Christian McKay

as Roger Penrose

as Lord Hesketh

as Mackelvore

as Earl Wilson

as Banker in Boston

as Roger Leonides

as Poker Friend

as Giles Newcombe

as Will Spencer

as Orson Welles

as John Watson

as Hamilton McMillan

as Cleopas

as Tim

as John's Dad

as Iorgu Ristea

as Christopher Soames

as David Rose

as Carsten

as Harry Elton