Thanks for the advice everyone. I've now put the Bat Conservation Trust number in my phone list. I thought I'd read up on rabies anyway and then cack myself like you do but my cat has his shots every year and there doesn't seem to be a lot else I can do to stop the little bugger. I'll have a quick word with the vet when I go to get him some more worming tablets on Monday.
I wasn't sure where he was finding them because I always thought they liked to be in an enclosed area but it seems he's getting them from a tree in the field at the back of us
Poor things, they're cute little creatures, far too delicate and interesting for him to be playing with though. I'm sure the cat thinks they're the ones we like him to bring us best due to all the screaming. He's such a git.