Just discovered this one. For anyone living in the SW - Bristol/ Weston area the Curzon Cinema in Clevedon is doing a club for mothers and their babies.
It runs on Wednesdays 11am. The films are all latest releases.
I'm trying it or the first time today so will report if its any good. Think its a good idea though as I've been kicked out or refused entry to a cinema more than once because I took dd1 or dd2 with me (and they are usually excellent in these circumstances because I love movies and go whenever I can).