Sir John Sackville (1 episode)
Sir Cyril Barrett (2 episodes)
Richard
Lord Belford
Reggie Barton (1 episode)
Sir George
Professor MacLewton (1 episode)
Senator (2 episodes)
Montesino
Lord Bareacres (6 episodes)
Chairman of the Board
Old Man
Mustrum Ridcully (voice) (7 episodes)
Mustrum Ridcully (voice)
John of Gaunt (1 episode)
John of Gaunt
Old Man
Professor Pollux (4 episodes)
Sir Henry Ancred (1 episode)
Humphrey Folland
Tom Ballard (45 episodes)
Lipetkin
Judge Hate (1 episode)
Professor Temple (1 episode)
Professor Temple
Mr. Graceful
Judge Hate
Home Secretary (1 episode)
Chief Justice (voice)
The Bishop (1 episode)
Headmaster
Herbert
Dr Jock McCannon (14 episodes)
Reverend Dodge (2 episodes)
Lord Belfield
Sir Geoffrey Macklin
Lord Chancellor (3 episodes)
The Bishop
Friar Francis
Old Priest
French
Caius Lucius
Judge Wood (1 episode)
Judge Wood
Theodotus (6 episodes)
Minister (1 episode)
Fitzbanks
Professor Millar
First Sea Lord
Sir Peter
Soldeed (3 episodes)
Collins, the Butler
Fanatics' Leader
Lord Yardarm
Minister (2 episodes)
Prison Doctor
The General
Barberini
Colonel James Bohun (1 episode)
Rodney Tyce (1 episode)
Count Alexei
Dr Smiles
Stewart / Prof. Millar / Meths Drinker
Mr. Clutterbuck
James Telfer (1 episode)
Truscott
Sir Coward de Custard
Lay Preacher
Recruiting Officer
Recruiting officer (1 episode)
Prof. David Cuthbertson (1 episode)
Mr. Bolton
Gobbling (1 episode)
Alfred Spaulton
Bishop of Cowley
Lawyer Max
Reverend Harker (1 episode)
Mr. Trelawny
History Master
Murchie
Prosecuting Counsel
Commander Shaw (5 episodes)
Lancelot the Spiritualist (1 episode)
Naval Officer (uncredited)
Edward Cruickshank (10 episodes)
Scoutmaster
Man Giving Directions to the Beach (uncredited)
Sir Andrew Aguecheek (1 episode)
De Foy (1 episode)
Friar Dennis (1 episode)