[4] Guyler claimed that his character 'Frisby Dike' (named after a Liverpool department store bombed in the Blitz) was the first time the real Liverpudlian accent was heard on the radio.

After ITMA, Guyler worked in roles from the BBC's Children's Hour to classical parts, including with John Gielgud in King Lear.

[1] Guyler took on the role in the title character of a Scotland Yard detective in the Light Programme series Inspector Scott Investigates, created by John P. Wynn, that ran from 1957 to 1963.

In Henry Reed's series of radio dramas about Herbert Reeve's inquiries into the life of Richard Shewin, Guyler played General Gland, soldier-scholar, campanologist and author of war memoirs, including in Not a Drum was Heard.

During the 1960s and 1970s, he starred in the satirical radio programme about life in the British civil service The Men from the Ministry with Richard Murdoch.

One of Guyler's first television appearances was as the manager of a TV repair shop in Three Live Wires in 1961, followed closely by his television success as one of Michael Bentine's sidekicks in the surreal BBC show It's a Square World (1961), but he gained greater recognition on the small screen in his association with comedian and writer Eric Sykes.

In 1975, he appeared in the ITV children's show The Laughing Policeman, based on the Charles Penrose song and his character from the series.

Claiming to be an ex-Desert Rat, Potter would often complain to John Alderton, who played the part of schoolteacher Mr Hedges, about class '5C' and their "dreadful behaviour".

A long-time resident of Norbury, South London, he retired to Ashgrove, Queensland, Australia, in 1993, to be near his younger son Chris, daughter-in-law Judy and his three grandchildren.