Gordon appeared in the following TV movies: Spectre (1977), The Last Giraffe (1979), Noble House (1988), The Lady ad the Highway Man (1989) and The Winslow Boy (1989).
Among Gordon's many stage appearances are the following: Seagulls Over Sorrento (1951), Moby Dick (1955), Macbeth (1966 & 1975), This Story of Yours (1968), Hamlet (1969), Hedda Gabler (1970), Twelth Night (1976) and Cards on the Table (1981).
In 1968, Gordon appeared on Broadway in Hamlet.
Gordon's parents were Thomas Jackson and Margaret Fletcher.
Clarence Derwent Award for Best Actor (1969).
Royal Television Society's Best Actor for Hudson in Upstairs, Downstairs (1975).
Emmy Award for Best Actor also for Hudson in Upstairs, Downstairs (1976).
Order of the British Empire (OBE) (1979).
Logie for Best Supporting Actor in a Miniseries for A Town Like Alice (1982).