He began his career as an actor on stage and in
CBC Radio dramas in the 1950s. He notably also originated the role of Wiff Roach in the original
Tarragon Theatre production of
David French's play
Of the Fields, Lately in 1973. On screen, Webster had roles in theatrical film and television, with frequent performances on
CBC Television anthology series such as
Encounter also known as
General Motors Theatre (1955–61),
First Performance (1957, 1958),
Festival (1961–66),
Performance (1975), and
For the Record (1976). He portrayed Dr. Baird in the original 1956 teleplay
Flight into Danger, as well as playing a doctor in the 1968 film
The Best Damn Fiddler from Calabogie to Kaladar. He portrayed Canadian cabinet minister
James Ralston in the 1988 television miniseries
The King Chronicle, for which he received a
Gemini Award nomination for
Best Supporting Actor in a Drama Program or Series at the
3rd Gemini Awards in 1988. He was also active in the
Canadian Actors' Equity Association, serving a stint as president of the organization in the 1980s. ==Personal life and death==