Welcome to you Glenwood!
I'm the community publisher for the site, and always glad to see new folks joining.
There are usually a number of kids clubs running over the summer, in and around Beaconsfield - pop into the Beacon Sports Centre in Holtspur, take a look on their notice board: http://tinyurl.com/6g2n7ud The Curzon Centre in Beaconsfield New Town and the Library can be useful places also for news of upcoming kids event.
I'll put some useful links below for you:
There are kids dance classes in Beaconsfield: http://tinyurl.com/6clheah
Also there are some Junior Art classes running in July/August:
For budding performers:
All types of venues to entertain the kids close to Beaconsfield: