We get a lot of these up in the old tunnels and forts around here - Meta menardi, the European Cave Spider.
They are quite large, about 5cm, but move very slowly as they have a slow metabolism. They can nip humans but tend to eat millipedes. They often leave egg sacks hanging from balls from the ceiling about the size of a strawberry.
I think I've just put a lot of people off our next WHPS Open Weekend now - silly me.
