Guest Stars Nana Mensah as Billie Appiah Tim Delap as Byron Penny Downie as Frances Munning Kenichiro Thomson as Martin Adam Silver as Howard Pearl Mackie as Alysse Celia Imrie as Margaret "Meg" Roylin Georgie Henley as Pensy Graham Miller as Neil Barrow Jess Chanliau as Ronnie Buckhurst Miguel Sandoval as Miguel Ganon Richard Dillane as Tom Libby Sandy Amon-Schwartz as Sandy Michael McKean as President William Rayburn Bhav Joshi as Anu Kapoor David Bark-Jones as Alistair Kemper-Waithe Pandora Colin as Lydia Trowbridge Joey Eden as Dan John Schwab as Roger Post Maggie Daniels as Louisa Stephanie Mae as Stephanie Alan Mahon as Warren Paul Tylak as Malakov Ian Hughes as Dr. Kesten Nancy Carroll as Philippa Pemberton Kehinde Cardoso as Paramedic Martina Avogadri as French Reporter Eric Underwood as Bobby Modello Jammy Kasongo as Troy Brewer Allen Watts as Ryan Nina Bowers as Paramedic Waseem Mirza as English Reporter Victoria Blunt as Paramedic Paula Kay as Nurse Belle James Payton as Brayer Mattia Sonnino as Nurse Marco Sue Appleby as Anesthetist Carol Walton as Nurse Miriam Lucia as Mills Shelley Draper as Nurse Sarah Mo Sesay as Speyer George Potts as Lon Hammond Akbar Kurtha as Ambassador Desai
