With David Tennant and Catherine Tate reprising their roles for the 60th anniversary, it had already been confirmed that they will appear in three special episodes, set to air in November 2023.
The Sun is tonight reporting that Miriam Margolyes is to appear in the 60th anniversary specials, in an unknown role. The BBC declined to comment when approached by TV Zone.
A source told The Sun: "With an acting career almost as old as Doctor Who itself, it’s a surprise to think she hasn’t already featured in an episode over the past six decades. But that only makes her even more of a prestige addition to a cast which already features Neil Patrick Harris and Catherine Tate, who returns to play the Doctor’s assistant Donna Noble...
"The show’s creators felt that she was such a great character in real life that she was a natural choice to play the character she will have on the sci-fi show, which the BBC are keeping a closely guarded secret."
The next Doctor, played by Ncuti Gatwa, will then take control of the TARDIS, with his first episode airing over the festive period in 2023.
Talking about the future, Russell T Davies, Showrunner said: “If you thought the appearance of David Tennant was a shock, we’ve got plenty more surprises on the way! The path to Ncuti’s Fifteenth Doctor is laden with mystery, horror, robots, puppets, danger and fun! And how is it connected to the return of the wonderful Donna Noble? How, what, why? We’re giving you a year to speculate, and then all hell lets loose!”
The three special episodes will transmit in November 2023 as Doctor Who celebrates its 60th anniversary.