Guest Stars Billy Jenkins as Prince Charles Pip Torrens as Tommy Lascelles Lizzy McInnerny as Bobo Macdonald Chris Gordon as Duke of Edinburgh's Valet James Hillier as Equerry (Buckingham Palace) Clive Francis as Lord Salisbury Daniel Ings as Mike Parker Nicholas Rowe as Jock Colville Harriet Walter as Clemmie Churchill Verity Russell as Young Princess Elizabeth Patrick Ryecart as Duke of Norfolk Rosalind Knight as Princess Alice Simon Chandler as Clement Attlee Patrick Drury as Lord Chamberlain Anna Madeley as Clarissa Eden Ronald Pickup as Archbishop of Canterbury John Woodvine as Archbishop of York Martin Bishop as King's Valet Michael Shelford as Duke of Windsor's Valet Ryan Early as Radio Producer / Television Producer James Woolley as Page (Marlborough House) Tony Guilfoyle as Bishop of Durham Cory Peterson as Party Guest John Surman as Cecil Mann, Crown Jeweler Clare Foster as Nancy Lewis Freddie Meredith as Secretary (Lambeth Palace)