I've just posted a thread on another SN board recommending Marwell zoo - carer goes free and with their annual pass you can get into a whole bunch of other zoos as many times as you like.
So thought it might be cool to do a thread where we all recommend good places to go with disabled kids this summer...
Legoland (Windsor) is the other obvious one near us - carer goes free there plus great access policy.
Birdworld (Farnham) has very reasonable disabled entrance fees, little playground, petting farm, aquarium bit as well as birds. Good value day out.
Where would you recommend?