If this is your thing then I definitely recommend checking out IWM Duxford if you've never been.
I remember going so long ago during my early days of school and I always wanted to go back. So much aviation history, as well as general wartime history. A bit of everything from every era!
I heard about Duxford and was in Cambridge over the summer but despite it being highly recommended to me, sadly didn't have time to go. I think if I'm in the area next, I will go because I drove past it and it seemed hugh.
It'll probably be a fun trip this summer when the weather's better and the restrictions are all gone!