Idris Elba John Luther Actor Ruth Wilson Alice Morgan Actor Dermot Crowley Martin Schenk Actor Warren Brown Justin Ripley Actor Paul McGann Mark North Actor Nikki Amuka-Bird Erin Gray Actor Michael Smiley Benny Silver Actor Aimee-Ffion Edwards Jenny Jones Actor Kierston Wareing Caroline Jones Actor Pam Ferris Baba Actor David Dawson Toby Kent Actor Lee Ingleby Cameron Pell Guest Star Alan Williams Frank Hodge Guest Star Brett Fancy Paul Hoby Guest Star John Albasiny Andrei Kolchak Guest Star Sam Miller Director Neil Cross Writer