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