The back lot area of the studio tour has a cafe where you can get food and Butterbeer, as well as the sets for Privet Drive and some larger props.
Butterbeer – 7 pounds!
Inside the Knight Bus
The Potters Cottage
The second building contains the special effects, creature studio, and some models used for the movie.
Dobby Character Sketch
Gryffindor Common Room Model
There is also a Diagon Alley set you can walk through.
Near the end of the tour there is a large model of Hogwarts