Peter Cook as Michael Rimmer

Denholm Elliott as Peter NIss

Arthur Lowe as Ferret

John Cleese as Pumer

Vanessa Howard as Patricia Cartwright

Ronald Fraser as Tom Hutchinson

Graham Chapman as Fromage

Ann Beach as Receptionist

Desmond Walter-Ellis as Buffery

Dudley Foster as Federman

James Cossins as Crodder

Valerie Leon as Tanya

William Job as Waring

Elspeth March as Mrs. Ferret

Dennis Price as Fairburn

Monika Ringwald as Girl in Commercial

Diana Coupland as Mrs. Spimm

Michael Trubshawe as Mandeville

Harold Pinter as Steven Hench

Ronnie Corbett as Interviewer

Norman Bird as Alderman Poot

Graham Crowden as Bishop of Cowley

Richard Pearson as Wilting

Jerry Ram as Ranjit X

Roger Maxwell as Party Chairman

George A. Cooper as Blacket

Arthur Lovegrove as Studio Doorman

Roland Culver as Sir Eric Bentley

Jonathan Cecil as 'Spot'

Ronald Baddiley as Freddie Daring

Frank Thornton as Tom Stoddart

Richard Caldicot as Bream

Nicholas Phipps as Snaggot

Guy Middleton as Potter

Julian Glover as Colonel Moffat

Robert Raglan as General Strike

Norman Rossington as Guide at Porton Down

Martin Boddey as Major Mathieson

Michael Barrington as Major Scott

Michael Bates as Mr. Spimm

Sinéad Cusack as Yvonne (Uncredited)

Zakes Mokae as Mugger (uncredited)