Guest Stars Richard Riddell as Tom Fenton Paul Ready as Rob Macdonald Nicholas Gleaves as Roger Penhaligon Nick Robinson as Himself Anjli Mohindra as Nadia Ali Bella Padden as Ella Budd Martha Kearney as Herself Justin Webb as Himself Matthew Stagg as Charlie Budd Sarah Malin as Nadia's Solicitor Rosie Jones as Police Officer David Westhead as Prime Minister John Vosler Daniel Moore as SO15 Officer Mishal Husain as Herself Laura Kuenssberg as Herself Julian Firth as Rob's Solicitor Bailey Patrick as SO15 Officer Tina Chiang as Surgical Administrator Gary Pillai as Security Manager Annita McVeigh as Herself Simon McCoy as Himself Jo Jasani as Reporter Sheyi Akindele as Reporter Seamus Casey as Trauma Surgeon