The Fourth Protocol (1987)

Director: John Mackenzie

Starring: Michael Caine, Pierce Brosnan, Ned Beatty, Joanna Cassidy, Julian Glover, Michael Gough, Ray McAnally, Ian Richardson

Locations

Chelmsford, Essex

Colchester, Essex

Chicheley Hall, Newport Pagnell, Buckinghamshire

Eton College, Windsor, Berkshire

Heelands, Milton Keynes, Buckinghamshire