Class – Mollusca
| Order | Common name | Scientific name |
|---|---|---|
| Gastropoda – Snails | Lake Limpet | Acroloxus lacustris |
| Gastropoda – Snails | Freshwater Snail | Anisus vortex |
| Gastropoda – Snails | Rams-horn Snail | Gyraulus(Armiger) crista |
| Gastropoda – Snails | Faucet Snail | Bythinia tentaculata |
| Gastropoda – Snails | White Rams-horn | Gyraulus albus |
| Gastropoda – Snails | Flat Rams-horn | Hippeutis complanatus |
| Gastropoda – Snails | Great Pond Snail | Lymnaea stagnalis |
| Gastropoda – Snails | Common Bladder Snail | Physa fontinalis |
| Gastropoda – Snails | Air-breathing Snail | Physella sp. |
| Gastropoda – Snails | Air-breathing Snail | Planorbis carinatus |
| Gastropoda – Snails | Air-breathing Snail | Planorbis planorbis |
| Gastropoda – Snails | New Zealand Mud Snail | Potamopyrgus antipodarum |
| Gastropoda – Snails | Air-breathing Snail | Radix balthica |
| Gastropoda – Snails | Air-breathing Snail | Stagnicola fuscus/palustris |
| Gastropoda – Snails | Copse Snail | Arianta arbustorum |
| Gastropoda – Snails | White-lipped Snail | Cepaea hortensis |
| Gastropoda – Snails | Brown-lipped Snail | Cepaea nemoralis |
| Gastropoda – Snails | Girdled Snail | Hygromia cinctella |
| Gastropoda – Snails | Kentish Snail | Monacha cantiana |
| Gastropoda – Snails | Garden Snail | Helix (Cornu) aspersum |
| Gastropoda – Snails | Pfeiffer’s Amber Snail | Oxyloma pfeifferi |
| Gastropoda – Snails | Snail | Ochilidae sp. |
| Gastropoda – Snails | Snail | Nesovitrea hammonis |
| Gastropoda – Snails | Strawberry Snail | Trochulus striolatus |
| Gastropoda – Snails | Clear Glass Snail | Aegopinella pura |
| Gastropoda – Snails | Two-toothed Door Snail | Clausilia bidentata |
| Gastropoda – Snails | Black Slug | Arion ater agg. |
| Gastropoda – Snails | Durham Slug | Arion flagellus |
| Gastropoda – Snails | Leopard Slug | Limax maximus |
| Gastropoda – Snails | Netted Slug | Derocerus reticulatum |
| Bivalvia – Clams and Mussels | Lake Orb Mussel | Musculium lacustre |
| Bivalvia – Clams and Mussels | European Fingernail Clam | Sphaerium corneum |
| Bivalvia – Clams and Mussels | Pea Clam | Pisidium sp. |