[4] The last of his four films released in 1959 was Charles Crichton's The Battle of the Sexes, playing Andrew Darling, with Peter Sellers and Robert Morley heading the cast.

[7] Clark briefly appeared on television, playing Jamie Lang in an episode of the British police series No Hiding Place ("Whistle and I'll Come", 1961).

[8] After playing George Lockwood in the film A Pair of Briefs (1962),[9] Clark returned to TV as a Foreman in an episode of the Suspense anthology series ("Diversion to Danger", 1963).

[10] He would remain on the small screen for the next six years, in such series as The Troubleshooters and Dr. Finlay's Casebook, also re-surfacing in No Hiding Place, this time as Harry Armstrong in the episode "All Dead and Buried" (1963).

[11] From then until his retirement in 1980, he concentrated once more on contributions to television projects, amongst which were Sutherland's Law, The Prime of Miss Jean Brodie, Play for Today and Enemy of the People.