John Thaw as Det. Insp. Jack Regan

Dennis Waterman as Det. Sgt. George Carter

Barry Foster as Elliott McQueen

Ian Bannen as Charles Baker, MP

Colin Welland as Frank Chadwick

Diane Keen as Bianca Hamilton

Lynda Bellingham as Janice Wyatt

Brian Glover as Mac

Michael Coles as Johnson

Joe Melia as Ronnie Brent

Morris Perry as Flying Squad Cdr. Maynon

Paul Angelis as Secret Serviceman

Nick Brimble as D.S. Burtonshaw

John Alkin as D.S. Tom Daniels

Bernard Kay as Matthews

Antony Brown as Murder Inquiry Supt.

Antony Scott as Johnson's Henchman

Nadim Sawalha as Chairman of the Oil Producers Conference

Michael Latimer as PPS

Johnny Shannon as Scotland Yard Duty Sergeant

Peter Childs as Murder Inquiry Detective

Sally Osborne as Sally

John Kane as SB Sergeant

Peggy Aitchison as Carter's Neighbour

John Oxley as Chadwick's Deputy Editor

Hal Jeayes as Manservant

Matthew Long as Traffic Sergeant

Anthony Woodruff as Coroner

Leonard Kavanagh as Pathologist

Chris Dillinger as Johnson's Henchman

Joyce Grant as McQueen's Secretary

Susan Skipper as Chadwick's Secretary

David Corti as Young Boy

Alan Mitchell as Detective Inspector