Guest Stars Noma Dumezweni as Captain Erisa Magambo Adam James as DI McMillan Daniel Kaluuya as Barclay David Ames as Nathan Lee Evans as Malcolm Ellen Thomas as Carmen Paul Kasey as Sorvin Victoria Alcock as Angela Ruari Mears as Praygat Glenn Doherty as Sgt. Dennison Reginald Tsiboe as Lou Keith Parry as Bus Driver James Layton as Sgt. Ian Jenner