www.bumblebeesplayhouse.co.uk - soft play centre
its in Brackley, Northants - 15mins from J11 M40
only been open 8 or so weeks and my girls thought it was great.
regular fee is £2.50 but childminders proving their registration get each child in for £2.25 and if you walk (or park car in tesco and walk across the road) - you'll pay £1.75.
prices for 1-3yrs, no charges for under1's or adults. more for over 4's - can't remember them.
play limited to 90mins in busy periods - we stayed for 3hrs today.
and best of all
they serve costa coffee.
apologies if you don't live close enough