Guest Stars Ruth Bradley as DI Karen Voss Thusita Jayasundera as Neha Patel QC Ṣọpẹ́ Dìrísù as Fred Stephen Boxer as Dr. David Elster Matthew Marsh as Lord Dryden Phil Dunster as Tristan Neil D'Souza as Steve Covell Will Payne as Ferdinand Gregory Floy as Bishop Naveed Khan as Imam Yasmine Akram as Audrey Ballard Philip Barantini as Paul Yinka Awoni as Paul Morgan Sam Cassidy as Orange Eyes Francis Magee as Tex Richard Syms as Fred Murphy Simon Snashall as Billy Warren Sollars as Arresting Police Officer Liv Austen as Gloria