John Cannon

A British actor who worked predominantly in television, Cannon appeared in several Doctor Who (1974-1983) stories during the Jon Pertwee and Patrick Troughton eras, as well as numerous episodes of classic television shows such as Steptoe & Son, The Sweeney, Porridge and The Professionals. His other credits included Beau Geste (1982), The Adventures of Sherlock Holmes (1984) and as a Stormtrooper in Star Wars: Episode IV - A New Hope, Star Wars VI - Return of the Jedi and as a Holographic Imperial Officer in Star Wars Episode V - The Empire Strikes Back.
Cast

The Play of the Nativity of the Child Jesus
Self - Announcer (voice)

Out of Town
Lorry Driver

Return of the Jedi
Stormtrooper (uncredited)

Star Wars
Stormtrooper (uncredited)

Superman II
Prison Inmate (uncredited)

Defence of the Realm
Greenmont Detention Centre Officer

S.O.S. Titanic
Man Trying to Storm Lifeboat (uncredited)

The Empire Strikes Back
Holographic Imperial Officer (uncredited)

Doctor Who: The Armageddon Factor
Guard

Doctor Who: The Hand of Fear
Elgin

Outland
Barman (uncredited)

An American Werewolf in London
Villager (uncredited)

Burning an Illusion
Prison Warder