Guest Stars Tom Goodman-Hill as Tom Blice Nick Hendrix as Andrew Shazad Latif as Mehdi Raboud Allen Leech as Pike Lydia Wilson as Princess Susannah, Duchess of Beaumont Jeany Spark as Camilla Eleanor Wyld as Lydia Galway Alex Macqueen as Special Agent Callett Andrew Knott as Brian Rory Kinnear as Prime Minister Michael Callow Rakie Ayola as Shelly Lindsay Duncan as Alex Cairns Donald Sumpter as Julian Hereford Anna Wilson-Jones as Jane Callow Alastair Mackenzie as Martin Johann Myers as Noel Helen Fospero as Lucinda Towne Sophie Kennedy Clark as Lauren McKell David as Son Amit Shah as Jack Jay Simpson as Rod Senseless Patrick Kennedy as Section Chief Walker Aymen Hamdouchi as Kieran Madeleine Bowyer as Sonia Chetna Pandya as Malaika Sophie Wu as Jamie Justin Edwards as Jon Julian Rivett as Damon Brown Jonathan Forbes as Browne Jeffry Wickham as Sir Harold Mount Wolf Wasserman as Spark Dominic Le Moignan as Nat Wallace-Dean