Just in case any of you are looking for a place to have a kids party, you might consider Burghley Road under 5s community centre
It's a great little venue. During the week it's used as a playgroup, it's got two rooms, a kitchen and a little playground outside with a great slide / climbing cubes.
We're having DS's 2nd birthday there, so that the toddlers have space to can run about and have fun that they just won't get at our house!
And any money they make from hire goes back into running the community centre, which is nice to know I think. 