Mary Millington
— Sgt. Lucy Sheridan
Glynn Edwards
— Chief Superintendent Holbourne
Gavin Campbell
— Inspector Harry Morgan
Windsor Davies
— Assistant Police Commissioner
Derren Nesbitt
— Jeremy
Alan Lake
— Harry Dougan
Dudley Sutton
— Hern
Sandra Dorne
— Dougan's Secretary
Penny Spencer
— W.P.C. Andrews
Ballard Berkeley
— Trainer
Kenny Lynch
— Police Doctor
Suzy Mandel
— Lena
Susie Silvey
— W.P.C. Taylor
Erika von Jump
— Foxy the Masseuse (uncredited)
Cosey Fanni Tutti
— Extra (uncredited)
Nigel Gregory
— Expert 1
Tom McCabe
— Expert 2
Pat Gorman
— Expert 3
Pat Astley
— Doreen
Gordon Salkilld
— Police Photographer
John M. East
— Mediaman
Ronald Flanagan
— Wilson
Tony Kenyon
— Dolby