Anton Rodgers
— Lewis Duncan/Zippy Grimes
Nigel Havers
— Richie
Hywel Bennett
— Harry Essendorf
Michael Byrne
— Gunnar Wedelman
Richard Pearson
— Gerald Fox
Helen Cherry
— Mrs Cooper
Lynda La Plante
— Cecilia Plasche (as Lynda Marchal)
Roy Evans
— Charlie Rose
Ben Ellison
— Polo
Anthony Felton
— Brian
Davyd Harries
— Brian's Father
Melanie Gibson
— Judy
John Normington
— Letter Writer
Charlie Stewart
— Barman