Tramp slug, Brown field slug, Longneck field slug, Chestnut Slug
- Group
- Molluscs
- Records since 2000
- 5,242
- Scientific name
- Deroceras invadens
Nursery Web Spider
- Group
- Spiders
- Records since 2000
- 5,102
- Scientific name
- Pisaura mirabilis
Sand digger shrimp
- Group
- Crustaceans
- Records since 2000
- 5,027
- Scientific name
- Bathyporeia elegans
Flowering Currant
- Group
- Flowering plants
- Records since 2000
- 4,952
- Scientific name
- Ribes sanguineum
Holly Leaf Gall Fly
- Group
- True flies
- Records since 2000
- 4,934
- Scientific name
- Phytomyza ilicis
Common Shiny Woodlouse
- Group
- Crustaceans
- Records since 2000
- 4,917
- Scientific name
- Oniscus asellus
Honesty
- Group
- Flowering plants
- Records since 2000
- 4,830
- Scientific name
- Lunaria annua
Shining Hookeria
- Group
- Mosses
- Records since 2000
- 4,753
- Scientific name
- Hookeria lucens
Square-tailed Worm
- Group
- Worms (annelids)
- Records since 2000
- 4,751
- Scientific name
- Eiseniella tetraedra
Early Grey
- Group
- Butterflies and moths
- Records since 2000
- 4,715
- Scientific name
- Xylocampa areola
Perioculodes longimanus
- Group
- Crustaceans
- Records since 2000
- 4,698
- Peak month
- April
Nodding Thread-moss
- Group
- Mosses
- Records since 2000
- 4,652
- Scientific name
- Pohlia nutans
Great Wood-rush
- Group
- Flowering plants
- Records since 2000
- 4,470
- Scientific name
- Luzula sylvatica
Olive Upright
- Group
- Mayflies
- Records since 2000
- 4,445
- Scientific name
- Rhithrogena semicolorata
Smooth Glass Snail
- Group
- Molluscs
- Records since 2000
- 4,442
- Scientific name
- Aegopinella nitidula
Hydrobius fuscipes
- Group
- Beetles
- Records since 2000
- 4,365
- Peak month
- April
Wood Forget-me-not
- Group
- Flowering plants
- Records since 2000
- 4,355
- Scientific name
- Myosotis sylvatica
Hydropsyche instabilis
- Group
- Caddisflies
- Records since 2000
- 4,225
- Peak month
- April
Thale Cress
- Group
- Flowering plants
- Records since 2000
- 4,163
- Scientific name
- Arabidopsis thaliana
Box bug
- Group
- True bugs
- Records since 2000
- 4,093
- Scientific name
- Gonocerus acuteangulatus
Kidney-spot Ladybird
- Group
- Beetles
- Records since 2000
- 3,907
- Scientific name
- Chilocorus renipustulatus
Mountain hare
- Group
- Mammals
- Records since 2000
- 3,875
- Scientific name
- Lepus timidus
Common Yellow Sally
- Group
- Stoneflies
- Records since 2000
- 3,775
- Scientific name
- Isoperla grammatica
Ivy-leaved Speedwell
- Group
- Flowering plants
- Records since 2000
- 3,722
- Scientific name
- Veronica hederifolia
Winter Heliotrope
- Group
- Flowering plants
- Records since 2000
- 3,719
- Scientific name
- Petasites pyrenaicus
Wood-rust
- Group
- Liverworts
- Records since 2000
- 3,594
- Scientific name
- Nowellia curvifolia
Butterbur [plant]
- Group
- Flowering plants
- Records since 2000
- 3,451
- Scientific name
- Petasites hybridus
Southern String Grimmia
- Group
- Mosses
- Records since 2000
- 3,451
- Scientific name
- Grimmia trichophylla
Common Small Yellow Sally
- Group
- Stoneflies
- Records since 2000
- 3,436
- Scientific name
- Siphonoperla torrentium
Gooden's Nomad Bee
- Group
- Bees, wasps and ants
- Records since 2000
- 3,424
- Scientific name
- Nomada goodeniana
Danish Scurvygrass
- Group
- Flowering plants
- Records since 2000
- 3,402
- Scientific name
- Cochlearia danica
Dandelion
- Group
- Flowering plants
- Records since 2000
- 3,371
- Scientific name
- Taraxacum officinale
Urban bluebottle blowfly, European blowfly
- Group
- True flies
- Records since 2000
- 3,361
- Scientific name
- Calliphora vicina
Pellitory-of-the-wall
- Group
- Flowering plants
- Records since 2000
- 3,346
- Scientific name
- Parietaria judaica
Esolus parallelepipedus
- Group
- Beetles
- Records since 2000
- 3,331
- Peak month
- April
Bourguignat's Slug
- Group
- Molluscs
- Records since 2000
- 3,328
- Scientific name
- Arion fasciatus
Buffish Mining Bee
- Group
- Bees, wasps and ants
- Records since 2000
- 3,293
- Scientific name
- Andrena nigroaenea
Grey-patched Mining Bee
- Group
- Bees, wasps and ants
- Records since 2000
- 3,249
- Scientific name
- Andrena nitida
Oxford Ragwort
- Group
- Flowering plants
- Records since 2000
- 3,206
- Scientific name
- Senecio squalidus
Gooseberry
- Group
- Flowering plants
- Records since 2000
- 3,200
- Scientific name
- Ribes uva-crispa
Tree-moss
- Group
- Mosses
- Records since 2000
- 3,106
- Scientific name
- Climacium dendroides
Paraspio decorata
- Group
- Worms (annelids)
- Records since 2000
- 3,105
- Peak month
- April
Pseudocuma longicorne
- Group
- Crustaceans
- Records since 2000
- 3,104
- Peak month
- April
Budapest slug
- Group
- Molluscs
- Records since 2000
- 3,041
- Scientific name
- Tandonia budapestensis
Common Striped Woodlouse
- Group
- Crustaceans
- Records since 2000
- 3,019
- Scientific name
- Philoscia muscorum
Hover fly
- Group
- True flies
- Records since 2000
- 2,928
- Scientific name
- Cheilosia pagana
Square-stalked Willowherb
- Group
- Flowering plants
- Records since 2000
- 2,928
- Scientific name
- Epilobium tetragonum
Lesser Periwinkle [plant]
- Group
- Flowering plants
- Records since 2000
- 2,910
- Scientific name
- Vinca minor