Denholm Elliott
— Dr. Frank Henson
Tandy Cronyn
— Tracy Loxton
Anthony Valentine
— Garard
Claire Nielson
— Hilary
Alan Browning
— Supt. Brook
John Moreno
— Filton
David Horovitch
— Tredgett
Dennis Chinnery
— Sergeant
Ken Parry
— Taxi Driver
Brian Haines
— Inspector
Mark Wing-Davey
— Cater
Robert Lindsay
— Policeman at Roadblock
Derek Chafer
— Policeman (uncredited)
Kevin Moran
— Policeman (uncredited)
Maureen Nelson
— Policewoman (uncredited)