Greasewort
- Group
- Liverworts
- Records since 2000
- 6,627
- Scientific name
- Aneura pinguis
Bumblebee Blacklet
- Group
- True flies
- Records since 2000
- 6,599
- Scientific name
- Cheilosia illustrata
Brown House Moth
- Group
- Butterflies and moths
- Records since 2000
- 6,590
- Scientific name
- Hofmannophila pseudospretella
Rusty Feather-moss
- Group
- Mosses
- Records since 2000
- 6,519
- Scientific name
- Sciuro-hypnum plumosum
Harbor porpoise
- Group
- Mammals
- Records since 2000
- 6,518
- Scientific name
- Phocoena phocoena
Green Mountain Fringe-moss
- Group
- Mosses
- Records since 2000
- 6,463
- Scientific name
- Dilutineuron fasciculare
Borage
- Group
- Flowering plants
- Records since 2000
- 6,379
- Scientific name
- Borago officinalis
Carrot-sponge
- Group
- Sponges
- Records since 2000
- 6,282
- Scientific name
- Amphilectus fucorum
Tumid Notchwort
- Group
- Liverworts
- Records since 2000
- 6,264
- Scientific name
- Lophozia ventricosa
Hard Rush
- Group
- Flowering plants
- Records since 2000
- 6,248
- Scientific name
- Juncus inflexus
Praxillella affinis
- Group
- Worms (annelids)
- Records since 2000
- 6,240
- Peak month
- July
Pollack
- Group
- Fish
- Records since 2000
- 6,232
- Scientific name
- Pollachius pollachius
Seedcorn Maggot
- Group
- True flies
- Records since 2000
- 6,186
- Scientific name
- Delia platura
Mat-grass
- Group
- Flowering plants
- Records since 2000
- 6,125
- Scientific name
- Nardus stricta
Black Horehound
- Group
- Flowering plants
- Records since 2000
- 6,109
- Scientific name
- Ballota nigra
Timothy
- Group
- Flowering plants
- Records since 2000
- 6,033
- Scientific name
- Phleum pratense
Jointed Rush
- Group
- Flowering plants
- Records since 2000
- 6,027
- Scientific name
- Juncus articulatus
St Winifrid's Moss
- Group
- Liverworts
- Records since 2000
- 5,999
- Scientific name
- Chiloscyphus polyanthos
Ciliated sponge
- Group
- Sponges
- Records since 2000
- 5,990
- Scientific name
- Sycon ciliatum
Eurasian Smoothwing
- Group
- True flies
- Records since 2000
- 5,929
- Scientific name
- Scaeva pyrastri
Three Spotted Nettle Bug
- Group
- True bugs
- Records since 2000
- 5,901
- Scientific name
- Liocoris tripustulatus
Spectacle
- Group
- Butterflies and moths
- Records since 2000
- 5,896
- Scientific name
- Abrostola tripartita
Creeping Soft-grass
- Group
- Flowering plants
- Records since 2000
- 5,895
- Scientific name
- Holcus mollis
Mother of Pearl
- Group
- Butterflies and moths
- Records since 2000
- 5,854
- Scientific name
- Patania ruralis
Auger Shell
- Group
- Molluscs
- Records since 2000
- 5,801
- Scientific name
- Turritellinella tricarinata
Common Earwig
- Group
- Other insects
- Records since 2000
- 5,774
- Scientific name
- Forficula auricularia
Burnished Brass
- Group
- Butterflies and moths
- Records since 2000
- 5,765
- Scientific name
- Diachrysia chrysitis
Ophelia borealis
- Group
- Worms (annelids)
- Records since 2000
- 5,763
- Peak month
- July
Agrimony
- Group
- Flowering plants
- Records since 2000
- 5,759
- Scientific name
- Agrimonia eupatoria
Sharp-flowered Rush
- Group
- Flowering plants
- Records since 2000
- 5,653
- Scientific name
- Juncus acutiflorus
Mother of Thyme
- Group
- Flowering plants
- Records since 2000
- 5,633
- Scientific name
- Thymus praecox
Tharyx killariensis
- Group
- Worms (annelids)
- Records since 2000
- 5,588
- Peak month
- July
Smooth Hawk's-beard
- Group
- Flowering plants
- Records since 2000
- 5,576
- Scientific name
- Crepis capillaris
Perennial Sow-thistle
- Group
- Flowering plants
- Records since 2000
- 5,567
- Scientific name
- Sonchus arvensis
Dun-bar
- Group
- Butterflies and moths
- Records since 2000
- 5,535
- Scientific name
- Cosmia trapezina
Large Gray Willow
- Group
- Flowering plants
- Records since 2000
- 5,535
- Scientific name
- Salix cinerea
Square-spotted Clay
- Group
- Butterflies and moths
- Records since 2000
- 5,521
- Scientific name
- Xestia triangulum
Agabus bipustulatus
- Group
- Beetles
- Records since 2000
- 5,478
- Peak month
- July
Clouded Border
- Group
- Butterflies and moths
- Records since 2000
- 5,455
- Scientific name
- Lomaspilis marginata
Mottled Beauty
- Group
- Butterflies and moths
- Records since 2000
- 5,432
- Scientific name
- Alcis repandata
Greater Argentine
- Group
- Fish
- Records since 2000
- 5,341
- Scientific name
- Argentina silus
Parexogone hebes
- Group
- Worms (annelids)
- Records since 2000
- 5,336
- Peak month
- July
Plant bug
- Group
- True bugs
- Records since 2000
- 5,318
- Scientific name
- Plagiognathus arbustorum
Greater Fork-moss
- Group
- Mosses
- Records since 2000
- 5,279
- Scientific name
- Dicranum majus
Cuckoo wrasse
- Group
- Fish
- Records since 2000
- 5,240
- Scientific name
- Labrus mixtus
Frizzled Crisp-moss
- Group
- Mosses
- Records since 2000
- 5,214
- Scientific name
- Tortella tortuosa
Alder's necklace shell
- Group
- Molluscs
- Records since 2000
- 5,202
- Scientific name
- Euspira nitida
Eumida bahusiensis
- Group
- Worms (annelids)
- Records since 2000
- 5,173
- Peak month
- July