Guest Stars Charles Edwards as Martin Charteris David Rintoul as Michael Adeane Penny Downie as Duchess of Glouchester Lorraine Ashbourne as Barbara Castle Mark Dexter as Tony Benn Michael Thomas as Duke of Gloucester Finn Elliot as Young Prince Philip Leonie Benesch as Princess Cecille Aden Gillett as Richard Crossman Colin Morgan as John Armstrong Miltos Yerolemou as Chronos Nigel Whitmey as Marquis Childs Robert Wilfort as Documentary Director Chris Kyriacou as Police Chief Georgina Strawson as Buckingham Palace Maid Tony Bell as Guardian Editor Jacob Shephard as Page Colin Stinton as Lawrence E. Spivak Ben Stylianou as Pawnbroker Michael Parker as Documentary Narrator