He was also involved in the series behind the scenes, Devereaux writing the script and directing the episode The Veteran (1969), for which he received much critical acclaim.

Devereaux based the story of the episode "Double Trouble" on an idea conceived by his children, wrote the screenplay of "Summer Storm" and the script for "The Mine".

Devereaux had been a boy soprano, teenage soldier in the New Guinea campaign during the Second World War, cabbie, storeman and truck driver before moving to the UK in 1950.

He also received critical acclaim, including the AACTA Award for Best Lead Actor in a Television Drama, for his role as Australian Prime Minister Ben Chifley, in the ABC TV mini series The True Believers (1988).

Three months after he was diagnosed with cancer of the oesophagus, Devereaux died in his sleep of kidney failure at his Hampstead home on 17 December 2003 at the age of 78.