Do Shepperton Studios in London offer a tour of the old studio?

Trainboy2002

Ever since I was a young boy, I always wanted to visit the old Thomas the tank engine studio at Shepperton Studios in London. Do they or did they offer a guided tour of the old studio where people could see the original models and sets, and learn how the engines moved? It seems quite unlikely, as the original models are probably not there anymore and are probably reserved in some museum elsewhere in the UK.

I personally would have enjoyed that as a young boy.