Russell Lewis Creator, Executive Producer, Writer John Simm DS Roy Grace Actor Richie Campbell DS Glen Branson Actor Rakie Ayola ACC Alison Vosper Actor Adrian Rawlins Harry Frame Actor Laura Elphinstone DS Bella Moy Actor Brad Morrison DC Nick Nicholl Actor Alexander Cobb Kevin Spinella Actor Craig Parkinson DS Norman Potting Actor Zoe Tapper Cleo Morey Actor Clare Calbraith Sandy Actor Arthur Darvill Kit Bishop , Jecks Actor Thomas Christian Darren Wardle Actor Silas Carson Richard Charwell QC Actor William Andrews Joe Tindall Actor Carolina Valdés Nadiuska De Sancha Actor Ben Lambert Barty Chancellor Actor Margot Leicester Margot Balkwill Actor Brian Pettifer Hector Hegarty Actor Amy Conachan Mo Actor Amelia Armande Lorna Actor Andrew O'Connor Executive Producer Brian Kelly Director Patrick Schweitzer Executive Producer Peter James Executive Producer Paul Sandler Executive Producer Kate Saxon Director John Alexander Director Matthew Slater Original Music Kiaran Murray-Smith Producer Henrik Georgsson Director