Guest Stars James Murray as Prince Andrew Sebastian Blunt as Prince Edward Theo Fraser Steele as Timothy Laurence Lydia Leonard as Cherie Blair Jamie Parker as Robin Janvrin Lee Otway as Kez Wingfield Harry Anton as Trevor Rees-Jones Paul Sparkes as William's PPO Jack Cunningham-Nuttall as Fergus Boyd Isaac Rouse as Ollie Chadwyck-Healey Kirsty Lang voices Newsreader Tristan Gemmill as Dr Richard Thompson Tim Dutton as Michael Middleton Fred Ledoux as Thierry Rocher Oli Green as Finchey Lauren Koster as Kate's Friend - Hattie Ellie Shove as Kate's Friend - Imogen Yoann Blanc as Henri Paul Matilda Broadbridge as Pippa Middleton Charlie Beaven as Charlie Nelson Daniel Burt as James Middleton Christina Cole as Interviewer Lorcan Cranitch as Commissioner Stevens Tom Higgins as Fashion Show Commentator Crispin Letts as Crowthorne Forensics Expert Terence Vincent as Lord Mayor James Payton as Geography Lecturer Brian Yansen as Crowthorne Forensics Expert Cia Allan as Modern History Lecturer Yasmine Meaden as Olivia Bleasdale Jon Arne Arnseth as Crowthorne Forensics Expert Darren Hill as DCS Dave Douglas Andrew Lewis as Canon Ovenden