Guest Stars Tom Beard as Bingham Ben Bailey Smith as Tyrone Jane Riley as Sam's Mother Maddy Griffiths as Young Sam Souad Faress as Mrs Sidwa Indira Varma as Natalie Thorpe Uriel Emil as Hasan Moussa David Sterne as Dave Ryder Dhafer L'Abidine as Bernard Faroux Peter Vollebregt as Horst Goebel Helen Kennedy as Lianne Wells Neil Finnighan as Military Man Lin Blakley as Grandma Freeman Elly Fairman as Emma Freeman Scarlet Margaroli as Emma's Daughter