John Hurt

Character: Chris Mullin

Martin Shaw

Character: Ian McBride

Roger Allam

Character: Charles Tremayne

John Kavanagh

Character: Z

Robert Lang

Character: Detective Superintendant Ibison

Patrick Malahide

Character: Mike Mansfield

Bob Peck

Character: Chief Supt. Tom Meffen

Donal McCann

Character: N

Leslie Phillips

Character: Lord Chief Justice Lane

Terence Rigby

Character: Det. Supt. George Reade

David Ryall

Character: Dr. Frank Skuse

John Woodvine

Character: Tom Clarke

David Bamber

Character: David Mellor MP, Home Office

Ciarán Hinds

Character: Richard McIlkenny

Brid Brennan

Character: Sister of IRA man

John Lynch

Character: IRA man in cottage

Heather Chasen

Character: The Right Honourable Margaret Thatcher

Tony Doyle

Character: Richard Ferguson QC

James Berwick

Character: Joe Cahill

Brendan Cauldwell

Character: Callaghan

Julian Glover

Character: Igor Judge QC

Peter Gowen

Character: Eamon O'Connor

Ian McElhinney

Character: Sinn Fein leader

Gerard McSorley

Character: Paddy Mcllkenny

Sean McGinley

Character: A

Niall O'Brien

Character: Walker

Struan Rodger

Character: Ex-IRA man

Niall Tóibín

Character: Paddy Joe Hill

Donald Pickering

Character: Douglas Hurd, Foreign Secretary

Andy Bradford

Character:

David Howey

Character: Bob Clay MP

Diane Fletcher

Character: Gareth Peirce