Mark Elstob is an English actor known for his many stage performances, including Present Laughter, Nevilleβs Island, The Importance of Being Earnest, Sir Peter Hallβs Hamlet and Steven Berkoffβs Salome as well as for his year in Emmerdale as Andrew Fraser. He was chosen for the role of Number Six in Patrick MacGoohanβs The Prisoner after an extensive search by writer/director and producer Nicholas Briggs who describes Elstob as an actor who is brilliant and a powerful leading man.