He will be joined by Catherine Tate who is returning as Donna Noble.
Showrunner Russell T Davis teased the three episode maybe “a missing story, or a parallel world, or a dream, or a trick, or a flashback”.
He added: “The only thing I can confirm is that it’s going to be spectacular, as two of our greatest stars reunite for the battle of a lifetime.”
The Fifteenth Doctor, played by Ncuti, will then take control of the TARDIS, with his first episode airing over the festive period in 2023.
Doctor Who is available to watch on BBC iPlayer.