Slender Fringe-moss
- Group
- Mosses
- Records since 2000
- 1,618
- Scientific name
- Bucklandiella sudetica
Clustered Bellflower
- Group
- Flowering plants
- Records since 2000
- 1,617
- Scientific name
- Campanula glomerata
Orange-Clubbed Sea Slug
- Group
- Molluscs
- Records since 2000
- 1,616
- Scientific name
- Limacia clavigera
Brown Sea Cucumber
- Group
- Starfish and sea urchins
- Records since 2000
- 1,613
- Scientific name
- Aslia lefevrei
Purple Spoonwort
- Group
- Liverworts
- Records since 2000
- 1,597
- Scientific name
- Pleurozia purpurea
Apistobranchus tullbergi
- Group
- Worms (annelids)
- Records since 2000
- 1,594
- Peak month
- July
Scarce Emerald Damselfly
- Group
- Dragonflies and damselflies
- Records since 2000
- 1,585
- Scientific name
- Lestes dryas
Hairy Sand Weed
- Group
- Seaweeds and algae
- Records since 2000
- 1,583
- Scientific name
- Cladostephus spongiosus
Cladonia rangiformis
- Group
- Lichens
- Records since 2000
- 1,582
- Peak month
- July
River Grimmia
- Group
- Mosses
- Records since 2000
- 1,582
- Scientific name
- Schistidium rivulare
Giant fescue
- Group
- Flowering plants
- Records since 2000
- 1,581
- Scientific name
- Lolium giganteum
Sea Mayweed
- Group
- Flowering plants
- Records since 2000
- 1,577
- Scientific name
- Tripleurospermum maritimum
Priapulid worm
- Group
- Other invertebrates
- Records since 2000
- 1,576
- Scientific name
- Priapulus caudatus
Centropages hamatus
- Group
- Crustaceans
- Records since 2000
- 1,572
- Peak month
- July
Common European Whirligig Beetle
- Group
- Beetles
- Records since 2000
- 1,564
- Scientific name
- Gyrinus substriatus
Fir Clubmoss
- Group
- Clubmosses
- Records since 2000
- 1,562
- Scientific name
- Huperzia selago
Megaluropus agilis
- Group
- Crustaceans
- Records since 2000
- 1,556
- Peak month
- July
Lesser Water-parsnip
- Group
- Flowering plants
- Records since 2000
- 1,555
- Scientific name
- Berula erecta
Ascidian
- Group
- Sea squirts
- Records since 2000
- 1,550
- Scientific name
- Styela clava
Nut-moss
- Group
- Mosses
- Records since 2000
- 1,549
- Scientific name
- Diphyscium foliosum
Dwarf Pond Snail
- Group
- Molluscs
- Records since 2000
- 1,548
- Scientific name
- Galba truncatula
Dark Fruit-tree Tortrix
- Group
- Butterflies and moths
- Records since 2000
- 1,546
- Scientific name
- Pandemis heparana
Fool's Parsley
- Group
- Flowering plants
- Records since 2000
- 1,545
- Scientific name
- Aethusa cynapium
Hydrangea
- Group
- Flowering plants
- Records since 2000
- 1,538
- Scientific name
- Hydrangea macrophylla
Bog Pimpernel
- Group
- Flowering plants
- Records since 2000
- 1,537
- Scientific name
- Lysimachia tenella
Seaside Grimmia
- Group
- Mosses
- Records since 2000
- 1,537
- Scientific name
- Schistidium maritimum
Yellow-legged Black
- Group
- True flies
- Records since 2000
- 1,534
- Scientific name
- Pachygaster leachii
Sickle-leaved Hook-moss
- Group
- Mosses
- Records since 2000
- 1,532
- Scientific name
- Sanionia uncinata
Iphinoe trispinosa
- Group
- Crustaceans
- Records since 2000
- 1,529
- Peak month
- July
Hollyhock
- Group
- Flowering plants
- Records since 2000
- 1,519
- Scientific name
- Alcea rosea
Palmate Germanderwort
- Group
- Liverworts
- Records since 2000
- 1,511
- Scientific name
- Riccardia palmata
Sarcophaga carnaria
- Group
- True flies
- Records since 2000
- 1,511
- Peak month
- July
Hairy Violet
- Group
- Flowering plants
- Records since 2000
- 1,506
- Scientific name
- Viola hirta
Anthomyia liturata
- Group
- True flies
- Records since 2000
- 1,505
- Peak month
- July
Spotty Scalewort
- Group
- Liverworts
- Records since 2000
- 1,495
- Scientific name
- Frullania fragilifolia
Candy Stripe Flatworm
- Group
- Flatworms
- Records since 2000
- 1,494
- Scientific name
- Prostheceraeus vittatus
Dwarf Thistle
- Group
- Flowering plants
- Records since 2000
- 1,492
- Scientific name
- Cirsium acaule
Ash-bark Knot-horn
- Group
- Butterflies and moths
- Records since 2000
- 1,487
- Scientific name
- Euzophera pinguis
Corndaisy
- Group
- Flowering plants
- Records since 2000
- 1,479
- Scientific name
- Glebionis segetum
Brown China-mark
- Group
- Butterflies and moths
- Records since 2000
- 1,476
- Scientific name
- Elophila nymphaeata
Stelligera stuposa
- Group
- Sponges
- Records since 2000
- 1,472
- Peak month
- July
Four-lined Polycera
- Group
- Molluscs
- Records since 2000
- 1,471
- Scientific name
- Polycera quadrilineata
Rayed Glass Snail
- Group
- Molluscs
- Records since 2000
- 1,467
- Scientific name
- Perpolita hammonis
Golden-brown Tubic
- Group
- Butterflies and moths
- Records since 2000
- 1,465
- Scientific name
- Crassa unitella
Dusky Fork-moss
- Group
- Mosses
- Records since 2000
- 1,460
- Scientific name
- Dicranum fuscescens
Water Dock
- Group
- Flowering plants
- Records since 2000
- 1,458
- Scientific name
- Rumex hydrolapathum
Hylemyza partita
- Group
- True flies
- Records since 2000
- 1,457
- Peak month
- July
Grey Dagger
- Group
- Butterflies and moths
- Records since 2000
- 1,456
- Scientific name
- Acronicta psi