Russell T. Davies has promised the 'Doctor Who' Christmas special will be a total "reinvention".

Russell T Davies promises Doctor Who 'reinvention' in Christmas special

Russell T Davies promises Doctor Who 'reinvention' in Christmas special

The upcoming festive episode 'The Church on Ruby Road' will see Ncuti Gatwa fully in charge as the Fifteenth Doctor alongside Millie Gibson as his new companion Ruby Sunday, and while the showrunner is keeping details close to his chest, he has offered a hint of what's to come.

He told SFX magazine: "It's completely a reinvention. Reinvention of the show, brand new, but not a reboot, it's the same old show, everything starts again, everything's seen through the eyes of Ruby Sunday and it's that lovely feeling of here we go, a new era beginning."

Russell teased that the Christmas Day (25.12.23) episode "kind of goes into territory we've never touched before".

He added: "In many ways that's more… fresher than special two. We've never done this before."

The episode follows the conclusion of the 60th anniversary specials when the third episode 'The Giggle' airs on BBC One this Saturday (09.12.23), which will mark the final appearance returning star David Tennant.

The AGE-year-old actor - who played the Doctor between 2006 and 2010 - has been back for the anniversary alongside Catherine Tate as his companion Donna Noble.

Ncuti recently admitted that David's return was “a nice little lead-in” before him because he was “a great inspiration” to him as kid dreaming of working as an actor growing up in Scotland.

He told The Big Issue magazine: "A nice little lead-in for me! It feels like it’s come full circle – because David was my Doctor and such a great inspiration to me as an actor.

“I would have been 13 – a pivotal time. And firstly, he’s Scottish. Plus he was so charismatic and fun – I mean all the Doctors have been fun, all the way back.

“Well, I don’t know if you can say that about William Hartnell. Maybe he wasn’t fun. But David had such a Scottish almost feral-ness to him, which is what I liked. I felt an affinity to that. So for him, of all people, to be handing the baton over – it just feels really surreal.”