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