© BBC
At 27, Smith is the youngest actor to take on the role and replaces David Tennant, who brought his four-year run as Doctor Who to an end on New Year's Day.
The new 13-part series is being led by TV writer Steven Moffat after Russell T Davies stood down as the show's producer and chief writer.
Antony Wainer, of The Doctor Who Appreciation Society said Smith brought a new eccentricity to the role. "He brings back genuine madness to the role of the Doctor - Matt's Doctor is bonkers," he said.
