David Garth

as Time Lord (archive footage)

as Old Birkin

as First Elder

as Mr. Quentin (1 episode), as Quentin Elliot (2 episodes)

as Ministry Official

as French Ambassador (1 episode)

as Mr. MacKay

as Defence at public hearing

as Prince de Wissembourg (2 episodes)

as Time Lord

as Managing Director

as Defence, at Public Hearing (1 episode)

as Wehrmacht Captain (1 episode)

as Henley (1 episode)

as John Carker (13 episodes)

as Col. Laird

as Mr Littlewood (1 episode)

as Councillor Anthony Gardner (1 episode)

as Charles I (5 episodes)

as Solicitor Grey

as Group Capt. Austin (1 episode)

as Dr. West (1 episode)

as Time Lord (1 episode), as Radio Telescope Director (1 episode)

as Monsieur Phillippe (1 episode)

as Tredeaven (1 episode)