This marks the first appearance of the First Doctor since 1983’s ‘The Five Doctors’, when he returned almost 20 years after originally regenerating.
The BBC has since confirmed Bradley is indeed playing the First Doctor, revealing that further casting announcements for the Christmas episode — which will feature a new Doctor — to be announced in the future.
With the series ten finalé of Doctor Who having aired, there remains just one episode with Peter Capaldi and Steven Moffat behind the acclaimed BBC show.
To make the Christmas special truly spectacular, the show runner has brought back a legendary character, as teased during the last episode’s cliffhanger.