Lesser Sea-spurrey
- Group
- Flowering plants
- Records since 2000
- 1,038
- Scientific name
- Spergularia marina
Nephrotoma flavipalpis
- Group
- True flies
- Records since 2000
- 1,033
- Peak month
- July
Brittle Swan-neck Moss
- Group
- Mosses
- Records since 2000
- 1,032
- Scientific name
- Campylopus fragilis
Alcyonidium parasiticum
- Group
- Bryozoans
- Records since 2000
- 1,022
- Peak month
- July
Lesser Whipwort
- Group
- Liverworts
- Records since 2000
- 1,012
- Scientific name
- Bazzania tricrenata
Pearl-band Grass Veneer
- Group
- Butterflies and moths
- Records since 2000
- 1,011
- Scientific name
- Catoptria margaritellus
Larch hawk moth
- Group
- Butterflies and moths
- Records since 2000
- 1,008
- Scientific name
- Sphinx pinastri
Purple Thorn
- Group
- Butterflies and moths
- Records since 2000
- 1,008
- Scientific name
- Selenia tetralunaria
Salpingus planirostris
- Group
- Beetles
- Records since 2000
- 1,008
- Peak month
- July
Hairy Spiny Doris
- Group
- Molluscs
- Records since 2000
- 1,006
- Scientific name
- Acanthodoris pilosa
Soldier fly
- Group
- True flies
- Records since 2000
- 1,006
- Scientific name
- Microchrysa flavicornis
Common Lutestring
- Group
- Butterflies and moths
- Records since 2000
- 1,003
- Scientific name
- Ochropacha duplaris
Orthops campestris
- Group
- True bugs
- Records since 2000
- 1,003
- Peak month
- July
Venus casina
- Group
- Molluscs
- Records since 2000
- 1,003
- Peak month
- July
Flecked Snout
- Group
- True flies
- Records since 2000
- 1,002
- Scientific name
- Nemotelus notatus
Broad-leaved Everlasting-pea
- Group
- Flowering plants
- Records since 2000
- 999
- Scientific name
- Lathyrus latifolius
Shady Earwort
- Group
- Liverworts
- Records since 2000
- 999
- Scientific name
- Scapania umbrosa
Brown Bent
- Group
- Flowering plants
- Records since 2000
- 995
- Scientific name
- Agrostis vinealis
An erect bryozoan
- Group
- Bryozoans
- Records since 2000
- 989
- Scientific name
- Bugulina turbinata
Black Currant
- Group
- Flowering plants
- Records since 2000
- 988
- Scientific name
- Ribes nigrum
Lygus pratensis
- Group
- True bugs
- Records since 2000
- 988
- Peak month
- July
Anomalous Flapwort
- Group
- Liverworts
- Records since 2000
- 987
- Scientific name
- Mylia anomala
Fen Bedstraw
- Group
- Flowering plants
- Records since 2000
- 986
- Scientific name
- Galium uliginosum
Cyperus Sedge
- Group
- Flowering plants
- Records since 2000
- 985
- Scientific name
- Carex pseudocyperus
Long-leaved Pouncewort
- Group
- Liverworts
- Records since 2000
- 984
- Scientific name
- Cololejeunea microscopica
Splayed Deerfly
- Group
- True flies
- Records since 2000
- 984
- Scientific name
- Chrysops caecutiens
Floating Hook-moss
- Group
- Mosses
- Records since 2000
- 983
- Scientific name
- Warnstorfia fluitans
Chrysotus gramineus
- Group
- True flies
- Records since 2000
- 982
- Peak month
- July
Blunt Cord-moss
- Group
- Mosses
- Records since 2000
- 979
- Scientific name
- Entosthodon obtusus
Fringed Loosestrife
- Group
- Flowering plants
- Records since 2000
- 979
- Scientific name
- Lysimachia ciliata
Twiggy Spear-moss
- Group
- Mosses
- Records since 2000
- 971
- Scientific name
- Sarmentypnum sarmentosum
Euclymene lombricoides
- Group
- Worms (annelids)
- Records since 2000
- 968
- Peak month
- July
Twisted Bog-moss
- Group
- Mosses
- Records since 2000
- 968
- Scientific name
- Sphagnum contortum
Cabbage
- Group
- Flowering plants
- Records since 2000
- 966
- Scientific name
- Brassica oleracea
Mud dweller
- Group
- Beetles
- Records since 2000
- 966
- Scientific name
- Ilybius ater
Scorched Carpet
- Group
- Butterflies and moths
- Records since 2000
- 966
- Scientific name
- Ligdia adustata
Dark Spectacle
- Group
- Butterflies and moths
- Records since 2000
- 958
- Scientific name
- Abrostola triplasia
Salt and Pepper Microcaddis
- Group
- Caddisflies
- Records since 2000
- 957
- Scientific name
- Agraylea multipunctata
Great Lettuce
- Group
- Flowering plants
- Records since 2000
- 956
- Scientific name
- Lactuca virosa
Aplidium turbinatum
- Group
- Sea squirts
- Records since 2000
- 955
- Peak month
- July
Polycarpa scuba
- Group
- Sea squirts
- Records since 2000
- 952
- Peak month
- July
Spreading-leaved Grimmia
- Group
- Mosses
- Records since 2000
- 952
- Scientific name
- Grimmia ramondii
Hill Notchwort
- Group
- Liverworts
- Records since 2000
- 945
- Scientific name
- Barbilophozia sudetica
Bristly Fingerwort
- Group
- Liverworts
- Records since 2000
- 944
- Scientific name
- Kurzia pauciflora
Bearded Couch
- Group
- Flowering plants
- Records since 2000
- 942
- Scientific name
- Elymus caninus
Broad Damselbug
- Group
- True bugs
- Records since 2000
- 940
- Scientific name
- Nabis flavomarginatus
Rameous bryozoan
- Group
- Bryozoans
- Records since 2000
- 938
- Scientific name
- Omalosecosa ramulosa
Marsh Arrowgrass
- Group
- Flowering plants
- Records since 2000
- 936
- Scientific name
- Triglochin palustris