If you can't find anywhere with a play area within price why not look at the smaller sites, but ones that have plenty of space to run around? you could always then do an afternoon trip to the park. Hope you find somewhere nice, we are slightly over your 50 miles range but they are out there.
------------- Visit Llandrindod Wells! Great scenery, walks, cycling, red kites. Ideal for exploring Mid Wales.
Thanks Kenles for your suggestion, we have an annual pass for the Cotswold Farm Park.
We have decided to go to Blackmore for a couple of days, we are C&CC members and their over 55 rate still applies for half term, so that's great. They have been most helpful on the phone to us too.
Don't forget to leave a review of the campsites you have visited this year or last!
We have just come back from a 4 night break from Aeron coast,really nice site, I've got a 6 yr old and a 2 yr old, was a really lovely site perfect for a family with kids, not sure how far from yourself it is but I would say defiantly worth a visit at some point, we were that impressed be going again in August bank holiday.....good luck were ever you go