Jim Broadbent character Lord Longford
Lindsay Duncan character Lady Elizabeth Longford
Samantha Morton character Myra Hindley
Andy Serkis character Ian Brady
Kate Miles character Rachel Pakenham
Alex Blake character Paddy Packenham
Sarah Crowden character Lady Tree
Robert Pugh character Harold Wilson
Anton Rodgers character Willie Whitelaw
Kika Markham character Governor Wing
Tam Dean Burn character Roy
Lee Boardman character Talk Show Host
Caroline Clegg character Longford's Secretary
Roy Barber character Father Kahle
Karen Spragg character Patricia Cairns
Karen Bayley character Holloway Prison Officer
Ian Connaughton character Journalist
David MacCreedy character Journalist
Richard Sinnott character Journalist
Charlotte West-Oram character Downing Street Secretary
Gordon Langford Rowe character Judge
Ron Meadows character Defence Barrister
Tina Malone character Elsie
Martina McClements character Home Office Secretary
C.P. Hallam character Fred Harrison
Pamela Cheshire character Cookham Wood Prisoner
Daniel Maley character Schoolboy
Ross Tomlinson character Schoolboy
