- Mr. Birtles, the father of Sheila Crossley, appearing between December 1962 and January 1963
- A Taxi Driver in June 1965
- Building foreman Wilf Jones in April 1968.
John found fame relatively late in his career through his roles in the TV sit-coms I Didn't Know You Cared and in Last of the Summer Wine where he played the cafe owner Sid. He also appeared in Jack Rosenthal's film version of The Lovers.