Mary Millington as Sgt. Lucy Sheridan

Glynn Edwards as Chief Superintendent Holbourne

Gavin Campbell as Inspector Harry Morgan

Windsor Davies as Assistant Police Commissioner

Derren Nesbitt as Jeremy

Alan Lake as Harry Dougan

Dudley Sutton as Hern

Sandra Dorne as Dougan's Secretary

Penny Spencer as W.P.C. Andrews

Ballard Berkeley as Trainer

Kenny Lynch as Police Doctor

Suzy Mandel as Lena

Susie Silvey as W.P.C. Taylor

Erika von Jump as Foxy the Masseuse (uncredited)

Cosey Fanni Tutti as Extra (uncredited)

Nigel Gregory as Expert 1

Tom McCabe as Expert 2

Pat Gorman as Expert 3

Pat Astley as Doreen

Gordon Salkilld as Police Photographer

John M. East as Mediaman

Ronald Flanagan as Wilson

Tony Kenyon as Dolby