Lesser Black-backed Gull
- Group
- Birds
- Records since 2000
- 1,165,954
- Scientific name
- Larus fuscus
Speckled Wood
- Group
- Butterflies and moths
- Records since 2000
- 798,810
- Scientific name
- Pararge aegeria
Small White
- Group
- Butterflies and moths
- Records since 2000
- 709,791
- Scientific name
- Pieris rapae
Haddock
- Group
- Fish
- Records since 2000
- 617,374
- Scientific name
- Melanogrammus aeglefinus
Common Blue
- Group
- Butterflies and moths
- Records since 2000
- 435,468
- Scientific name
- Polyommatus icarus
Little Egret/Western Reef-Heron
- Group
- Birds
- Records since 2000
- 428,078
- Scientific name
- Egretta garzetta
Whiting
- Group
- Fish
- Records since 2000
- 274,647
- Scientific name
- Merlangius merlangus
Soprano Pipistrelle
- Group
- Mammals
- Records since 2000
- 266,742
- Scientific name
- Pipistrellus pygmaeus
Common Darter
- Group
- Dragonflies and damselflies
- Records since 2000
- 200,125
- Scientific name
- Sympetrum striolatum
Common dab
- Group
- Fish
- Records since 2000
- 176,731
- Scientific name
- Limanda limanda
Black-tailed Godwit
- Group
- Birds
- Records since 2000
- 167,241
- Scientific name
- Limosa limosa
Small Copper
- Group
- Butterflies and moths
- Records since 2000
- 142,326
- Scientific name
- Lycaena phlaeas
Common Carder Bee
- Group
- Bees, wasps and ants
- Records since 2000
- 124,859
- Scientific name
- Bombus pascuorum
Mediterranean Gull
- Group
- Birds
- Records since 2000
- 120,966
- Scientific name
- Ichthyaetus melanocephalus
Common Sandpiper
- Group
- Birds
- Records since 2000
- 107,459
- Scientific name
- Actitis hypoleucos
Painted Lady
- Group
- Butterflies and moths
- Records since 2000
- 105,523
- Scientific name
- Vanessa cardui
Lemon Sole
- Group
- Fish
- Records since 2000
- 94,694
- Scientific name
- Microstomus kitt
Brown Argus
- Group
- Butterflies and moths
- Records since 2000
- 94,102
- Scientific name
- Aricia agestis
Atlantic cod, Cod
- Group
- Fish
- Records since 2000
- 90,151
- Scientific name
- Gadus morhua
American plaice, Long Rough Dab
- Group
- Fish
- Records since 2000
- 90,129
- Scientific name
- Hippoglossoides platessoides
Southern Hawker
- Group
- Dragonflies and damselflies
- Records since 2000
- 88,803
- Scientific name
- Aeshna cyanea
Sandwich Tern
- Group
- Birds
- Records since 2000
- 88,504
- Scientific name
- Thalasseus sandvicensis
Common Greenshank
- Group
- Birds
- Records since 2000
- 77,228
- Scientific name
- Tringa nebularia
Green Sandpiper
- Group
- Birds
- Records since 2000
- 76,512
- Scientific name
- Tringa ochropus
Western Yellow Wagtail
- Group
- Birds
- Records since 2000
- 69,276
- Scientific name
- Motacilla flava
Daubenton's Bat
- Group
- Mammals
- Records since 2000
- 65,340
- Scientific name
- Myotis daubentonii
Atlantic mackerel, Mackerel
- Group
- Fish
- Records since 2000
- 65,051
- Scientific name
- Scomber scombrus
Indian Balsam
- Group
- Flowering plants
- Records since 2000
- 62,045
- Scientific name
- Impatiens glandulifera
Chalk-hill Blue
- Group
- Butterflies and moths
- Records since 2000
- 60,252
- Scientific name
- Lysandra coridon
Red fox
- Group
- Mammals
- Records since 2000
- 56,196
- Scientific name
- Vulpes vulpes
Emerald Damselfly
- Group
- Dragonflies and damselflies
- Records since 2000
- 46,053
- Scientific name
- Lestes sponsa
Ruddy Darter
- Group
- Dragonflies and damselflies
- Records since 2000
- 45,389
- Scientific name
- Sympetrum sanguineum
Wall
- Group
- Butterflies and moths
- Records since 2000
- 43,859
- Scientific name
- Lasiommata megera
Eurasian Spoonbill
- Group
- Birds
- Records since 2000
- 37,657
- Scientific name
- Platalea leucorodia
Green Shieldbug
- Group
- True bugs
- Records since 2000
- 37,202
- Scientific name
- Palomena prasina
Edible Crab
- Group
- Crustaceans
- Records since 2000
- 36,315
- Scientific name
- Cancer pagurus
Adonis Blue
- Group
- Butterflies and moths
- Records since 2000
- 32,407
- Scientific name
- Lysandra bellargus
Large Yellow Underwing
- Group
- Butterflies and moths
- Records since 2000
- 31,787
- Scientific name
- Noctua pronuba
Yellow-legged Gull
- Group
- Birds
- Records since 2000
- 31,327
- Scientific name
- Larus michahellis
Grayling [butterfly]
- Group
- Butterflies and moths
- Records since 2000
- 30,847
- Scientific name
- Hipparchia semele
Manx Shearwater
- Group
- Birds
- Records since 2000
- 30,622
- Scientific name
- Puffinus puffinus
Common Hawker
- Group
- Dragonflies and damselflies
- Records since 2000
- 29,798
- Scientific name
- Aeshna juncea
Osprey
- Group
- Birds
- Records since 2000
- 28,915
- Scientific name
- Pandion haliaetus
Drone Fly
- Group
- True flies
- Records since 2000
- 28,014
- Scientific name
- Eristalis tenax
Sea trout, Brown trout
- Group
- Fish
- Records since 2000
- 27,416
- Scientific name
- Salmo trutta
Black Darter
- Group
- Dragonflies and damselflies
- Records since 2000
- 26,741
- Scientific name
- Sympetrum danae
Pedunculate Oak
- Group
- Flowering plants
- Records since 2000
- 24,087
- Scientific name
- Quercus robur
Saithe, Pollock
- Group
- Fish
- Records since 2000
- 23,988
- Scientific name
- Pollachius virens