Doctor Who Christmas special details revealed as Capaldi leaves

The Doctor Who Christmas special will see the Time Lord’s companion Bill Potts return, and will also feature a cameo performance from Sherlock co-creator Mark Gatiss.

The festive special, which will be the last time Peter Capaldi will be seen onscreen playing the Doctor, will be called Twice Upon A Time, it has been revealed during a cast panel at San Diego’s Comic Con. 0 Pearl Mackie will return as Bill Potts in the festive special

Details of Bill’s return have not been revealed, but Gatiss will play a First World War soldier known as The Captain.

During the 2017 series finale, fans were left wondering about Bill, played by Pearl Mackie, and they also saw the Doctor’s regeneration process begin after he was shot by a Mondasian Cyberman.

Viewers saw his flashback through previous incarnations as past companions played by Billie Piper, Jenna Coleman, Catherine Tate and John Barrowman were seen calling out his name.

Capaldi will be replaced by Broadchurch star Jodie Whittaker, the first woman to play the role.