We'll be in the UK for 10 days at the end of November.
Most of my family will be working during the week, so we don't have many plans. We don't have a whole lot of $$ to spend on admission fees but can roam around since we'll have a hire care.

Any thoughts on fun activities for a 2 year old? Any free or cheap indoor play places? Good indoor pools that allow toddlers?

I can get in free to whipsnade and Woburn so we were going to do that.

Suggestions?