The actor told Mandrake, a news and gossip column for the Daily Telegraph that the actors who play the Time Lord keep getting “younger and younger”. In fact he went on to suggest how the show could move forward in the future:
While it’s a nice gesture, we think that we’ll stick with Matt Smith for now as he’s utterly brilliant in the role.
It does raise the question though, of whether the Doctor should be portrayed by a younger or older actor. Generally, the part has always gone to gentlemen over the age of thirty and before Matt Smith took the keys to the TARDIS in 2010 aged only twenty seven, the youngest actors to portray the part were Peter Davison and David Tennant who were twenty nine and thirty four respectively when they started their tenures. Paul McGann was already thirty six for his six weeks of filming as the Eighth Doctor.
However, it could be argued that the younger incarnations of the Doctor have always injected a fresh energy into the show and normally follow on from a previously older incumbent so sometimes it’s completely necessary.