All species of bats in Britain are protected, with Tattershall Castle and Holy Trinity Church next door sharing one of the largest colonies in Britain. The main species of bats found are Pipistrelles, but a keen bat enthusiast will recognise that there are also Brown Long Eared and Daubenton bats too. The Lincolnshire Bat Group, a voluntary organisation, comes out to monitor the bats annually and helps care for any bats that need any extra tlc.