Ralph Richardson as Lord Fortnum of Alamein

Rita Tushingham as Penelope

Michael Hordern as Bules Martin

Arthur Lowe as Father

Mona Washbourne as Mother

Richard Warwick as Alan

Peter Cook as Inspector

Dudley Moore as Sergeant

Frank Thornton as The BBC

Marty Feldman as Nurse Arthur

Harry Secombe as Shelter Man

Roy Kinnear as Plastic Mac Man

Spike Milligan as Mate

Jimmy Edwards as Nigel

Henry Woolf as Electricity Man

Jack Shepherd as Underwater Vicar

Dandy Nichols as Mrs Ethel Shroake

Bill Wallis as The Prime Minister

Gordon Rollings as Drip Feed Patient

Ronnie Brody as Chauffeur

Cecil Cheng as Chinaman

Edward Malin as Club Waiter

Chris Konyils as Policeman