1 | 1933 |
| fish | Entelurus aequoreus | Snake Pipefish | 1 | 1940 |
| fish | Esox lucius | Pike | 65 | 2021 |
| fish | Eutrigla gurnardus | Grey Gurnard | 3 | 1938 |
| fungus | Echinoderma asperum | a basidiomycete fungus | 45 | 2014 |
| fungus | Echinoderma calcicola | a fungus | 1 | 2002 |
| fungus | Echinoderma echinaceum | an agaric | 6 | 2013 |
| fungus | Echinoderma hystrix | an agaric | 6 | 1997 |
| fungus | Echinoderma jacobi | a fungus | 1 | 2008 |
| fungus | Echinoderma perplexum | a fungus | 3 | 2020 |
| fungus | Elaphomyces granulatus | an ascomycete fungus | 1 | 1959 |
| fungus | Elaphomyces muricatus | an ascomycete fungus | 1 | 1959 |
| fungus | Encoelia furfuracea | an ascomycete fungus | 13 | 2005 |
| fungus | Entoloma | a Nolanea basidiomycete fungus (unidentified) | 5 | 2017 |
| fungus | Entoloma ameides | a basidiomycete fungus | 19 | 2013 |
| fungus | Entoloma anatinum | a basidiomycete fungus | 2 | 1997 |
| fungus | Entoloma aprile | a basidiomycete fungus | 1 | 1994 |
| fungus | Entoloma araneosum | a basidiomycete fungus | 4 | 2012 |
| fungus | Entoloma asprellum | a basidiomycete fungus | 6 | 2002 |
| fungus | Entoloma atrocoeruleum | a basidiomycete fungus | 6 | 2008 |
| fungus | Entoloma atromarginatum | a basidiomycete fungus | 3 | 2007 |
| fungus | Entoloma bloxamii | Big Blue Pinkgill | 24 | 2020 |
| fungus | Entoloma caeruleum | a basidiomycete fungus | 3 | 2006 |
| fungus | Entoloma caesiocinctum | a basidiomycete fungus | 5 | 2010 |
| fungus | Entoloma catalaunicum | a basidiomycete fungus | 17 | 2011 |
| fungus | Entoloma cetratum | a basidiomycete fungus | 3 | 2005 |
| fungus | Entoloma chalybeum | a basidiomycete fungus | 1 | 2012 |
| fungus | Entoloma chalybeum var. chalybeum | a basidiomycete fungus | 24 | 2013 |
| fungus | Entoloma chalybeum var. lazulinum | a basidiomycete fungus | 10 | 2007 |
| fungus | Entoloma chloropolium | a fungus | 1 | 2008 |
| fungus | Entoloma clandestinum | a basidiomycete fungus | 1 | 2007 |
| fungus | Entoloma clypeatum | a basidiomycete fungus | 50 | 2012 |
| fungus | Entoloma cocles | a fungus | 2 | 2009 |
| fungus | Entoloma conferendum | a basidiomycete fungus | 6 | 2014 |
| fungus | Entoloma conferendum var. conferendum | a basidiomycete fungus | 48 | 2010 |
| fungus | Entoloma corvinum | a basidiomycete fungus | 20 | 2011 |
| fungus | Entoloma cruentatum | a basidiomycete fungus | 5 | 2010 |
| fungus | Entoloma cuspidiferum | a basidiomycete fungus | 1 | 2006 |
| fungus | Entoloma euchroum | a basidiomycete fungus | 2 | 2012 |
| fungus | Entoloma excentricum | a basidiomycete fungus | 1 | 2007 |
| fungus | Entoloma exile | a basidiomycete fungus | 19 | 2014 |
| fungus | Entoloma fernandae | a basidiomycete fungus | 2 | 2002 |
| fungus | Entoloma formosum | a basidiomycete fungus | 1 | 2005 |
| fungus | Entoloma griseocyaneum | a basidiomycete fungus | 67 | 2015 |
| fungus | Entoloma hebes | a basidiomycete fungus | 134 | 2020 |
| fungus | Entoloma hirtipes | a basidiomycete fungus | 12 | 2013 |
| fungus | Entoloma incanum | a basidiomycete fungus | 29 | 2015 |
| fungus | Entoloma incarnatofuscescens | a basidiomycete fungus | 3 | 2010 |
| fungus | Entoloma infula | a basidiomycete fungus | 1 | 2014 |
| fungus | Entoloma infula var. infula | a basidiomycete fungus | 53 | 2015 |
| fungus | Entoloma inusitatum | a fungus | 2 | 2014 |
| fungus | Entoloma jubatum | a basidiomycete fungus | 4 | 1989 |
| fungus | Entoloma juncinum | a basidiomycete fungus | 2 | 2006 |
| fungus | Entoloma lampropus | a basidiomycete fungus | 14 | 2006 |
| fungus | Entoloma lividoalbum | a basidiomycete fungus | 1 | 2000 |
| fungus | Entoloma lividocyanulum | a basidiomycete fungus | 7 | 1999 |
| fungus | Entoloma longistriatum | a basidiomycete fungus | 10 | 2020 |
| fungus | Entoloma longistriatum var. longistriatum | a basidiomycete fungus | 17 | 2009 |
| fungus | Entoloma longistriatum var. microsporum | a fungus | 12 | 2014 |
| fungus | Entoloma longistriatum var. sarcitulum | a basidiomycete fungus | 13 | 2010 |
| fungus | Entoloma madidum | a fungus | 3 | 2016 |
| fungus | Entoloma minutum | a basidiomycete fungus | 1 | 2005 |
| fungus | Entoloma moserianum | a basidiomycete fungus | 1 | 2016 |
| fungus | Entoloma mougeotii var. mougeotii | a basidiomycete fungus | 14 | 2010 |
| fungus | Entoloma nigroviolaceum | a basidiomycete fungus | 1 | 1987 |
| fungus | Entoloma nitidum | a basidiomycete fungus | 1 | 2001 |
| fungus | Entoloma ortonii | a basidiomycete fungus | 12 | 1996 |
| fungus | Entoloma papillatum | a basidiomycete fungus | 62 | 2019 |
| fungus | Entoloma pleopodium | a basidiomycete fungus | 5 | 2015 |
| fungus | Entoloma poliopus var. discolor | a fungus | 2 | 2010 |
| fungus | Entoloma poliopus var. parvisporigerum | a fungus | 8 | 2010 |
| fungus | Entoloma poliopus var. poliopus | a basidiomycete fungus | 21 | 2013 |
| fungus | Entoloma politoflavipes | a fungus | 1 | 2001 |
| fungus | Entoloma politum | a basidiomycete fungus | 10 | 2009 |
| fungus | Entoloma porphyrophaeum | a basidiomycete fungus | 21 | 2010 |
| fungus | Entoloma prunuloides | a basidiomycete fungus | 78 | 2015 |
| fungus | Entoloma pseudoturci | a fungus | 3 | 2011 |
| fungus | Entoloma queletii | a basidiomycete fungus | 2 | 1997 |
| fungus | Entoloma rhodopolium | a basidiomycete fungus | 50 | 2020 |
| fungus | Entoloma rhombisporum var. floccipes | a fungus | 2 | 2009 |
| fungus | Entoloma rhombisporum var. rhombisporum | a basidiomycete fungus | 8 | 2014 |
| fungus | Entoloma roseum | a basidiomycete fungus | 2 | 2000 |
| fungus | Entoloma saundersii | a basidiomycete fungus | 1 | 1995 |
| fungus | Entoloma sericatum | a basidiomycete fungus | 7 | 2020 |
| fungus | Entoloma sericellum | a basidiomycete fungus | 52 | 2015 |
| fungus | Entoloma sericeoides | a basidiomycete fungus | 1 | 2008 |
| fungus | Entoloma sericeonitens | a basidiomycete fungus | 2 | 2006 |
| fungus | Entoloma sericeum | a fungus | 1 | 2009 |
| fungus | Entoloma sericeum var. cinereo-opacum | a fungus | 1 | 2014 |
| fungus | Entoloma sericeum var. sericeum | Silky Nolanea | 56 | 2010 |
| fungus | Entoloma serrulatum | Blue Edge Pinkgill | 69 | 2015 |
| fungus | Entoloma sinuatum | a basidiomycete fungus | 1 | 1995 |
| fungus | Entoloma sodale | a basidiomycete fungus | 14 | 2010 |
| fungus | Entoloma solstitiale | a basidiomycete fungus | 6 | 2010 |
| fungus | Entoloma sordidulum | a basidiomycete fungus | 10 | 2013 |
| fungus | Entoloma subradiatum | a basidiomycete fungus | 8 | 2001 |
| fungus | Entoloma tenellum | a fungus | 2 | 2008 |
| fungus | Entoloma testaceum | a basidiomycete fungus | 1 | 2014 |
| fungus | Entoloma tjallingiorum | a basidiomycete fungus | 3 | 2014 |
| fungus | Entoloma transvenosum | a basidiomycete fungus | 1 | 2010 |
| fungus | Entoloma turci | a basidiomycete fungus | 8 | 2014 |
| fungus | Entoloma undatum | a basidiomycete fungus | 5 | 2008 |
| fungus | Entoloma vernum | a basidiomycete fungus | 14 | 2014 |
| fungus | Entomophthora muscae | a zygomycete fungus | 2 | 2023 |
| fungus | Entyloma ficariae | a rust | 2 | 2023 |
| fungus | Eopyrenula grandicula | a fungus | 2 | 2005 |
| fungus | Epichloe typhina | Choke | 4 | 2020 |
| fungus | Eriopezia caesia | a fungus | 1 | 2010 |
| fungus | Erysiphe adunca var. adunca | a conidial powdery mildew | 9 | 2011 |
| fungus | Erysiphe alphitoides | Oak Mildew | 38 | 2023 |
| fungus | Erysiphe aquilegiae var. ranunculi | a conidial powdery mildew | 8 | 2013 |
| fungus | Erysiphe circaeae | a conidial powdery mildew | 12 | 2014 |
| fungus | Erysiphe convolvuli | a conidial powdery mildew | 1 | 2014 |
| fungus | Erysiphe cruciferarum | a conidial powdery mildew | 5 | 2009 |
| fungus | Erysiphe euonymi | a conidial powdery mildew | 1 | 2011 |
| fungus | Erysiphe flexuosa | a fungus | 1 | 2008 |
| fungus | Erysiphe hedwigii | a fungus | 2 | 2008 |
| fungus | Erysiphe heraclei | a conidial powdery mildew | 29 | 2022 |
| fungus | Erysiphe hyperici | a fungus | 3 | 2009 |
| fungus | Erysiphe knautiae | a conidial powdery mildew | 1 | 2013 |
| fungus | Erysiphe lonicerae | a conidial powdery mildew | 1 | 2013 |
| fungus | Erysiphe pisi | a fungus | 2 | 2022 |
| fungus | Erysiphe polygoni | a conidial powdery mildew | 4 | 2009 |
| fungus | Erysiphe tortilis | a conidial powdery mildew | 1 | 2009 |
| fungus | Erysiphe trifolii | a conidial powdery mildew | 4 | 2009 |
| fungus | Erysiphe trifolii var. trifolii | a conidial powdery mildew | 15 | 2013 |
| fungus | Erysiphe ulmariae | a conidial powdery mildew | 4 | 2011 |
| fungus | Erysiphe urticae | a conidial powdery mildew | 1 | 2009 |
| fungus | Erythricium aurantiacum | a fungus | 4 | 2020 |
| fungus | Eutypa lata | an ascomycete fungus | 14 | 2006 |
| fungus | Eutypa maura | an ascomycete fungus | 15 | 2010 |
| fungus | Eutypa spinosa | an ascomycete fungus | 4 | 2014 |
| fungus | Eutypella acericola | an ascomycete fungus | 7 | 2010 |
| fungus | Eutypella leprosa | an ascomycete fungus | 7 | 2010 |
| fungus | Eutypella prunastri | an ascomycete fungus | 8 | 2000 |
| fungus | Eutypella scoparia | an ascomycete fungus | 4 | 2010 |
| fungus | Exidia | an Exidia species (unidentified) | 1 | 2001 |
| fungus | Exidia albida | a basidiomycete fungus | 9 | 2009 |
| fungus | Exidia glandulosa | Witches' Butter | 62 | 2018 |
| fungus | Exidia nucleata | Crystal Brain | 44 | 2023 |
| fungus | Exidia plana | a fungus | 3 | 2016 |
| fungus | Exidia thuretiana | White Brain | 65 | 2023 |
| fungus | Exidiopsis calcea | a basidiomycete fungus | 1 | 2008 |
| leech, flatworm or ribbon worm | Erpobdella | an Erpobdella leech (unidentified) | 9 | 2019 |
| leech, flatworm or ribbon worm | Erpobdella octoculata | a leech | 138 | 2014 |
| leech, flatworm or ribbon worm | Erpobdella testacea | a leech | 11 | 2020 |
| leech, flatworm or ribbon worm | Erpobdellidae | a Erpobdellidae leech (unidentified) | 20 | 2010 |
| lichen | Enterographa crassa | a lichen | 5 | 2010 |
| lichen | Evernia prunastri | Oak Moss Lichen | 63 | 2023 |
| mammal | Erinaceus europaeus | Hedgehog | 5818 | 2024 |
| mammal - bat | Eptesicus serotinus | Serotine | 837 | 2023 |
| mayfly | Ecdyonurus | a Ecdyonurus mayfly (unidentified) | 7 | 2018 |
| mayfly | Ephemera | an Ephemera mayfly (unidentified) | 5 | 2020 |
| mayfly | Ephemera danica | Green Drake | 43 | 2023 |
| mayfly | Ephemera vulgata | a mayfly | 7 | 2021 |
| mayfly | Ephemerella | a Ephemerella mayfly (unidentified) | 13 | 2003 |
| mayfly | Ephemeridae | an Ephemeridae species (unidentified) | 5 | 2016 |
| mayfly | Ephemeroptera | a mayfly (unidentified) | 130 | 2023 |
| mollusc | Ecrobia ventrosa | Spire Snail | 4 | 2009 |
| mollusc | Emarginula fissura | Slit Limpet | 1 | 1996 |
| mollusc | Ena montana | Mountain Bulin | 16 | 2011 |
| mollusc | Euconulus (Euconulus) alderi | a Tawny Glass Snail | 1 | 1995 |
| mollusc | Euconulus fulvus agg. | a Tawny Glass Snail | 10 | 2018 |
| mollusc | Euconulus fulvus seg. | Tawny Glass Snail | 1 | 2004 |
| mollusc | Euglesa milium | a pea mussel | 6 | 2011 |
| mollusc | Euglesa nitida | a pea mussel | 4 | 2002 |
| mollusc | Euglesa obtusalis | a pea mussel | 6 | 2012 |
| mollusc | Euglesa personata | a pea mussel | 4 | 2012 |
| mollusc | Euglesa pseudosphaerium | a pea mussel | 3 | 1993 |
| mollusc | Euglesa subtruncata | a pea mussel | 1 | 1993 |
| moss | Encalypta streptocarpa | Spiral Extinguisher-moss | 27 | 2023 |
| moss | Encalypta vulgaris | Common Extinguisher-moss | 8 | 2023 |
| moss | Entodon concinnus | Montagne's Cylinder-moss | 3 | 2016 |
| moss | Entosthodon muhlenbergii | Muhlenberg's Cord-moss | 2 | 2023 |
| moss | Entosthodon pulchellus | Pretty Cord-moss | 3 | 2023 |
| moss | Ephemerum recurvifolium | Strap-leaved Earth-moss | 1 | 1990 |
| moss | Ephemerum serratum (sens. str.) | a serrated earth-moss | 3 | 2021 |
| moss | Eucladium verticillatum | Whorled Tufa-moss | 13 | 2023 |
| moss | Eurhynchium | an Eurhynchium species (unidentified) | 3 | 2010 |
| moss | Eurhynchium striatum | Common Striated Feather-moss | 88 | 2023 |
| moth or butterfly - butterfly | Erynnis tages | Dingy Skipper | 1071 | 2022 |
| moth or butterfly - butterfly | Erynnis tages tages | a dingy skipper | 85 | 2005 |
| moth or butterfly - butterfly | Euphydryas aurinia | Marsh Fritillary | 138 | 2021 |
| moth or butterfly - macro moth | Earias | an Earias noctuid moth (unidentified) | 1 | 2003 |
| moth or butterfly - macro moth | Earias clorana | Cream-bordered Green Pea | 3 | 2019 |
| moth or butterfly - macro moth | Earias insulana | Egyptian Bollworm | 1 | 2001 |
| moth or butterfly - macro moth | Earophila badiata | Shoulder Stripe | 262 | 2023 |
| moth or butterfly - macro moth | Ecliptopera silaceata | Small Phoenix | 708 | 2022 |
| moth or butterfly - macro moth | Ectropis | an engrailed moth (unidentified) | 2 | 2022 |
| moth or butterfly - macro moth | Ectropis crepuscularia | Engrailed | 436 | 2022 |
| moth or butterfly - macro moth | Ectropis sp. | Small Engrailed | 62 | 2018 |
| moth or butterfly - macro moth | Egira conspicillaris | Silver Cloud | 1 | 1964 |
| moth or butterfly - macro moth | Eilema caniola | Hoary Footman | 12 | 2022 |
| moth or butterfly - macro moth | Eilema complana | Scarce Footman | 708 | 2023 |
| moth or butterfly - macro moth | Eilema depressa | Buff Footman | 366 | 2022 |
| moth or butterfly - macro moth | Eilema griseola | Dingy Footman | 1571 | 2023 |
| moth or butterfly - macro moth | Eilema griseola ab. stramineola | Dingy Footman (pale form) | 11 | 2013 |
| moth or butterfly - macro moth | Eilema lurideola | Common Footman | 2393 | 2023 |
| moth or butterfly - macro moth | Eilema sororcula | Orange Footman | 339 | 2023 |
| moth or butterfly - macro moth | Electrophaes corylata | Broken-barred Carpet | 274 | 2022 |
| moth or butterfly - macro moth | Ematurga atomaria | Common Heath | 29 | 2014 |
| moth or butterfly - macro moth | Enargia paleacea | Angle-striped Sallow | 5 | 1994 |
| moth or butterfly - macro moth | Endromis versicolora | Kentish Glory | 2 | 1908 |
| moth or butterfly - macro moth | Ennomos alniaria | Canary-shouldered Thorn | 700 | 2023 |
| moth or butterfly - macro moth | Ennomos autumnaria | Large Thorn | 1 | 1995 |
| moth or butterfly - macro moth | Ennomos erosaria | September Thorn | 203 | 2023 |
| moth or butterfly - macro moth | Ennomos fuscantaria | Dusky Thorn | 1297 | 2023 |
| moth or butterfly - macro moth | Ennomos quercinaria | August Thorn | 238 | 2023 |
| moth or butterfly - macro moth | Entephria caesiata | Grey Mountain Moth | 2 | 1961 |
| moth or butterfly - macro moth | Epione repandaria | Bordered Beauty | 105 | 2022 |
| moth or butterfly - macro moth | Epirrhoe | an Epirrhoe species (unidentified) | 1 | 2013 |
| moth or butterfly - macro moth | Epirrhoe alternata | Common Carpet | 2023 | 2023 |
| moth or butterfly - macro moth | Epirrhoe alternata alternata | a Common Carpet | 1 | 2010 |
| moth or butterfly - macro moth | Epirrhoe galiata | Galium Carpet | 30 | 2020 |
| moth or butterfly - macro moth | Epirrhoe rivata | Wood Carpet | 30 | 2022 |
| moth or butterfly - macro moth | Epirrhoe tristata | Small Argent & Sable | 3 | 2013 |
| moth or butterfly - macro moth | Epirrita | a november or autumnal moth (unidentified) | 248 | 2023 |
| moth or butterfly - macro moth | Epirrita autumnata | Autumnal Moth | 18 | 2021 |
| moth or butterfly - macro moth | Epirrita christyi | Pale November Moth | 19 | 2022 |
| moth or butterfly - macro moth | Epirrita dilutata | November Moth | 205 | 2023 |
| moth or butterfly - macro moth | Epirrita dilutata agg. | November Moth agg. | 66 | 2022 |
| moth or butterfly - macro moth | Erannis defoliaria | Mottled Umber | 194 | 2023 |
| moth or butterfly - macro moth | Eremobia ochroleuca | Dusky Sallow | 311 | 2023 |
| moth or butterfly - macro moth | Eriogaster lanestris | Small Eggar | 77 | 2020 |
| moth or butterfly - macro moth | Eublemma parva | Small Marbled | 12 | 2019 |
| moth or butterfly - macro moth | Euchoeca nebulata | Dingy Shell | 52 | 2022 |
| moth or butterfly - macro moth | Euclidia glyphica | Burnet Companion | 452 | 2023 |
| moth or butterfly - macro moth | Euclidia mi | Mother Shipton | 177 | 2023 |
| moth or butterfly - macro moth | Eugnorisma depuncta | Plain Clay | 1 | 2019 |
| moth or butterfly - macro moth | Eugnorisma glareosa | Autumnal Rustic | 43 | 2022 |
| moth or butterfly - macro moth | Eulithis mellinata | Spinach (moth) | 81 | 2023 |
| moth or butterfly - macro moth | Eulithis populata | Northern Spinach | 1 | 2014 |
| moth or butterfly - macro moth | Eulithis prunata | Phoenix | 494 | 2023 |
| moth or butterfly - macro moth | Eulithis testata | Chevron | 12 | 2014 |
| moth or butterfly - macro moth | Euphyia biangulata | Cloaked Carpet | 4 | 2021 |
| moth or butterfly - macro moth | Euphyia unangulata | Sharp-angled Carpet | 24 | 2014 |
| moth or butterfly - macro moth | Eupithecia | a Eupithecia pug (unidentified) | 98 | 2023 |
| moth or butterfly - macro moth | Eupithecia abbreviata | Brindled Pug | 521 | 2023 |
| moth or butterfly - macro moth | Eupithecia abietaria | Cloaked Pug | 2 | 1970 |
| moth or butterfly - macro moth | Eupithecia absinthiata | Wormwood Pug | 387 | 2023 |
| moth or butterfly - macro moth | Eupithecia absinthiata form goossensiata | Ling Pug | 2 | 1991 |
| moth or butterfly - macro moth | Eupithecia assimilata | Currant Pug | 328 | 2022 |
| moth or butterfly - macro moth | Eupithecia centaureata | Lime-speck Pug | 1383 | 2023 |
| moth or butterfly - macro moth | Eupithecia distinctaria subsp. constrictata | Thyme Pug | 2 | 1958 |
| moth or butterfly - macro moth | Eupithecia dodoneata | Oak-tree Pug | 222 | 2023 |
| moth or butterfly - macro moth | Eupithecia egenaria | Pauper Pug | 12 | 2019 |
| moth or butterfly - macro moth | Eupithecia exiguata | Mottled Pug | 348 | 2023 |
| moth or butterfly - macro moth | Eupithecia exiguata subsp. exiguata | a Mottled Pug | 151 | 2014 |
| moth or butterfly - macro moth | Eupithecia expallidata | Bleached Pug | 9 | 2010 |
| moth or butterfly - macro moth | Eupithecia haworthiata | Haworth's Pug | 357 | 2023 |
| moth or butterfly - macro moth | Eupithecia icterata | Tawny-speckled Pug | 132 | 2023 |
| moth or butterfly - macro moth | Eupithecia icterata subsp. subfulvata | a Tawny-speckled Pug | 1 | 2010 |
| moth or butterfly - macro moth | Eupithecia indigata | Ochreous Pug | 21 | 2021 |
| moth or butterfly - macro moth | Eupithecia innotata | Angle-barred Pug | 7 | 2021 |
| moth or butterfly - macro moth | Eupithecia innotata form fraxinata | Ash Pug | 44 | 2023 |
| moth or butterfly - macro moth | Eupithecia insigniata | Pinion-spotted Pug | 4 | 2004 |
| moth or butterfly - macro moth | Eupithecia intricata | a moth | 38 | 2022 |
| moth or butterfly - macro moth | Eupithecia intricata subsp. arceuthata | Freyer's Pug | 347 | 2023 |
| moth or butterfly - macro moth | Eupithecia inturbata | Maple Pug | 142 | 2023 |
| moth or butterfly - macro moth | Eupithecia irriguata | Marbled Pug | 1 | 1994 |
| moth or butterfly - macro moth | Eupithecia lariciata | Larch Pug | 48 | 2021 |
| moth or butterfly - macro moth | Eupithecia linariata | Toadflax Pug | 98 | 2022 |
| moth or butterfly - macro moth | Eupithecia nanata | Narrow-winged Pug | 48 | 2021 |
| moth or butterfly - macro moth | Eupithecia phoeniceata | Cypress Pug | 780 | 2023 |
| moth or butterfly - macro moth | Eupithecia pimpinellata | Pimpinel Pug | 3 | 1991 |
| moth or butterfly - macro moth | Eupithecia plumbeolata | Lead-coloured Pug | 1 | 1968 |
| moth or butterfly - macro moth | Eupithecia pulchellata | Foxglove Pug | 193 | 2023 |
| moth or butterfly - macro moth | Eupithecia pulchellata subsp. pulchellata | a Foxglove Pug | 4 | 2013 |
| moth or butterfly - macro moth | Eupithecia pusillata subsp. pusillata | Juniper Pug | 21 | 2018 |
| moth or butterfly - macro moth | Eupithecia pygmaeata | Marsh Pug | 2 | 2013 |
| moth or butterfly - macro moth | Eupithecia satyrata | a moth | 1 | 2001 |
| moth or butterfly - macro moth | Eupithecia satyrata satyrata | Satyr Pug | 15 | 2020 |
| moth or butterfly - macro moth | Eupithecia simpliciata | Plain Pug | 66 | 2022 |
| moth or butterfly - macro moth | Eupithecia subfuscata | Grey Pug | 370 | 2023 |
| moth or butterfly - macro moth | Eupithecia subumbrata | Shaded Pug | 8 | 2022 |
| moth or butterfly - macro moth | Eupithecia succenturiata | Bordered Pug | 30 | 2015 |
| moth or butterfly - macro moth | Eupithecia tantillaria | Dwarf Pug | 46 | 2021 |
| moth or butterfly - macro moth | Eupithecia tenuiata | Slender Pug | 68 | 2022 |
| moth or butterfly - macro moth | Eupithecia tripunctaria | White-spotted Pug | 542 | 2023 |
| moth or butterfly - macro moth | Eupithecia trisignaria | Triple-spotted Pug | 11 | 2020 |
| moth or butterfly - macro moth | Eupithecia valerianata | Valerian Pug | 10 | 2022 |
| moth or butterfly - macro moth | Eupithecia venosata | a moth | 4 | 2022 |
| moth or butterfly - macro moth | Eupithecia venosata venosata | Netted Pug | 27 | 2015 |
| moth or butterfly - macro moth | Eupithecia virgaureata | Golden-rod Pug | 7 | 2016 |
| moth or butterfly - macro moth | Eupithecia vulgata | Common Pug | 1694 | 2023 |
| moth or butterfly - macro moth | Eupithecia vulgata subsp. vulgata | a Common Pug | 5 | 2014 |
| moth or butterfly - macro moth | Euplagia quadripunctaria | Jersey Tiger | 479 | 2023 |
| moth or butterfly - macro moth | Euplexia lucipara | Small Angle Shades | 448 | 2022 |
| moth or butterfly - macro moth | Euproctis chrysorrhoea | Brown-tail | 64 | 2023 |
| moth or butterfly - macro moth | Euproctis similis | Yellow-tail | 809 | 2023 |
| moth or butterfly - macro moth | Eupsilia transversa | Satellite | 258 | 2022 |
| moth or butterfly - macro moth | Eurois occulta | Great Brocade | 8 | 2007 |
| moth or butterfly - macro moth | Euthrix potatoria | Drinker | 777 | 2023 |
| moth or butterfly - macro moth | Euxoa cursoria | Coast Dart | 5 | 2007 |
| moth or butterfly - macro moth | Euxoa nigricans | Garden Dart | 87 | 2018 |
| moth or butterfly - macro moth | Euxoa obelisca | Square-spot Dart | 3 | 2014 |
| moth or butterfly - macro moth | Euxoa tritici | Small White-line Dart | 37 | 2020 |
| moth or butterfly - micro moth | Eana incanana | a tortrix moth | 9 | 2016 |
| moth or butterfly - micro moth | Eana osseana | a tortrix moth | 1 | 2009 |
| moth or butterfly - micro moth | Ectoedemia | an Ectoedemia species (unidentified) | 2 | 2011 |
| moth or butterfly - micro moth | Ectoedemia albifasciella | a micro-moth | 24 | 2020 |
| moth or butterfly - micro moth | Ectoedemia angulifasciella | a micro-moth | 17 | 2021 |
| moth or butterfly - micro moth | Ectoedemia arcuatella | a micro-moth | 2 | 1993 |
| moth or butterfly - micro moth | Ectoedemia argyropeza | a micro-moth | 7 | 2020 |
| moth or butterfly - micro moth | Ectoedemia atricollis | a micro-moth | 25 | 2022 |
| moth or butterfly - micro moth | Ectoedemia atrifrontella | a micro-moth | 2 | 2011 |
| moth or butterfly - micro moth | Ectoedemia decentella | a micro-moth | 16 | 2022 |
| moth or butterfly - micro moth | Ectoedemia heringella | a moth | 39 | 2023 |
| moth or butterfly - micro moth | Ectoedemia heringi | a micro-moth | 16 | 2023 |
| moth or butterfly - micro moth | Ectoedemia intimella | a micro-moth | 6 | 2020 |
| moth or butterfly - micro moth | Ectoedemia louisella | a micro-moth | 9 | 2022 |
| moth or butterfly - micro moth | Ectoedemia occultella | a micro-moth | 12 | 2022 |
| moth or butterfly - micro moth | Ectoedemia quinquella | a micro-moth | 5 | 2018 |
| moth or butterfly - micro moth | Ectoedemia rubivora | a micro-moth | 8 | 2019 |
| moth or butterfly - micro moth | Ectoedemia septembrella | a micro-moth | 24 | 2023 |
| moth or butterfly - micro moth | Ectoedemia sericopeza | a micro-moth | 9 | 2020 |
| moth or butterfly - micro moth | Ectoedemia spinosella | a micro-moth | 3 | 2018 |
| moth or butterfly - micro moth | Ectoedemia subbimaculella | a micro-moth | 34 | 2022 |
| moth or butterfly - micro moth | Eidophasia messingiella | a micro-moth | 10 | 2021 |
| moth or butterfly - micro moth | Elachista adscitella | a micro-moth | 1 | 2011 |
| moth or butterfly - micro moth | Elachista albifrontella | a micro-moth | 7 | 2021 |
| moth or butterfly - micro moth | Elachista argentella | a micro-moth | 48 | 2023 |
| moth or butterfly - micro moth | Elachista atricomella | a micro-moth | 65 | 2022 |
| moth or butterfly - micro moth | Elachista bisulcella | a micro-moth | 3 | 2015 |
| moth or butterfly - micro moth | Elachista canapennella | Little Dwarf | 74 | 2023 |
| moth or butterfly - micro moth | Elachista cinereopunctella | a micro-moth | 1 | 2003 |
| moth or butterfly - micro moth | Elachista consortella | a micro-moth | 1 | 2019 |
| moth or butterfly - micro moth | Elachista freyerella | a micro-moth | 11 | 2020 |
| moth or butterfly - micro moth | Elachista gangabella | a micro-moth | 3 | 2019 |
| moth or butterfly - micro moth | Elachista gleichenella | a micro-moth | 5 | 2020 |
| moth or butterfly - micro moth | Elachista humilis | a micro-moth | 4 | 2017 |
| moth or butterfly - micro moth | Elachista luticomella | a micro-moth | 4 | 2010 |
| moth or butterfly - micro moth | Elachista maculicerusella | Triple-spot Dwarf | 20 | 2022 |
| moth or butterfly - micro moth | Elachista obliquella | a micro-moth | 2 | 2019 |
| moth or butterfly - micro moth | Elachista regificella | a micro-moth | 3 | 2018 |
| moth or butterfly - micro moth | Elachista rufocinerea | a micro-moth | 18 | 2023 |
| moth or butterfly - micro moth | Elachista scirpi | a micro-moth | 1 | 2013 |
| moth or butterfly - micro moth | Elachista sp. or Cosmiotes sp. (unidentified) | a Elachista or a Cosmiotes micro-moth (unidentified) | 1 | 2006 |
| moth or butterfly - micro moth | Elachista stabilella | a micro-moth | 4 | 2022 |
| moth or butterfly - micro moth | Elachista subnigrella | a micro-moth | 2 | 2008 |
| moth or butterfly - micro moth | Elachista subocellea | a micro-moth | 2 | 2012 |
| moth or butterfly - micro moth | Elachista triatomea | a micro-moth | 1 | 2003 |
| moth or butterfly - micro moth | Elachista triseriatella | a micro-moth | 2 | 2003 |
| moth or butterfly - micro moth | Elegia similella | a pyralid moth | 3 | 2014 |
| moth or butterfly - micro moth | Elophila difflualis | a pyralid moth | 1 | 1989 |
| moth or butterfly - micro moth | Elophila nymphaeata | Brown China-mark | 111 | 2023 |
| moth or butterfly - micro moth | Emmelina | an Emmelina species (unidentified) | 1 | 2018 |
| moth or butterfly - micro moth | Emmelina monodactyla | Common Plume | 2393 | 2023 |
| moth or butterfly - micro moth | Enarmonia formosana | Cherry Bark Moth | 46 | 2023 |
| moth or butterfly - micro moth | Endothenia | an Endothenia species (unidentified) | 3 | 2019 |
| moth or butterfly - micro moth | Endothenia gentianaeana | a tortrix moth | 91 | 2022 |
| moth or butterfly - micro moth | Endothenia marginana | Bordered Marble | 73 | 2023 |
| moth or butterfly - micro moth | Endothenia nigricostana | a tortrix moth | 3 | 2021 |
| moth or butterfly - micro moth | Endothenia oblongana | a tortrix moth | 3 | 2023 |
| moth or butterfly - micro moth | Endothenia pullana | a tortrix moth | 1 | 2019 |
| moth or butterfly - micro moth | Endothenia quadrimaculana | a tortrix moth | 2 | 2019 |
| moth or butterfly - micro moth | Endothenia ustulana | a tortrix moth | 7 | 2020 |
| moth or butterfly - micro moth | Endotricha flammealis | a pyralid moth | 1054 | 2023 |
| moth or butterfly - micro moth | Endrosis sarcitrella | White-shouldered House Moth | 1103 | 2023 |
| moth or butterfly - micro moth | Epagoge grotiana | a tortrix moth | 11 | 2022 |
| moth or butterfly - micro moth | Epermenia chaerophyllella | a micro-moth | 52 | 2023 |
| moth or butterfly - micro moth | Epermenia falciformis | a micro-moth | 26 | 2021 |
| moth or butterfly - micro moth | Ephestia | an Ephestia species (unidentified) | 26 | 2021 |
| moth or butterfly - micro moth | Ephestia elutella | Cacao Moth | 23 | 2022 |
| moth or butterfly - micro moth | Ephestia kuehniella | Mediterranean Flour Moth | 9 | 2022 |
| moth or butterfly - micro moth | Ephestia woodiella | False Cacao Moth | 168 | 2023 |
| moth or butterfly - micro moth | Epiblema | an Epiblema species (unidentified) | 9 | 2020 |
| moth or butterfly - micro moth | Epiblema cirsiana | a tortrix moth | 36 | 2022 |
| moth or butterfly - micro moth | Epiblema cnicicolana | a tortrix moth | 1 | 2001 |
| moth or butterfly - micro moth | Epiblema costipunctana | a tortrix moth | 23 | 2020 |
| moth or butterfly - micro moth | Epiblema foenella | a tortrix moth | 23 | 2021 |
| moth or butterfly - micro moth | Epiblema scutulana | a tortrix moth | 50 | 2023 |
| moth or butterfly - micro moth | Epiblema sticticana | a tortrix moth | 9 | 2004 |
| moth or butterfly - micro moth | Epichnopterix plumella | a bagworm moth | 1 | 1906 |
| moth or butterfly - micro moth | Epinotia | an Epinotia species (unidentified) | 1 | 2011 |
| moth or butterfly - micro moth | Epinotia abbreviana | a tortrix moth | 24 | 2023 |
| moth or butterfly - micro moth | Epinotia bilunana | a tortrix moth | 96 | 2022 |
| moth or butterfly - micro moth | Epinotia brunnichana | Large Birch Bell | 14 | 2021 |
| moth or butterfly - micro moth | Epinotia caprana | a tortrix moth | 2 | 2001 |
| moth or butterfly - micro moth | Epinotia cruciana | Willow Tortrix | 2 | 1999 |
| moth or butterfly - micro moth | Epinotia immundana | Common Birch Bell | 69 | 2022 |
| moth or butterfly - micro moth | Epinotia nanana | a tortrix moth | 13 | 2022 |
| moth or butterfly - micro moth | Epinotia nisella | Grey Poplar Bell | 61 | 2021 |
| moth or butterfly - micro moth | Epinotia nisella form cinereana | Grey Aspen Bell | 1 | 2020 |
| moth or butterfly - micro moth | Epinotia pygmaeana | a tortrix moth | 2 | 2010 |
| moth or butterfly - micro moth | Epinotia ramella | a tortrix moth | 15 | 2021 |
| moth or butterfly - micro moth | Epinotia signatana | a tortrix moth | 8 | 2022 |
| moth or butterfly - micro moth | Epinotia solandriana | a tortrix moth | 7 | 2014 |
| moth or butterfly - micro moth | Epinotia subocellana | a tortrix moth | 5 | 2017 |
| moth or butterfly - micro moth | Epinotia subsequana | a tortrix moth | 1 | 2007 |
| moth or butterfly - micro moth | Epinotia tedella | a tortrix moth | 4 | 2022 |
| moth or butterfly - micro moth | Epinotia tenerana | Nut Bud Moth | 63 | 2022 |
| moth or butterfly - micro moth | Epinotia tetraquetrana | a tortrix moth | 9 | 2020 |
| moth or butterfly - micro moth | Epinotia trigonella | a tortrix moth | 3 | 2015 |
| moth or butterfly - micro moth | Epiphyas postvittana | Light Brown Apple Moth | 6277 | 2023 |
| moth or butterfly - micro moth | Eriocrania salopiella | a micro-moth | 3 | 2014 |
| moth or butterfly - micro moth | Eriocrania sangii | a micro-moth | 3 | 2011 |
| moth or butterfly - micro moth | Eriocrania semipurpurella | a micro-moth | 7 | 2021 |
| moth or butterfly - micro moth | Eriocrania sparrmannella | Mottled Purple | 3 | 1963 |
| moth or butterfly - micro moth | Eriocrania unimaculella | a micro-moth | 5 | 2007 |
| moth or butterfly - micro moth | Esperia sulphurella | a micro-moth | 142 | 2023 |
| moth or butterfly - micro moth | Ethmia dodecea | a micro-moth | 22 | 2022 |
| moth or butterfly - micro moth | Eucosma | an Eucosma species (unidentified) | 2 | 2022 |
| moth or butterfly - micro moth | Eucosma aspidiscana | a tortrix moth | 4 | 2022 |
| moth or butterfly - micro moth | Eucosma campoliliana | Marbled Bell | 108 | 2023 |
| moth or butterfly - micro moth | Eucosma cana | Hoary Belle | 416 | 2023 |
| moth or butterfly - micro moth | Eucosma fulvana | a tortrix moth | 34 | 2023 |
| moth or butterfly - micro moth | Eucosma hohenwartiana | a moth | 34 | 2022 |
| moth or butterfly - micro moth | Eucosma obumbratana | a tortrix moth | 12 | 2021 |
| moth or butterfly - micro moth | Eucosma tripoliana | a tortrix moth | 13 | 2021 |
| moth or butterfly - micro moth | Eucosmomorpha albersana | a tortrix moth | 1 | 1993 |
| moth or butterfly - micro moth | Eudemis porphyrana | a tortrix moth | 1 | 2015 |
| moth or butterfly - micro moth | Eudemis profundana | a tortrix moth | 13 | 2018 |
| moth or butterfly - micro moth | Eudonia | an Eudonia species (unidentified) | 2 | 2020 |
| moth or butterfly - micro moth | Eudonia angustea | a pyralid moth | 984 | 2023 |
| moth or butterfly - micro moth | Eudonia delunella | a pyralid moth | 2 | 2021 |
| moth or butterfly - micro moth | Eudonia lacustrata | a pyralid moth | 1179 | 2023 |
| moth or butterfly - micro moth | Eudonia lineola | a pyralid moth | 6 | 2017 |
| moth or butterfly - micro moth | Eudonia mercurella | Small Grey | 767 | 2023 |
| moth or butterfly - micro moth | Eudonia murana | a pyralid moth | 1 | 1992 |
| moth or butterfly - micro moth | Eudonia pallida | a pyralid moth | 144 | 2022 |
| moth or butterfly - micro moth | Eudonia truncicolella | Ground-moss Grey | 24 | 2022 |
| moth or butterfly - micro moth | Eulia ministrana | a tortrix moth | 27 | 2023 |
| moth or butterfly - micro moth | Eupoecilia angustana | Marbled Conch | 28 | 2023 |
| moth or butterfly - micro moth | Euspilapteryx auroguttella | a micro-moth | 21 | 2021 |
| moth or butterfly - micro moth | Euzophera cinerosella | a pyralid moth | 1 | 1994 |
| moth or butterfly - micro moth | Euzophera pinguis | a pyralid moth | 488 | 2023 |
| moth or butterfly - micro moth | Evergestis forficalis | Garden Pebble | 1388 | 2023 |
| moth or butterfly - micro moth | Evergestis pallidata | a pyralid moth | 127 | 2022 |
| moth or butterfly - micro moth | Exaeretia allisella | a micro-moth | 1 | 1999 |
| moth or butterfly - micro moth | Exoteleia dodecella | a micro-moth | 2 | 2018 |
| plant | Echeveria derenbergii | a flowering plant | 2 | 2021 |
| plant | Echinaria capitata | a flowering plant | 1 | 1937 |
| plant | Echinochloa colona | Shama Millet | 5 | 2016 |
| plant | Echinochloa crus-galli | Cockspur | 92 | 2022 |
| plant | Echinochloa crus-pavonis | a flowering plant | 1 | 1930 |
| plant | Echinochloa esculenta | Japanese Millet | 6 | 2020 |
| plant | Echinochloa frumentacea | White Millet | 1 | 2010 |
| plant | Echinops sphaerocephalus | Glandular Globe-thistle | 7 | 2005 |
| plant | Echium pininana | Giant Viper's-bugloss | 2 | 2023 |
| plant | Echium plantagineum | Purple Viper's-bugloss | 4 | 2017 |
| plant | Echium vulgare | Viper's Bugloss (plant) | 119 | 2020 |
| plant | Ehretia | an ehretia (unidentified) | 1 | 2015 |
| plant | Elaeagnaceae | an Elaeagnaceae species (unidentified) | 1 | 2019 |
| plant | Elaeagnus angustifolia | Oleaster | 7 | 2000 |
| plant | Elaeagnus umbellata | Elaeagnus | 3 | 2014 |
| plant | Eleocharis | a spike-rush (unidentified) | 1 | 2008 |
| plant | Eleocharis palustris | Common Spike-rush | 529 | 2023 |
| plant | Eleocharis palustris subsp. vulgaris | a common spike-rush | 1 | 1988 |
| plant | Eleocharis uniglumis | Slender Spike-rush | 22 | 2013 |
| plant | Eleogiton fluitans | Floating Club-rush | 42 | 2012 |
| plant | Eleusine coracana | a flowering plant | 1 | 1930 |
| plant | Eleusine indica | Yard-grass | 2 | 1959 |
| plant | Elodea | a waterweed (unidentified) | 47 | 2008 |
| plant | Elodea callitrichoides | South-American Water-weed | 3 | 1995 |
| plant | Elodea canadensis | Canadian Waterweed | 418 | 2019 |
| plant | Elodea nuttallii | Nuttall's Water-weed | 335 | 2019 |
| plant | Elsholtzia ciliata | a flowering plant | 1 | 1930 |
| plant | Elymus | an Elymus couch (unidentified) | 2 | 2015 |
| plant | Elymus canadensis | a couch | 1 | 1922 |
| plant | Elymus caninus | Bearded Couch | 474 | 2019 |
| plant | Elymus caninus var. caninus | a bearded couch | 2 | 1988 |
| plant | Elymus trachycaulus | a flowering plant | 3 | 1930 |
| plant | Elytrigia | an Elytrigia species (unidentified) | 1 | 2012 |
| plant | Elytrigia atherica | Sea Couch | 371 | 2022 |
| plant | Elytrigia juncea | Sand Couch | 30 | 2019 |
| plant | Elytrigia repens | Common Couch | 2174 | 2023 |
| plant | Elytrigia repens subsp. repens | a common couch | 25 | 2016 |
| plant | Elytrigia repens subsp. repens var. aristata | a flowering plant | 23 | 2016 |
| plant | Elytrigia repens x atherica = E. x drucei | a couch | 2 | 2008 |
| plant | Elytrigia repens x Hordeum secalinum = X Elytrordeum langei | a grass | 12 | 2011 |
| plant | Entada gigas | Nicker Bean | 1 | 1982 |
| plant | Epilobium | a willowherb (unidentified) | 332 | 2023 |
| plant | Epilobium brunnescens | New Zealand Willowherb | 3 | 2013 |
| plant | Epilobium ciliatum | American Willowherb | 570 | 2023 |
| plant | Epilobium hirsutum | Great Willowherb | 5026 | 2023 |
| plant | Epilobium hirsutum x parviflorum = E. x subhirsutum | a willowherb | 1 | 1926 |
| plant | Epilobium lanceolatum | Spear-leaved Willowherb | 107 | 2016 |
| plant | Epilobium montanum | Broad-leaved Willowherb | 1983 | 2023 |
| plant | Epilobium montanum x ciliatum = E. x interjectum | a willowherb | 2 | 1961 |
| plant | Epilobium obscurum | Short-fruited Willowherb | 149 | 2017 |
| plant | Epilobium palustre | Marsh Willowherb | 81 | 2016 |
| plant | Epilobium palustre x anagallidifolium = E. x dasycarpum | a willowherb | 1 | 2005 |
| plant | Epilobium parviflorum | Hoary Willowherb | 1291 | 2023 |
| plant | Epilobium parviflorum x ciliatum = E. x floridulum | a willowherb | 3 | 1961 |
| plant | Epilobium parviflorum x montanum = E. x limosum | a willowherb | 2 | 1934 |
| plant | Epilobium parviflorum x obscurum = E. x dacicum | a willowherb | 1 | 1941 |
| plant | Epilobium roseum | Pale Willowherb | 51 | 2020 |
| plant | Epilobium tetragonum | Square-stalked Willowherb | 662 | 2023 |
| plant | Epipactis | an Epipactis species (unidentified) | 1 | 2002 |
| plant | Epipactis helleborine | Broad-leaved Helleborine | 145 | 2021 |
| plant | Epipactis leptochila | Narrow-lipped Helleborine | 6 | 2009 |
| plant | Epipactis palustris | Marsh Helleborine | 62 | 2019 |
| plant | Epipactis phyllanthes | Green-flowered Helleborine | 1 | 1987 |
| plant | Epipactis purpurata | Violet Helleborine | 51 | 2017 |
| plant | Epipactis purpurata x helleborine = E. x schulzei | a helleborine | 1 | 2017 |
| plant | Equisetaceae | an Equisetaceae species (unidentified) | 2 | 2005 |
| plant | Equisetum | a horsetail (unidentified) | 147 | 2020 |
| plant | Equisetum arvense | Field Horsetail | 2385 | 2023 |
| plant | Equisetum fluviatile | Water Horsetail | 403 | 2019 |
| plant | Equisetum fluviatile x arvense = E. x litorale | Shore Horsetail | 3 | 2008 |
| plant | Equisetum hyemale | Rough Horsetail | 2 | 1922 |
| plant | Equisetum palustre | Marsh Horsetail | 667 | 2023 |
| plant | Equisetum ramosissimum | Branched Horsetail | 33 | 2019 |
| plant | Equisetum sylvaticum | Wood Horsetail | 9 | 2014 |
| plant | Equisetum telmateia | Great Horsetail | 538 | 2023 |
| plant | Equisetum variegatum | Variegated Horsetail | 2 | 1913 |
| plant | Eragrostis barrelieri | a love-grass | 1 | 1926 |
| plant | Eragrostis cilianensis | Stink-grass | 2 | 1959 |
| plant | Eragrostis minor | Small Love-grass | 1 | 1930 |
| plant | Eragrostis pectinacea | a love-grass | 1 | 1959 |
| plant | Eragrostis pilosa | Jersey Love-grass | 2 | 1926 |
| plant | Eranthis hyemalis | Winter Aconite | 5 | 2023 |
| plant | Eremopoa persica | a flowering plant | 2 | 1939 |
| plant | Eremopyrum bonaepartis | a flowering plant | 1 | 1937 |
| plant | Erica | an Erica species (unidentified) | 1 | 2013 |
| plant | Ericaceae | a heather (unidentified) | 5 | 2015 |
| plant | Erica cinerea | Bell Heather | 80 | 2019 |
| plant | Erica tetralix | Cross-leaved Heath | 7 | 2014 |
| plant | Erigeron acris | Blue Fleabane | 293 | 2021 |
| plant | Erigeron glaucus | Seaside Daisy | 8 | 2019 |
| plant | Erigeron karvinskianus | Mexican Fleabane | 199 | 2023 |
| plant | Erigeron philadelphicus | Robin's-plantain | 9 | 2017 |
| plant | Erinus alpinus | Fairy Foxglove | 13 | 2019 |
| plant | Eriobotrya japonica | Loquat | 6 | 2000 |
| plant | Eriochloa villosa | a flowering plant | 1 | 1930 |
| plant | Eriophorum | an Eriophorum species (unidentified) | 3 | 1999 |
| plant | Eriophorum angustifolium | Common Cottongrass | 19 | 2018 |
| plant | Eriophorum latifolium | Broad-leaved Cottongrass | 17 | 2015 |
| plant | Eriophorum vaginatum | Hare's-tail Cottongrass | 1 | 1986 |
| plant | Erodium | an Erodium species (unidentified) | 4 | 2023 |
| plant | Erodium cicutarium | Common Stork's-bill | 300 | 2023 |
| plant | Erodium cicutarium agg. | Common Stork's-bill agg. | 52 | 2013 |
| plant | Erodium maritimum | Sea Stork's-bill | 44 | 2017 |
| plant | Erodium moschatum | Musk Stork's-bill | 58 | 2023 |
| plant | Erophila glabrescens | Glabrous Whitlowgrass | 8 | 2019 |
| plant | Erophila majuscula | Hairy Whitlowgrass | 2 | 2008 |
| plant | Erophila verna | Common Whitlowgrass | 541 | 2023 |
| plant | Erophila verna (sens.lat.) | Common Whitlowgrass sens. lat. | 1 | 2018 |
| plant | Erucaria hispanica | a flowering plant | 2 | 1951 |
| plant | Erucastrum gallicum | Hairy Rocket | 6 | 1985 |
| plant | Eruca vesicaria | Garden Rocket | 7 | 2019 |
| plant | Eruca vesicaria subsp. sativa | a garden rocket | 1 | 2017 |
| plant | Eryngium | an Eryngium species (unidentified) | 2 | 2004 |
| plant | Eryngium bourgatii | a flowering plant | 1 | 2019 |
| plant | Eryngium campestre | Field Eryngo | 2 | 1990 |
| plant | Eryngium maritimum | Sea Holly | 7 | 2007 |
| plant | Erysimum | an Erysimum species (unidentified) | 2 | 2023 |
| plant | Erysimum cheiranthoides | Treacle Mustard | 55 | 2011 |
| plant | Erysimum cheiri | Wallflower | 192 | 2023 |
| plant | Erysimum repandum | Spreading Treacle-mustard | 3 | 1938 |
| plant | Escallonia | an escallonia (unidentified) | 5 | 2015 |
| plant | Eschscholzia californica | Californian Poppy | 35 | 2023 |
| plant | Eucalyptus | a gum (unidentified) | 6 | 2020 |
| plant | Eucalyptus globulus | Southern Blue-gum | 1 | 2000 |
| plant | Eucalyptus gunnii | Cider Gum | 82 | 2015 |
| plant | Euclidium syriacum | a flowering plant | 2 | 1940 |
| plant | Euonymus | an Euonymus species (unidentified) | 6 | 2015 |
| plant | Euonymus europaeus | Spindle | 3137 | 2023 |
| plant | Euonymus japonicus | Evergreen Spindle | 105 | 2022 |
| plant | Euonymus latifolius | Large-leaved Spindle | 1 | 1932 |
| plant | Eupatorium | an Eupatorium species (unidentified) | 2 | 2023 |
| plant | Eupatorium cannabinum | Hemp-agrimony | 2016 | 2023 |
| plant | Euphorbia | a spurge (unidentified) | 18 | 2023 |
| plant | Euphorbia amygdaloides | Wood Spurge | 359 | 2023 |
| plant | Euphorbia amygdaloides subsp. amygdaloides | a spurge | 428 | 2011 |
| plant | Euphorbia amygdaloides subsp. robbiae | Mrs Robb's bonnet | 4 | 2019 |
| plant | Euphorbia characias | Mediterranean Spurge | 28 | 2023 |
| plant | Euphorbia characias subsp. veneta | a spurge | 12 | 2012 |
| plant | Euphorbia corallioides | Coral Spurge | 2 | 2015 |
| plant | Euphorbia cyparissias | Cypress Spurge | 15 | 2023 |
| plant | Euphorbia dulcis | Sweet Spurge | 5 | 2023 |
| plant | Euphorbia esula | Leafy Spurge | 1 | 1958 |
| plant | Euphorbia esula agg. | a flowering plant | 1 | 1928 |
| plant | Euphorbia esula x waldsteinii = E. x pseudovirgata | Twiggy Spurge | 2 | 1991 |
| plant | Euphorbia exigua | Dwarf Spurge | 189 | 2017 |
| plant | Euphorbia helioscopia | Sun Spurge | 1124 | 2023 |
| plant | Euphorbia lathyris | Caper Spurge | 192 | 2024 |
| plant | Euphorbia maculata | Spotted Spurge | 4 | 2016 |
| plant | Euphorbia myrsinites | a flowering plant | 1 | 2004 |
| plant | Euphorbia oblongata | a flowering plant | 11 | 2023 |
| plant | Euphorbia paralias | Sea Spurge | 32 | 2018 |
| plant | Euphorbia peplus | Petty Spurge | 1693 | 2023 |
| plant | Euphorbia platyphyllos | Broad-leaved Spurge | 70 | 2020 |
| plant | Euphorbia portlandica | Portland Spurge | 2 | 2015 |
| plant | Euphorbia serpens | a flowering plant | 2 | 2008 |
| plant | Euphorbia serrulata | Upright Spurge | 13 | 2012 |
| plant | Euphorbia villosa | Hairy Spurge | 5 | 1919 |
| plant | Euphrasia | A eyebright (unidentified) | 79 | 2022 |
| plant | Euphrasia arctica subsp. borealis | an eyebright | 2 | 1920 |
| plant | Euphrasia confusa | an eyebright | 1 | 1985 |
| plant | Euphrasia nemorosa | an eyebright | 192 | 2015 |
| plant | Euphrasia officinalis agg. | Eyebright | 99 | 2023 |
| plant | Euphrasia officinalis subsp. pratensis | an eyebright | 1 | 1986 |
| plant | Euphrasia pseudokerneri | Chalk Eyebright | 2 | 2015 |
| plant | Euphrasia tetraquetra | an eyebright | 26 | 2015 |
| reptile | Elaphe guttata | Corn Snake | 1 | 2008 |
| reptile | Emys orbicularis | European Pond Terrapin | 4 | 2005 |
| slime mould | Echinostelium brooksii | a slime mould | 1 | 2008 |
| slime mould | Echinostelium corynophorum | a slime mould | 1 | 2008 |
| slime mould | Echinostelium minutum | a slime mould | 2 | 2017 |
| spider | Enoplognatha | an Enoplognatha species (unidentified) | 9 | 2017 |
| spider | Enoplognatha latimana | a comb-footed spider | 9 | 2014 |
| spider | Enoplognatha mordax | a comb-footed spider | 2 | 1998 |
| spider | Enoplognatha ovata (sensu lato) | Candy Stripe Spider | 91 | 2022 |
| spider | Enoplognatha ovata (sensu stricto) | a comb-footed spider | 6 | 2019 |
| spider | Enoplognatha thoracica | a comb-footed spider | 4 | 1999 |
| spider | Entelecara acuminata | a money spider | 2 | 1965 |
| spider | Entelecara congenera | a money spider | 1 | 2004 |
| spider | Episinus angulatus | a comb-footed spider | 4 | 1998 |
| spider | Episinus maculipes | a comb-footed spider | 1 | 2013 |
| spider | Episinus truncatus | a comb-footed spider | 8 | 2013 |
| spider | Eratigena | a Eratigena house spider (unidentified) | 1 | 2023 |
| spider | Eratigena agrestis | a cobweb spider | 1 | 1995 |
| spider | Eratigena atrica | Giant House Spider | 6 | 2023 |
| spider | Eratigena duellica | a House Spider | 6 | 2023 |
| spider | Erigone atra | a money spider | 62 | 2019 |
| spider | Erigone dentipalpis | a money spider | 49 | 2019 |
| spider | Erigone longipalpis | a money spider | 1 | 2019 |
| spider | Erigone promiscua | a money spider | 3 | 1996 |
| spider | Ero | a Ero pirate spider (unidentified) | 3 | 2023 |
| spider | Ero cambridgei | a pirate spider | 2 | 2019 |
| spider | Ero furcata | a pirate spider | 5 | 1999 |
| spider | Euophrys frontalis | a jumping spider | 25 | 2012 |
| spider | Evarcha falcata | a jumping spider | 9 | 2019 |
| springtail | Entomobrya | an Entomobrya species (unidentified) | 2 | 2023 |
| springtail | Entomobrya albocincta | a springtail (Collembola) | 3 | 2023 |
| springtail | Entomobrya intermedia | a springtail (Collembola) | 13 | 2023 |
| springtail | Entomobrya multifasciata | a springtail (Collembola) | 2 | 2023 |
| springtail | Entomobrya nicoleti | a springtail (Collembola) | 2 | 2020 |
| springtail | Entomobrya nivalis | a springtail (Collembola) | 4 | 2014 |
| springtail | Entomobryidae | an Entomobryidae species (unidentified) | 2 | 2023 |
| springtail | Entomobryomorpha | an Entomobryomorpha species (unidentified) | 1 | 2023 |
| tick or mite (acarine) | Epitrimerus trilobus | a gall mite | 3 | 2022 |
| tick or mite (acarine) | Eriophyes | a gall mite (unidentified) | 4 | 2012 |
| tick or mite (acarine) | Eriophyes arianus | a gall mite | 3 | 2018 |
| tick or mite (acarine) | Eriophyes avellanae | a gall mite | 21 | 2004 |
| tick or mite (acarine) | Eriophyes axillare | a gall mite | 1 | 1999 |
| tick or mite (acarine) | Eriophyes crataegi | a gall mite | 1 | 2021 |
| tick or mite (acarine) | Eriophyes exilis | a gall mite | 1 | 2011 |
| tick or mite (acarine) | Eriophyes goniothorax | a gall mite | 1 | 2015 |
| tick or mite (acarine) | Eriophyes goniothorax subsp. typicus | a gall mite | 5 | 2001 |
| tick or mite (acarine) | Eriophyes iteana | a gall mite | 1 | 1997 |
| tick or mite (acarine) | Eriophyes laevis | a gall mite | 2 | 2018 |
| tick or mite (acarine) | Eriophyes laevis subsp. inangulis | a gall mite | 3 | 1999 |
| tick or mite (acarine) | Eriophyes lateannulatus | a gall mite | 1 | 2020 |
| tick or mite (acarine) | Eriophyes leiosoma | a gall mite | 4 | 2016 |
| tick or mite (acarine) | Eriophyes macrorhynchus subsp. aceribus | a gall mite | 7 | 2016 |
| tick or mite (acarine) | Eriophyes macrorhynchus subsp. cephalonea | a gall mite | 3 | 1999 |
| tick or mite (acarine) | Eriophyes prunispinosae | a gall mite | 2 | 2011 |
| tick or mite (acarine) | Eriophyes pyri | a gall mite | 3 | 2020 |
| tick or mite (acarine) | Eriophyes pyri subsp. crataegi | a gall mite | 2 | 1996 |
| tick or mite (acarine) | Eriophyes similis | a gall mite | 12 | 2022 |
| tick or mite (acarine) | Eriophyes tiliae | a gall mite | 20 | 2023 |
| tick or mite (acarine) | Eriophyes tiliae subsp. tiliae | a gall mite | 2 | 2008 |
| tick or mite (acarine) | Eriophyes triradiatus | a gall mite | 4 | 1999 |
| tick or mite (acarine) | Eriophyes viburni | a gall mite | 2 | 2021 |
| tick or mite (acarine) | Eugamasus | a mite | 1 | 1938 |
| tick or mite (acarine) | Eutrombidium rostratus | Red Velvet Mite | 1 | 2023 |
| tick or mite (acarine) | Eylais | an Eylais species (unidentified) | 7 | 1991 |
| true fly - | Ectaetia lignicola | a fly | 2 | 2020 |
| true fly - | Eggisops pecchiolii | a blue bottle or green bottle | 1 | 2008 |
| true fly - | Egle rhinotmeta | a fly | 1 | 2021 |
| true fly - | Einfeldia | an Einfeldia species (unidentified) | 1 | 1983 |
| true fly - | Elachiptera | an Elachiptera species (unidentified) | 2 | 2002 |
| true fly - | Elachiptera austriaca | a fly | 1 | 2009 |
| true fly - | Elachiptera brevipennis | a fly | 7 | 2009 |
| true fly - | Elachiptera cornuta agg. | a fly | 15 | 2022 |
| true fly - | Elachiptera megaspis | a fly | 5 | 2002 |
| true fly - | Elachiptera scrobiculata | a fly | 1 | 2009 |
| true fly - | Elgiva | an Elgiva species (unidentified) | 1 | 1997 |
| true fly - | Elgiva cucularia | a snail-killing fly | 3 | 2022 |
| true fly - | Elgiva solicita | a snail-killing fly | 7 | 2021 |
| true fly - | Elodia ambulatoria | a parasitic fly | 1 | 1948 |
| true fly - | Emmesomyia socia | a fly | 1 | 2000 |
| true fly - | Empidoidea | an Empidoidea species (unidentified) | 2 | 2023 |
| true fly - | Empis | an Empis species (unidentified) | 7 | 2023 |
| true fly - | Ephydra | a shore fly (unidentified) | 4 | 1999 |
| true fly - | Ephydra riparia | a shore fly | 1 | 2002 |
| true fly - | Epicampocera succincta | a parasitic fly | 2 | 2012 |
| true fly - | Epichlorops puncticollis | a fly | 4 | 2003 |
| true fly - | Epistrophe | an Epistrophe species (unidentified) | 1 | 2020 |
| true fly - | Episyrphus | an Episyrphus species (unidentified) | 1 | 1997 |
| true fly - | Eribolus hungaricus | a fly | 6 | 2009 |
| true fly - | Erioptera flavata | a cranefly | 4 | 2022 |
| true fly - | Eriothrix rufomaculata | a parasitic fly | 76 | 2023 |
| true fly - | Eristalinus | an Eristalinus species (unidentified) | 1 | 2019 |
| true fly - | Eudasyphora | an Eudasyphora species (unidentified) | 1 | 2019 |
| true fly - | Eudasyphora cyanella | a muscid fly | 4 | 2023 |
| true fly - | Eudorylas fuscipes | a big-headed fly | 1 | 2000 |
| true fly - | Eudorylas longifrons | a big-headed fly | 5 | 2008 |
| true fly - | Eudorylas montium | a big-headed fly | 1 | 2008 |
| true fly - | Eudorylas obliquus | a big-headed fly | 5 | 2008 |
| true fly - | Eudorylas obscurus | a big-headed fly | 1 | 2003 |
| true fly - | Eudorylas subfascipes | a big-headed fly | 1 | 2003 |
| true fly - | Eudorylas subterminalis | a big-headed fly | 1 | 2006 |
| true fly - | Eudorylas zermattensis | a big-headed fly | 2 | 2008 |
| true fly - | Eudorylas zonellus | a big-headed fly | 2 | 2008 |
| true fly - | Eulimosina ochripes | a lesser dung fly | 1 | 2003 |
| true fly - | Eumea linearicornis | a parasitic fly | 3 | 2003 |
| true fly - | Eumerus | an Eumerus species (unidentified) | 1 | 2016 |
| true fly - | Eurina lurida | a fly | 1 | 2000 |
| true fly - | Eurychaeta palpalis | a blue bottle or green bottle | 1 | 2001 |
| true fly - | Eustalomyia festiva | a fly | 2 | 2014 |
| true fly - | Euthycera fumigata | a snail-killing fly | 7 | 2021 |
| true fly - | Exorista larvarum | a parasitic fly | 6 | 2008 |
| true fly - | Exorista rustica | a parasitic fly | 6 | 2008 |
| true fly - | Exorista tubulosa | a parasitic fly | 2 | 2004 |
| true fly - cranefly | Ellipteroides lateralis | a cranefly | 5 | 2001 |
| true fly - cranefly | Epiphragma ocellare | a cranefly | 15 | 2022 |
| true fly - cranefly | Erioconopa trivialis | a cranefly | 11 | 2022 |
| true fly - cranefly | Erioptera fuscipennis | a cranefly | 3 | 2001 |
| true fly - cranefly | Erioptera fusculenta | a cranefly | 1 | 2002 |
| true fly - cranefly | Erioptera lutea | a cranefly | 9 | 2022 |
| true fly - cranefly | Erioptera meijerei | a cranefly | 1 | 1999 |
| true fly - (diptera) | Eloeophila maculata | an insect - true fly (Diptera) | 5 | 2022 |
| true fly - (diptera) | Eloeophila submarmorata | an insect - true fly (Diptera) | 3 | 2022 |
| true fly - (diptera) | Emmesomyia grisea | an insect - true fly (Diptera) | 1 | 2000 |
| true fly - (diptera) | Euphylidorea dispar | an insect - true fly (Diptera) | 1 | 2001 |
| true fly - (diptera) | Exechiopsis leptura | an insect - true fly (Diptera) | 2 | 2020 |
| true fly - hoverfly | Epistrophe diaphana | a hoverfly | 18 | 2013 |
| true fly - hoverfly | Epistrophe eligans | a hoverfly | 177 | 2023 |
| true fly - hoverfly | Epistrophe grossulariae | a hoverfly | 43 | 2021 |
| true fly - hoverfly | Epistrophe nitidicollis | a hoverfly | 10 | 2023 |
| true fly - hoverfly | Episyrphus balteatus | Marmalade Hoverfly | 768 | 2023 |
| true fly - hoverfly | Eristalinus aeneus | a hoverfly | 8 | 2022 |
| true fly - hoverfly | Eristalinus sepulchralis | a hoverfly | 31 | 2023 |
| true fly - hoverfly | Eristalis | an Eristalis hoverfly (unidentified) | 42 | 2020 |
| true fly - hoverfly | Eristalis abusivus | an Eristalis hoverfly | 3 | 2013 |
| true fly - hoverfly | Eristalis arbustorum | an Eristalis hoverfly | 238 | 2022 |
| true fly - hoverfly | Eristalis cryptarum | Bog hoverfly | 1 | 2014 |
| true fly - hoverfly | Eristalis horticola | an Eristalis hoverfly | 41 | 2023 |
| true fly - hoverfly | Eristalis intricarius | an Eristalis hoverfly | 85 | 2022 |
| true fly - hoverfly | Eristalis nemorum | an Eristalis hoverfly | 54 | 2022 |
| true fly - hoverfly | Eristalis pertinax | Tapered Drone Fly | 529 | 2023 |
| true fly - hoverfly | Eristalis tenax | Drone Fly | 527 | 2024 |
| true fly - hoverfly | Eumerus funeralis | a Lesser bulb-fly | 23 | 2020 |
| true fly - hoverfly | Eumerus ornatus | a hoverfly | 4 | 2020 |
| true fly - hoverfly | Eumerus strigatus | a Lesser bulb-fly | 20 | 2021 |
| true fly - hoverfly | Eupeodes | an Eupeodes hoverfly (unidentified) | 14 | 2023 |
| true fly - hoverfly | Eupeodes bucculatus | an Eupeodes hoverfly | 3 | 1997 |
| true fly - hoverfly | Eupeodes corollae | an Eupeodes hoverfly | 84 | 2023 |
| true fly - hoverfly | Eupeodes latifasciatus | an Eupeodes hoverfly | 41 | 2022 |
| true fly - hoverfly | Eupeodes luniger | a hoverfly | 85 | 2023 |
| true fly - hoverfly | Eupeodes nitens | an Eupeodes hoverfly | 2 | 2009 |
| true fly - midge, gnat or mosquito | Epicypta aterrima | a fungus gnat | 1 | 2021 |
| true fly - midge, gnat or mosquito | Exechia bicincta | a fungus gnat | 1 | 2000 |
| true fly - midge, gnat or mosquito | Exechia dorsalis | a fungus gnat | 1 | 2020 |
| true fly - midge, gnat or mosquito | Exechia fusca | a fungus gnat | 3 | 2002 |
| true fly - midge, gnat or mosquito | Exechia nigroscutellata | a fungus gnat | 1 | 2001 |
| true fly - midge, gnat or mosquito | Exechiopsis clypeata | a fungus gnat | 1 | 2001 |
| true fly - midge, gnat or mosquito | Exechiopsis dumitrescae | a fungus gnat | 2 | 2000 |
| true fly - midge, gnat or mosquito | Exechiopsis intersecta | a fungus gnat | 1 | 2000 |
| true fly - midge, gnat or mosquito | Exechiopsis membranacea | a fungus gnat | 2 | 2020 |
| true fly - midge, gnat or mosquito | Exechiopsis pollicata | a fungus gnat | 1 | 2003 |
| true fly - picture-winged, conopid or stilt-legged fly | Euleia heraclei | Celery Fly | 37 | 2022 |
| true fly - picture-winged, conopid or stilt-legged fly | Euphranta toxoneura | a gall fly | 2 | 2000 |
| true fly - robber, empid or dolichopid fly | Elaphropeza ephippiata | a dance fly | 9 | 2020 |
| true fly - robber, empid or dolichopid fly | Empididae | a dance fly (unidentified) | 8 | 2023 |
| true fly - robber, empid or dolichopid fly | Empis aestiva | a dance fly | 9 | 2020 |
| true fly - robber, empid or dolichopid fly | Empis albinervis | a dance fly | 4 | 2002 |
| true fly - robber, empid or dolichopid fly | Empis albohirta | a dance fly | 5 | 2022 |
| true fly - robber, empid or dolichopid fly | Empis bicuspidata | a dance fly | 1 | 1983 |
| true fly - robber, empid or dolichopid fly | Empis caudatula | a dance fly | 15 | 2022 |
| true fly - robber, empid or dolichopid fly | Empis chioptera | a dance fly | 9 | 2021 |
| true fly - robber, empid or dolichopid fly | Empis decora | a dance fly | 1 | 2009 |
| true fly - robber, empid or dolichopid fly | Empis femorata | a dance fly | 3 | 2022 |
| true fly - robber, empid or dolichopid fly | Empis livida | a dance fly | 30 | 2022 |
| true fly - robber, empid or dolichopid fly | Empis longipes | a dance fly | 7 | 2020 |
| true fly - robber, empid or dolichopid fly | Empis lutea | a dance fly | 14 | 2022 |
| true fly - robber, empid or dolichopid fly | Empis nigripes | a dance fly | 4 | 2022 |
| true fly - robber, empid or dolichopid fly | Empis nigritarsis | a dance fly | 10 | 2022 |
| true fly - robber, empid or dolichopid fly | Empis nuntia | a dance fly | 10 | 2022 |
| true fly - robber, empid or dolichopid fly | Empis opaca | a dance fly | 2 | 2020 |
| true fly - robber, empid or dolichopid fly | Empis prodromus | a dance fly | 1 | 1949 |
| true fly - robber, empid or dolichopid fly | Empis punctata | a dance fly | 3 | 2022 |
| true fly - robber, empid or dolichopid fly | Empis scutellata | a dance fly | 12 | 2022 |
| true fly - robber, empid or dolichopid fly | Empis stercorea | a dance fly | 4 | 2021 |
| true fly - robber, empid or dolichopid fly | Empis tessellata | a dance fly | 72 | 2023 |
| true fly - robber, empid or dolichopid fly | Empis trigramma | a dance fly | 4 | 2022 |
| true fly - robber, empid or dolichopid fly | Empis tumida | a dance fly | 1 | 1983 |
| true fly - robber, empid or dolichopid fly | Empis volucris | a dance fly | 1 | 2013 |
| true fly - robber, empid or dolichopid fly | Euthyneura halidayi | a dance fly | 1 | 2006 |
| true fly - soldier or snipe fly | Eupachygaster tarsalis | a soldier fly | 1 | 2020 |
| woodlouse | Eurydice pulchra | Speckled Sea Louse | 7 | 1976 |
| worm | Eisenia | an Eisenia species (unidentified) | 1 | 2016 |
| worm | Eisenia fetida | Tiger Worm (N. America) | 17 | 2020 |
| worm | Eiseniella tetraedra | Square-tailed Worm | 31 | 2017 |
| worm | Enchytraeidae | a whiteworm (unidentified) | 6 | 2023 |
| worm | Eteone flava | an annelid | 1 | 1936 |
| worm | Eunoe nodosa | an annelid | 1 | 1936 |