Here's a great clip of Tom being interviewed during location filming for Revenge of the Cybermen in 1974. The underground caves were shot at Wookey Hole in Somerset.
This was obviously broadcast just before Tom's first season hit the screens, and I guess made for BBC local television.
And here's one of his last interviews whilst in the role, for Nationwide in 1981.
Doctor Who: Twelfth Doctor Year Three #7
2 days ago