Wall Lettuce
- Group
- Flowering plants
- Records since 2000
- 2,982
- Scientific name
- Mycelis muralis
Rough Chervil
- Group
- Flowering plants
- Records since 2000
- 2,981
- Scientific name
- Chaerophyllum temulum
Chimney Sweeper
- Group
- Butterflies and moths
- Records since 2000
- 2,975
- Scientific name
- Odezia atrata
Large Amber Snail
- Group
- Molluscs
- Records since 2000
- 2,971
- Scientific name
- Succinea putris
Common Swift
- Group
- Butterflies and moths
- Records since 2000
- 2,958
- Scientific name
- Korscheltellus lupulina
Ophelina acuminata
- Group
- Worms (annelids)
- Records since 2000
- 2,953
- Peak month
- June
Creeping-jenny
- Group
- Flowering plants
- Records since 2000
- 2,927
- Scientific name
- Lysimachia nummularia
Darkened Button Lichen
- Group
- Lichens
- Records since 2000
- 2,926
- Scientific name
- Buellia aethalea
Larger Noterus
- Group
- Beetles
- Records since 2000
- 2,920
- Scientific name
- Noterus clavicornis
Marsh Cinquefoil
- Group
- Flowering plants
- Records since 2000
- 2,914
- Scientific name
- Comarum palustre
White Bryony
- Group
- Flowering plants
- Records since 2000
- 2,903
- Scientific name
- Bryonia dioica
Syllis armillaris
- Group
- Worms (annelids)
- Records since 2000
- 2,890
- Peak month
- June
Marsh Foxtail
- Group
- Flowering plants
- Records since 2000
- 2,883
- Scientific name
- Alopecurus geniculatus
Yellow Oat-grass
- Group
- Flowering plants
- Records since 2000
- 2,868
- Scientific name
- Trisetum flavescens
Celery-leaved Buttercup
- Group
- Flowering plants
- Records since 2000
- 2,860
- Scientific name
- Ranunculus sceleratus
Rusty Urchin-shell
- Group
- Molluscs
- Records since 2000
- 2,852
- Scientific name
- Tellimya ferruginosa
Smaller
- Group
- Mosses
- Records since 2000
- 2,849
- Scientific name
- Cinclidotus fontinaloides
Blood-vein
- Group
- Butterflies and moths
- Records since 2000
- 2,838
- Scientific name
- Timandra comae
Hydroporus planus
- Group
- Beetles
- Records since 2000
- 2,799
- Peak month
- June
False Fox-sedge
- Group
- Flowering plants
- Records since 2000
- 2,785
- Scientific name
- Carex otrubae
Marsh Horsetail
- Group
- Ferns and horsetails
- Records since 2000
- 2,785
- Scientific name
- Equisetum palustre
Spiny Myrtea
- Group
- Molluscs
- Records since 2000
- 2,781
- Scientific name
- Myrtea spinifera
Varied Carpet Beetle
- Group
- Beetles
- Records since 2000
- 2,765
- Scientific name
- Anthrenus verbasci
Phyllodoce groenlandica
- Group
- Worms (annelids)
- Records since 2000
- 2,725
- Peak month
- June
Agapanthia villosoviridescens
- Group
- Beetles
- Records since 2000
- 2,723
- Peak month
- June
Hop Trefoil
- Group
- Flowering plants
- Records since 2000
- 2,721
- Scientific name
- Trifolium campestre
19-spot Ladybird
- Group
- Beetles
- Records since 2000
- 2,718
- Scientific name
- Anisosticta novemdecimpunctata
Highly pathogenic H5 avian influenza
- Group
- Microorganisms and protists
- Records since 2000
- 2,715
- Peak month
- June
Violet Ground Beetle
- Group
- Beetles
- Records since 2000
- 2,709
- Scientific name
- Carabus violaceus
Bladder Campion
- Group
- Flowering plants
- Records since 2000
- 2,695
- Scientific name
- Silene vulgaris
Clouded-bordered Brindle
- Group
- Butterflies and moths
- Records since 2000
- 2,687
- Scientific name
- Apamea crenata
Hydroporus pubescens
- Group
- Beetles
- Records since 2000
- 2,670
- Peak month
- June
Clytocerus ocellaris
- Group
- True flies
- Records since 2000
- 2,664
- Peak month
- June
Watercress
- Group
- Flowering plants
- Records since 2000
- 2,659
- Scientific name
- Nasturtium officinale
Common Spike-rush
- Group
- Flowering plants
- Records since 2000
- 2,651
- Scientific name
- Eleocharis palustris
Wild Mignonette
- Group
- Flowering plants
- Records since 2000
- 2,651
- Scientific name
- Reseda lutea
Trioza urticae
- Group
- True bugs
- Records since 2000
- 2,647
- Peak month
- June
Green-ribbed Sedge
- Group
- Flowering plants
- Records since 2000
- 2,642
- Scientific name
- Carex binervis
Spio armata
- Group
- Worms (annelids)
- Records since 2000
- 2,636
- Peak month
- June
Wild Radish
- Group
- Flowering plants
- Records since 2000
- 2,631
- Scientific name
- Raphanus raphanistrum
Aplidium punctum
- Group
- Sea squirts
- Records since 2000
- 2,619
- Peak month
- June
Deraeocoris flavilinea
- Group
- True bugs
- Records since 2000
- 2,604
- Peak month
- June
White-legged harp ground beetle
- Group
- Beetles
- Records since 2000
- 2,577
- Scientific name
- Paranchus albipes
Opomyza germinationis
- Group
- True flies
- Records since 2000
- 2,572
- Peak month
- June
Wart lichen
- Group
- Fungi
- Records since 2000
- 2,571
- Scientific name
- Verrucaria macrostoma
Nut Leaf Weevil
- Group
- Beetles
- Records since 2000
- 2,562
- Scientific name
- Strophosoma melanogrammum
Abyssoninoe hibernica
- Group
- Worms (annelids)
- Records since 2000
- 2,559
- Peak month
- June
Nettle Clustercup Rust fungus
- Group
- Fungi
- Records since 2000
- 2,554
- Scientific name
- Puccinia urticata