Comedian and writer Mark Gatiss has revealed that new Doctor Who showrunner Steven Moffat originally wanted an older actor to play the Time Lord than 26 year old Matt Smith, who was eventually chosen to replace David Tennant in the sought after role. Gatiss, who appeared in Doctor Who in a guest role as Lazarus in 2007 and has written episodes of the BBC1 drama, told the latest issue of the Radio Times that Moffat "really, really wanted to go older [for the new Time Lord] - but the right man walked through the door". He said of Smith: "In a perfect Doctor Who way he has an old, young face. He's 26 but he feels properly professorial."