Holliday Grainger DI Rachel Carey Actor Killian Scott Noah Pierson Actor Ron Perlman Frank Napier Actor Ben Miles Danny Hart Actor Lia Williams Gemma Garland Actor Ginny Holder DI Nadia Latif Actor Nigel Lindsay DCI Tom Kendricks Actor Hugh Quarshie Commissioner Cameron Yates Actor Andrew Buchan Deputy Commissioner Julian Talbot Actor Tessa Wong DC Chloe Tan Actor Joe Dempsie James Whitlock Actor Amy Conachan DC Erin Foster Actor Beruce Khan DC Lyons Actor Frederick Schmidt CTSFO Commander George Actor Georgina Hellier DC Jacobs Actor Barry Aird Jean-Paul Actor Kenneth Collard Wizard Actor Linus Roache Colonel Figgis Actor Jonathan Aris Dr Neuman Actor Mark Field Lieutenant Chivers Actor Barry Calvert Major Greggs Actor Alastair Natkiel Corporal Goodison Actor Guy Clark DC Squibbs Actor Leah MacRae DC Bailey Actor Maggie Service Mary Actor Derek Ritchie Producer, Executive Producer Ben Chanan Writer, Executive Producer David Heyman Executive Producer Rosie Alison Executive Producer Sue Gibbs Executive Producer Tom Coan Executive Producer Johnny Allan Director