Mark Gatiss

as George III

Wilf Scolding

as Prince of Wales

Debra Gillett

as Queen Charlotte

Sara Powell

as Lady Elizabeth Pembroke

Nadia Albina

as Fitzroy

Nicholas Bishop

as William Pitt

Jack Holden

as Greville

Amanda Hadingue

as Fox / Dr Pepys

David Hounslow

as Thurlow

Stephanie Jacob

as Dr Baker / Sherridan

Louise Jameson

as Dr Warren

Andrew Joshi

as Dundas

Adam Karim

as Fortnum

Harry Kershaw

as Duke of York

Billy Postlethwaite

as Braun

Adrian Scarborough

as Dr Willis

Jessica Temple

as Papandiek