Laurence Olivier
(Air Chief Marshal Sir Hugh Dowding),
Michael Caine
(Squadron Leader Canfield),
Christopher Plummer
(Squadron Leader Colin Harvey),
Robert Shaw
(Squadron Leader Skipper),
Trevor Howard
(Air Vice Marshal Keith Park),
Harry Andrews
(Senior Civil Servant),
Michael Bates
(Warrant Officer Warwick),
Isla Blair
(Mrs. Andy),
Robert Flemyng
(Wing Cmdr. Willoughby),
Barry Foster
(Squadron Leader Edwards),
Curd Jürgens
(Baron von Richter),
Ian McShane
(Sgt. Pilot Andy),
Kenneth More
(Group Capt. Baker),
Nigel Patrick
(Group Capt. Hope),
Michael Redgrave
(Air Vice Marshal Evill),
Ralph Richardson
(Sir David Kelly - British Minister to Switzerland),
Patrick Wymark
(Air Vice Marshal Trafford Leigh-Mallory),
Susannah York
(Section Officer Maggie Harvey)