Robert Urquhart

as Paul Krempe

as Capt. Hanley

as George Crossfield

as Capt. Lockhart

as Maxwell

as Brian Quell

as 3rd Agent

as Gawaine

as Mike

as Harry

as Thomas Darby

as Baird

as Johnson

as Headmaster

as Hemmings

as Attorney General

as Commander Clayton

as Anthony James Harvey / Andrew Heywood

as Dr. Michael Flynn

as Sir Philip

as Albrecht Hoffman

as Flight Lieutenant Fearnley

as Vic

as Pearson

as Laurence Boythorn

as Frank, Charles' brother

as Paul Krempe (archive footage)

as Harry

as Peter McVurrich

as Sheltie

as Slater

as D.C. McKinnon

as Godfrey

as Clifford Brett

as Jim Ainslie

as Anthony Coldstream

as Auctioneer

as Journalist

as Major Wilson

as Bob

as Mr McLeod

as Barty Bartholomew

as Doria's Father

as Jim Dobson

as Headmaster

as Self (archive footage)

as Sir Andrew McPherson

as Jim Frobisher

as Bryan Maitland

as Evan Gorley-Peters

as Sam Blair

as Duncan Doubleday

as Julian Gort

as Peter Darwin

as George Brant

as Dadda Whalby

as Rutherford

as Dougie

as Minister

as Alexander Grant

as Tom Stockman

as Peter McVurrich

as Minister

as Vic

as Emrys

as Morris

as Martin Rice-Davies

as Sid Morton

as Emrys