Hayes was initially reluctant to direct Doctor Who, which he thought of as "a children's show with dodgy effects". However, due to his friendship with head of serials Graeme MacDonald and producer Graham Williams, he agreed to do one, hoping it would never actually happen. He came to like the show, agreeing to do two more.
For City of Death, Hayes travelled to Paris. In this story, he made a "Hitchcock" appearance as the shifty-looking passenger wearing a cloth cap and carrying a metal case seen exiting the train at the Metro station Boissère after the Doctor and Romana — as well as dubbing one of the lines where a gendarme tells the Fourth Doctor that the Mona Lisa has been stolen.
Now aged 85, Hayes is retired and one of the oldest living Dr Who directors. He has granted interviews to Doctor Who Magazine.
- Internet Movie Database at the