If your kids (or you) are Harry Potter fans, highly recommend the Warner Brothers Studio tours up north of London. Most of the sets preserved and a really nice overall experience. If you want even more magic, there is a cab company that does personal tours of the HP sites where they filmed on location in the early movies......Lacock, Oxford, and several sites in London. All day gig with just you and a very knowledgable driver ( request Gordon ). Have fun!