James Fleet

as Geoff

as Bobby Botham

as Derek Abshire

as Ronald Millar

as Narrator

as King George

as Squire Allworthy

as Judge Fang

as Judge Fang

as Judge Fang

as John Ashdown-Hill

as Mick Prentice Snr

as Oliver Lawrence

as Charles Fraser-Smith

as Self

as Archchancellor of Unseen University

as King George III

as Hugo Horton

as Harry Price

as Colonel Merrick

as Oscar Venables

as Patrick Conway

as Dr. Willy Dekoven

as George V

as Tom

as Captain Jack Pearson

as Tom

as Sir Victor Eisen

as Wassily Kandinsky (voice)

as Tom

as The Professor

as Hugo Horton (archive footage) (uncredited)

as Sir Reginald DeCourcy

as Dr. Pilsen

as Mr Darrow

as Chris Lowe

as Carter

as Lord Hawthorne

as John Constable

as Reverend Wakefield

as Mr Bennet

as Professor Stephens

as Professor Stephens

as Various

as Dr. Adam Crawford

as Colonel Fanshawe

as Richard

as Hastings

as Jeremy Tipping

as William

as Kenneth Baker

as George Senior

as Frederick Dorrit

as Alan Jenkins

as Dr. Alex Falconer

as Martin

as Simon

as Lefevre

as Findlay Morrison

as Michael Prendergast

as Alan the Pipe

as Kulygin

as Lytton Strachey

as Maj. Bates

as Merlin

as Alderman Fitzwarren

as Richard Cannerly

as Dad

as Adrian

as Sir Harry

as Moreland

as Ralph Plummer

as Michael Falconer

as Donald

as James Bland

as James Bland

as Prime Minister

as Simon

as Oswald

as John Dashwood

as Inspector Limp

as Harry Roberts

as Hugh Bonning

as Hugo Horton

as Teacher Mr. Banks

as Tom

as Michael Trant

as Hugo Compton

as Algie

as James Grahame

as Jim Thorburn

as Tom

as Bob

as Neil Fairfax (uncredited)

as Neil Fairfax

as Ministry Man

as Peter Wentworth

as Bob

as Prime Minister

as Algie

as Paul Morgan

as Mr. Perkins