Cast from Philby, Burgess and Maclean

Anthony Bate

Kim Philby

Derek Jacobi

Guy Burgess

Michael Culver

Donald Maclean

Bernard Archard

Graves

Barrie Cookson

Helenus Milmo

Oliver Ford Davies

Pattterson

Ingrid Hafner

Aileen Philby

Richard Hampton

Major Sansom

Patrick Holt

Peterson

Robin Hooper

Reed

Richard Hurndall

Sir Stewart Menzies

Anthony Langdon

Volkov

Arthur Lowe

Herbert Morrison

David Markham

Skardon

Hugh Morton

Marcus Lipton

Elizabeth Seal

Melinda Maclean