Alec Guinness

Maj. Jock Sinclair, D.S.O., M.M.

John Mills

Lt. Col. Basil Barrow (Battalion Commander)

Dennis Price

Maj. Charles 'Charlie' Scott, M.C. (Battalion Executive Officer)

Kay Walsh

Mary Titterington

Susannah York

Morag Sinclair

John Fraser

Cpl. Piper Ian Fraser

Gordon Jackson

Capt. Jimmy Cairns, M.C. (Battalion Adjutant)

Duncan Macrae

Pipe Maj. Duncan MacLean

Percy Herbert

RSM Riddick

Allan Cuthbertson

Capt. Eric Simpson

Paul Whitsun-Jones

Major Dusty Miller

Gerald Harper

Major Hugo Macmillan

Richard Leech

Captain Alec Rattray

Peter McEnery

2nd Lt. David Mackinnon

John Harvey

Sergeant (Bridge Hotel)

Angus Lennie

Orderly Room Clerk

Andrew Keir

Lance Corporal Campbell

Jameson Clark

Sir Alan

Lockwood West

Provost

Joan Hickson

Guest at Party (uncredited)

Frazer Hines

(uncredited)

James Copeland

Officer

Mark Burns

Officer

David Webb

Officer

William Marlowe

Officer