Richard Johnson as Hugh "Bulldog" Drummond

Elke Sommer as Irma Eckman

Sylva Koscina as Penelope

Suzanna Leigh as Grace

Nigel Green as Carl Petersen

Steve Carlson as Robert Drummond

Virginia North as Brenda

Justine Lord as Miss Ashenden

Leonard Rossiter as Henry Bridgenorth

Laurence Naismith as Sir John Bledlow

Zia Mohyeddin as King Fedra

Lee Montague as Boxer

Milton Reid as Chang

Yasuko Nagazumi as Mitsouko

Didi Sydow as Anna

George Pastell as Carloggio

Dervis Ward as Henry Keller

John Stone as David Wyngarde

Jill Banner as Pam

Nikki Van der Zyl as Penelope (Voice)

Sylvana Henriques as Masseuse

Kitty Swan as Fourth Assassin

Richard Hurndall as Suited Man at Judo Club

Louis Matto as Headwaiter

James Payne as Taxi Driver

Marianne Stone as Weston's Secretary

Loretta White as Girl on King's Yacht

William Mervyn as Chairman of the Phoenician Board

Ralph Michael as Board Member

Terence Conoley as Board Member

Patrick Halpin as Pan-Arabian Oil Board Member

John More as Pan-Arabian Oil Board Member

Colin McKenzie as Pan-Arabian Oil Board Member

Peter Brace as Car Park Assassin

George Sewell as Car Park Assassin

Joe Wadham as Car Park Assassin's Driver