Jason Robards

Andrei Sakharov

Glenda Jackson

Yelena Bonner

Nicol Williamson

Malyarov

Frank Finlay

Kravtsov

Michael Bryant

Syshchikov

Paul Freeman

Pavel Leontiev

Anna Massey

Klavdia

Joe Melia

Sergej Kovalov

Lee Montague

Slavsky

Jim Norton

Roy Medvedev

Valentine Pelka

Efrem Sakharov

Catherine Hall

Tanya Sakharov

Debbie Farrington

Lisa Sakharov

Eileen Way

Ruf Grigorievna

Marion Bailey

Ludmilla Kovalov

Anton Lesser

Valery Chalidze

Norman Rodway

Psychiatrist

Elizabeth Spriggs

Nobel Presenter

Paola Dionisotti

Patient's Wife

Avril Elgar

OVIR Administrator

Tenniel Evans

Dean Fedorenko

Jean Heywood

Sakharov's Secretary

Alex McCrindle

Siberia Trainman

Bernard Kay

Prosecutor

John Normington

OVIR Clerk

Olivier Pierre

Reporter

Robert Gwilym

Richard Cubison

Alan David

Ralph Nossek

Ron Donachie

John Forgeham

Vic Tablian

Tom Wilkinson

Derek Lyons

Russian Guard (uncredited)