Aspen
- Group
- Flowering plants
- Records since 2000
- 4,330
- Scientific name
- Populus tremula
Red Thread-gilled Worm
- Group
- Worms (annelids)
- Records since 2000
- 4,250
- Scientific name
- Cirriformia tentaculata
Small Dusty Wave
- Group
- Butterflies and moths
- Records since 2000
- 4,204
- Scientific name
- Idaea seriata
Rim lichen
- Group
- Lichens
- Records since 2000
- 4,199
- Scientific name
- Lecanora campestris
Paradromius linearis
- Group
- Beetles
- Records since 2000
- 4,192
- Peak month
- June
Encrusting Bryozoan
- Group
- Bryozoans
- Records since 2000
- 4,179
- Scientific name
- Conopeum reticulum
Remote Sedge
- Group
- Flowering plants
- Records since 2000
- 4,173
- Scientific name
- Carex remota
Podarkeopsis capensis
- Group
- Worms (annelids)
- Records since 2000
- 4,166
- Peak month
- June
Oxydromus flexuosus
- Group
- Worms (annelids)
- Records since 2000
- 4,148
- Peak month
- June
Bread Wheat
- Group
- Flowering plants
- Records since 2000
- 4,143
- Scientific name
- Triticum aestivum
Lousewort
- Group
- Flowering plants
- Records since 2000
- 4,131
- Scientific name
- Pedicularis sylvatica
Pygospio worm
- Group
- Worms (annelids)
- Records since 2000
- 4,130
- Scientific name
- Pygospio elegans
My Old Friend
- Group
- Lichens
- Records since 2000
- 4,125
- Scientific name
- Protoparmeliopsis muralis
Great Pond Snail
- Group
- Molluscs
- Records since 2000
- 4,111
- Scientific name
- Lymnaea stagnalis
Orange Hawkweed
- Group
- Flowering plants
- Records since 2000
- 4,109
- Scientific name
- Pilosella aurantiaca
Heath fritillary
- Group
- Butterflies and moths
- Records since 2000
- 4,096
- Scientific name
- Mellicta athalia
Black Arion
- Group
- Molluscs
- Records since 2000
- 4,041
- Scientific name
- Arion ater
Mountain Bumble Bee
- Group
- Bees, wasps and ants
- Records since 2000
- 4,024
- Scientific name
- Bombus monticola
Floating Sweet-grass
- Group
- Flowering plants
- Records since 2000
- 4,022
- Scientific name
- Glyceria fluitans
Heath Wood-rush
- Group
- Flowering plants
- Records since 2000
- 3,996
- Scientific name
- Luzula multiflora
White-faced Darter
- Group
- Dragonflies and damselflies
- Records since 2000
- 3,960
- Scientific name
- Leucorrhinia dubia
Limestone Lobed Firedot
- Group
- Lichens
- Records since 2000
- 3,949
- Scientific name
- Variospora flavescens
Chrysotus femoratus
- Group
- True flies
- Records since 2000
- 3,931
- Peak month
- June
Malacoceros fuliginosus
- Group
- Worms (annelids)
- Records since 2000
- 3,920
- Peak month
- June
Bloody Crane's-bill
- Group
- Flowering plants
- Records since 2000
- 3,916
- Scientific name
- Geranium sanguineum
Hairy tare
- Group
- Flowering plants
- Records since 2000
- 3,912
- Scientific name
- Vicia hirsuta
Orange-spotted plant bug
- Group
- True bugs
- Records since 2000
- 3,898
- Scientific name
- Grypocoris stysi
Weld
- Group
- Flowering plants
- Records since 2000
- 3,893
- Scientific name
- Reseda luteola
Helophorus brevipalpis
- Group
- Beetles
- Records since 2000
- 3,891
- Peak month
- June
Rough Hawkbit
- Group
- Flowering plants
- Records since 2000
- 3,881
- Scientific name
- Leontodon hispidus
Ingrailed Clay
- Group
- Butterflies and moths
- Records since 2000
- 3,879
- Scientific name
- Diarsia mendica
Portugal Laurel
- Group
- Flowering plants
- Records since 2000
- 3,862
- Scientific name
- Prunus lusitanica
Marsh Violet
- Group
- Flowering plants
- Records since 2000
- 3,858
- Scientific name
- Viola palustris
Smooth Meadow-grass
- Group
- Flowering plants
- Records since 2000
- 3,858
- Scientific name
- Poa pratensis
Sthenelais limicola
- Group
- Worms (annelids)
- Records since 2000
- 3,852
- Peak month
- June
Striped Slender Robberfly
- Group
- True flies
- Records since 2000
- 3,844
- Scientific name
- Leptogaster cylindrica
Yellow Meadow Ant
- Group
- Bees, wasps and ants
- Records since 2000
- 3,810
- Scientific name
- Lasius flavus
Goat's-beard
- Group
- Flowering plants
- Records since 2000
- 3,794
- Scientific name
- Tragopogon pratensis
Wall Barley
- Group
- Flowering plants
- Records since 2000
- 3,773
- Scientific name
- Hordeum murinum
Garden Chafer
- Group
- Beetles
- Records since 2000
- 3,758
- Scientific name
- Phyllopertha horticola
Anacaena limbata
- Group
- Beetles
- Records since 2000
- 3,727
- Also known as
- Scavenger Water Beetle
Brain Lichen
- Group
- Lichens
- Records since 2000
- 3,724
- Scientific name
- Diploicia canescens
Tubificoides pseudogaster
- Group
- Worms (annelids)
- Records since 2000
- 3,715
- Peak month
- June
Hairy Sedge
- Group
- Flowering plants
- Records since 2000
- 3,686
- Scientific name
- Carex hirta
Snipe fly
- Group
- True flies
- Records since 2000
- 3,679
- Scientific name
- Rhagio tringaria
Crested Tit
- Group
- Birds
- Records since 2000
- 3,640
- Scientific name
- Lophophanes cristatus
Bloody Henry Starfish
- Group
- Starfish and sea urchins
- Records since 2000
- 3,630
- Scientific name
- Henricia oculata
Common Beet
- Group
- Flowering plants
- Records since 2000
- 3,628
- Scientific name
- Beta vulgaris