James Purefoy as Richard Spader

Rachel Shelley as Dr. Kirsty McCloud

Christopher Adamson as Leo Rook

Paul Brooke as Captain Campbell

Don Warrington as Prison Officer Ian Goslet

Christopher Dunne as Chief Prison Officer O'Neil

Bob Goody as Weevil

Pat Kelman as Spoons

Peter McCabe as Prison Officer Hopkins

Norman Mitchell as Brownlow

Howard Attfield as Sykes

Jason Round as Spitfield

Stuart Callaghan as Ship's Mate

Yolande Davis as Young Prison Officer

Sarah Wateridge as McCloud's Mother

Elizabeth Homewood as Young McCloud

Kenny Ingram as Guard

Neil Johnson as Guard

John Kearns as Guard

Rod Woodruff as Guard

Jake West as Voice on radio (voice)