I'd like to take 12 and 15yo DC to visit a "proper" (medieval type) castle this summer. We're in Cambridge and I don't drive, so somewhere within easy-ish reach by train would be ideal.
Warwick looks amazing and you can camp in the grounds, which is very appealing, but it's a bit of a pita to get to (have to go into and across London then out again). Could anyone recommend any other good options?
TIA