[1] After serving as a Lieutenant in the Royal Navy during the Second World War, he returned to stage acting.

[2] During his career, he also appeared in such popular TV series as Crown Court, The Avengers, Emergency Ward 10, All Gas and Gaiters, Undermind, The Saint, Department S, Doomwatch, Timeslip, Potter, To the Manor Born, Whoops Apocalypse and Yes Minister.

Although he had long-running roles in popular dramas like the police series Softly, Softly (where he played the assistant chief constable between 1967 and 1969), his best known role was in the situation comedy The Fall and Rise of Reginald Perrin, which began in 1976, and starred Leonard Rossiter as the title character.

[1] Barron's character, CJ (Charles Jefferson), was Perrin's overbearing boss with the catchphrase "I didn't get where I am today by...".

[citation needed] Barron remained active in the acting profession until his death at the age of 83.