Guest Stars Niamh Walsh as Young Ethel Cripps Bill Paterson as John Hathaway Charles Dance as Roderick Burgess Laurie Kynaston as Alex Burgess Co Starring Ansu Kabia as Ruthven Sykes Corey Mylchreest as Adonis Douglas Russell as Guard #1 (Hugo) Christopher Colquhoun as Paul McGuire (62) Benjamin Evan Ainsworth as Alex Burgess (6) Martin Bishop as Neurologist Momo Yeung as Disciple #6 Jordan Long as Guard #10 (Fred) Madeleine Wilshire as Pushy Person #2 Siôn Alun Davies as Ozzie Amy Rockson as Margaret Kincaid Eugene Rangayah as Disciple #3 Gill Jordan as Disciple #4 Robert Grose as Disciple #1 Gus Gordon as Paul McGuire (18-42) Tracy Collier as Disciple #2 James Chuma Mbanefo as Guard #5 (Rogers) Simon Bundock as Alex Burgess Double (6) Andre Bullock as Pushy Person #3 Will Atiomo as Guard #4 (Maurice) Clare Buckingham as Sleep-Deprived Patient Roger Ajogbe as James Kincaid Jennifer Adab as Disciple #5 Stacy Abalogun as Nurse Edmunds Nicola Achilleas as Pushy Person #4 Louis Martin as Guard #3 (Noel) Alistair Bourne as Pushy Person #1 Naomi Cooper-Davis as Guard #11 (Ernie) Ione Brown as Sleepwalking Patient Johnny Palmiero as Guard #2 (Simon) Benedick Blythe as Alex Burgess (70) Keiran Flynn as Taxi Driver