Guest Stars Richard Durden as Conor Hodgson Daniel Weyman as Max Thorndyke Julia Haworth as Rosie Chamberlain Clare Higgins as Professor Katherine Dukes Ben Bailey Smith as Lieutenant Colonel Ben Carmichael William Ash as Major Mark Sealy Tina Chiang as Simone Taylor Ash Tandon as DI Karl Guyatt Graham Turner as Arthur Simpson Will Stevens as Private John Sealy Caroline Lee-Johnson as Sandra Gibbs Michael Simkins as AC Harry Lennox Daniel Parr as Edmund 'Fish' Fishbourne
