Roger Moore as Gary Fenn

Martha Hyer as Jo Grinling

Alexis Kanner as Tarquin

Claudie Lange as Marla Kogash

Derek Francis as Sir Charles Moberley

Ursula Howells as Maggi Thwaites

Bernard Lee as Chilmore

Francis Matthews as Ruddock

Dudley Sutton as Warren

Mona Bruce as Myrna

Veronica Carlson as Dinah

Michael Culver as Jim

Gabrielle Drake as Celia

Tim Preece as Sebastian

Norman Eshley as Athol

John Lee as Blake

Lois Lane as Girl Singer

Charles Hyatt as President Maudula

Peter Haigh as T.V. Commentator

Michael Robbins as Garage Attendant

Prudence Drage as Vision Mixer

Stephen Garlick as Small Boy In Coach

Toni Gilpin as Guide

Pip Miller as Rudi

Geoffrey Morris as Race Official

Crispian Woodgate as Photographer

Alan Haywood as Studio Manager

Harry Hutchinson as Waiter

Anthony Sharp as Vicar

Pamela Binns as Bride

David Battley as Bridegroom

David Prowse as Wedding Guest

John Lynch as Wedding Guest

Leslie Anderson as Wedding Guest

Claire Davenport as Wedding Guest

Parnell McGarry as Wedding Guest

John Barrard as Wedding Guest

Desmond Stokes as Caterer

Derek Benfield as Man In Cafe

Valerie Bell as Waitress

Stanley Lebor as First Policeman

Dennis Chinnery as First Reporter

Robin John as Second Reporter

Roy Beck as Demonstrator (uncredited)