| Acosmetia caliginosa | Reddish buff moth |
| Agabus brunneus | Diving beetle |
| Aglais urticae | Small tortoiseshell |
| Ampedus cardinalis | Cardinal click beetle |
| Ampedus rufipennis | Cardinal click beetle |
| Anax imperator | Emperor dragonfly |
| Anisodactylus nemorivagus | Ground beetle |
| Anisodactylus poeciloides | Ground beetle |
| Anobium punctatum | Furniture beetle |
| Anthocharis cardamines | Orange-tip |
| Apatura iris | Purple emperor |
| Aphis fabae | Black bean aphid |
| Apis mellifera | Honey bee |
| Araneus diadematus | Garden spider |
| Argynnis adippe | High brown fritillary |
| Argyroneta aquatica | Water spider |
| Aricia artaxerxes | Northern brown argus |
| Arion distinctus | Common garden slug |
| Armadillidium vulgare | Pill woodlouse |
| Armandia cirrhosa | Lagoon sandworm |
| Asilus crabroniformis | Hornet robberfly |
| Aspitates gilvaria gilvaria | Straw belle moth |
| Athetis pallustris | Marsh moth |
| Atypus affinis | Purse-web spider |
| Austropotamobius pallipes | Freshwater white-clawed crayfish |
| Bembecia chrysidiformis | Fiery clearwing moth |
| Bembidion nigropiceum | Ground beetle |
| Bembidion testaceum | Ground beetle |
| Bidessus minutissimus | Diving beetle |
| Biston betularia | Peppered moth |
| Blera fallax | Pine hoverfly |
| Boloria euphrosyne | Pearl-bordered fritillary |
| Boloria selene | Small pearl-bordered fritillary |
| Bombus hortorum | Small garden bumblebee |
| Bombus humilis | Brown-banded carder bee |
| Bombus lucorum | White-tailed bumblebee |
| Bombus pascuorum | Common carder bumblebee |
| Bombus ruderatus | Large garden bumblebee |
| Bombus sylvarum | Shrill carder bee |
| Bombus vestalis | Vestal cuckoo bee |
| Bombylius discolor | Dotted bee-fly |
| Bombylius minor | Heath bee-fly |
| Byctiscus populi | Leaf rolling weevil |
| Callicera spinolae | Golden hoverfly |
| Callophrys rubi | Green hairstreak |
| Calophasia lunula | Toadflax brocade moth |
| Calopteryx splendens | Banded demoiselle |
| Carabus intricatus | Blue ground beetle |
| Carterocephalus palaemon | Chequered skipper |
| Cathormiocerus britannicus | Lizard weevil |
