Michael Caine as Harry Palmer

Nigel Green as Major Dalby

Guy Doleman as Colonel Ross

Sue Lloyd as Jean

Gordon Jackson as Carswell

Aubrey Richards as Radcliffe

Frank Gatliff as Bluejay

Thomas Baptiste as Barney

Oliver MacGreevy as Housemartin

Freda Bamford as Alice

Pauline Winter as Charlady

Anthony Blackshaw as Edwards

Barry Raymond as Gray

Peter Ashmore as Sir Robert

Stanley Meadows as Inspector Keightley

David Glover as Chilcott-Oakes

Mike Murray as Raid Inspector

Anthony Baird as Raid Sergeant

Tony Caunter as O.N.I Man

Charles Rea as Taylor

Ric Hutton as Records Officer

Douglas Blackwell as Murray

Richard Burrell as Operator

Glynn Edwards as Police Station Sergeant

Zsolt Vadaszffy as Prison Doctor

Josef Behrmann as Prison Guard

Max Faulkner as Prison Guard

Paul S. Chapman as Prison Guard

Richard Beale as Security Clerk