Honeycomb Worm
- Group
- Worms (annelids)
- Records since 2000
- 5,154
- Scientific name
- Sabellaria alveolata
Fairy Flax
- Group
- Flowering plants
- Records since 2000
- 5,139
- Scientific name
- Linum catharticum
Cellepora pumicosa
- Group
- Bryozoans
- Records since 2000
- 5,108
- Peak month
- July
Perforate St John's-wort
- Group
- Flowering plants
- Records since 2000
- 5,101
- Scientific name
- Hypericum perforatum
Ferruginous Bee-Grabber
- Group
- True flies
- Records since 2000
- 5,065
- Scientific name
- Sicus ferrugineus
Feathery Bog-moss
- Group
- Mosses
- Records since 2000
- 5,044
- Scientific name
- Sphagnum cuspidatum
Plumose Anemone
- Group
- Jellyfish, corals and anemones
- Records since 2000
- 5,037
- Scientific name
- Metridium dianthus
Lady-fern
- Group
- Ferns and horsetails
- Records since 2000
- 5,010
- Scientific name
- Athyrium filix-femina
Mueller's Pouchwort
- Group
- Liverworts
- Records since 2000
- 5,006
- Scientific name
- Calypogeia muelleriana
Fringed Bog-moss
- Group
- Mosses
- Records since 2000
- 5,005
- Scientific name
- Sphagnum fimbriatum
Branched Bur-reed
- Group
- Flowering plants
- Records since 2000
- 5,001
- Scientific name
- Sparganium erectum
Common cord grass, Rice grass, Townsends grass
- Group
- Flowering plants
- Records since 2000
- 4,974
- Scientific name
- Sporobolus anglicus
Western Earwort
- Group
- Liverworts
- Records since 2000
- 4,917
- Scientific name
- Scapania gracilis
Hirta Beetle
- Group
- Beetles
- Records since 2000
- 4,861
- Scientific name
- Lagria hirta
Box tree moth
- Group
- Butterflies and moths
- Records since 2000
- 4,859
- Scientific name
- Cydalima perspectalis
Quack Grass
- Group
- Flowering plants
- Records since 2000
- 4,798
- Scientific name
- Elymus repens
Drinker
- Group
- Butterflies and moths
- Records since 2000
- 4,790
- Scientific name
- Euthrix potatoria
Small-leaved Elm, Jersey Elm, English Elm
- Group
- Flowering plants
- Records since 2000
- 4,773
- Scientific name
- Ulmus minor
Wild Marjoram
- Group
- Flowering plants
- Records since 2000
- 4,725
- Scientific name
- Origanum vulgare
Urn Haircap
- Group
- Mosses
- Records since 2000
- 4,682
- Scientific name
- Pogonatum urnigerum
Common Centaury
- Group
- Flowering plants
- Records since 2000
- 4,676
- Scientific name
- Centaurium erythraea
Least Carpet
- Group
- Butterflies and moths
- Records since 2000
- 4,668
- Scientific name
- Idaea rusticata
Single-dotted Wave
- Group
- Butterflies and moths
- Records since 2000
- 4,653
- Scientific name
- Idaea dimidiata
Dingy Footman
- Group
- Butterflies and moths
- Records since 2000
- 4,648
- Scientific name
- Collita griseola
Yellow Starry Feather-moss
- Group
- Mosses
- Records since 2000
- 4,629
- Scientific name
- Campylium stellatum
Six-spot Burnet
- Group
- Butterflies and moths
- Records since 2000
- 4,601
- Scientific name
- Zygaena filipendulae
Ruby Tiger Moth
- Group
- Butterflies and moths
- Records since 2000
- 4,565
- Scientific name
- Phragmatobia fuliginosa
Garden Grey
- Group
- Butterflies and moths
- Records since 2000
- 4,538
- Scientific name
- Eudonia mercurella
Little Grey
- Group
- Butterflies and moths
- Records since 2000
- 4,519
- Scientific name
- Eudonia lacustrata
July Highflyer
- Group
- Butterflies and moths
- Records since 2000
- 4,513
- Scientific name
- Hydriomena furcata
Two-banded wasp hoverfly
- Group
- True flies
- Records since 2000
- 4,512
- Scientific name
- Chrysotoxum bicincta
Ladder Flapwort
- Group
- Liverworts
- Records since 2000
- 4,463
- Scientific name
- Nardia scalaris
Sea Plantain
- Group
- Flowering plants
- Records since 2000
- 4,391
- Scientific name
- Plantago maritima
Stoat
- Group
- Mammals
- Records since 2000
- 4,363
- Scientific name
- Mustela erminea
Scentless Mayweed
- Group
- Flowering plants
- Records since 2000
- 4,357
- Scientific name
- Tripleurospermum inodorum
Scalibregma celticum
- Group
- Worms (annelids)
- Records since 2000
- 4,353
- Peak month
- July
Walnut
- Group
- Flowering plants
- Records since 2000
- 4,332
- Scientific name
- Juglans regia
Glycinde nordmanni
- Group
- Worms (annelids)
- Records since 2000
- 4,323
- Peak month
- July
Plant bug
- Group
- True bugs
- Records since 2000
- 4,304
- Scientific name
- Closterotomus norvegicus
Scalloped Oak
- Group
- Butterflies and moths
- Records since 2000
- 4,290
- Scientific name
- Crocallis elinguaria
Pegoplata aestiva
- Group
- True flies
- Records since 2000
- 4,289
- Peak month
- July
Wrinkled Rock Borer
- Group
- Molluscs
- Records since 2000
- 4,289
- Scientific name
- Hiatella arctica
Common Juniper
- Group
- Conifers
- Records since 2000
- 4,287
- Scientific name
- Juniperus communis
Large Bindweed
- Group
- Flowering plants
- Records since 2000
- 4,274
- Scientific name
- Calystegia silvatica
Rusty Willow
- Group
- Flowering plants
- Records since 2000
- 4,258
- Scientific name
- Salix atrocinerea
Golden-head Moss
- Group
- Mosses
- Records since 2000
- 4,224
- Scientific name
- Breutelia chrysocoma
Mougeot's Yoke-moss
- Group
- Mosses
- Records since 2000
- 4,222
- Scientific name
- Amphidium mougeotii
Field Scabious
- Group
- Flowering plants
- Records since 2000
- 4,209
- Scientific name
- Knautia arvensis