Miriam Margolyes has reportedly been cast in 'Doctor Who'.

Miriam Margolyes is coming to Doctor Who

Miriam Margolyes is coming to Doctor Who

The 'Harry Potter' actress is said to be joining the BBC's sci-fi show as part of the 60th anniversary celebrations next year, and she will appear opposite David Tennant when he returns to the TARDIS.

An insider told The Sun newspaper's TVBiz column: "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."

According to the report, Miriam was a "natural choice" for the role.

The source added: "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.

"And at the grand age of 81, her career is enjoying something of a renaissance at the moment."

Last month, Jodie Whittaker made her final appearance as the Thirteenth Doctor in BBC Centenary Special 'The Power of the Doctor', and viewers were left shocked and surprised when she regenerated into a familiar face, that of Tennant's Tenth Doctor.

Returning showrunner Russell T Davies has now revealed that this incarnation of the Time Lord is actually the Fourteenth Doctor and he has teased that fans can expect "plenty more surprises" in the three specials coming in November 2023 to mark the sci-fi show's 60th anniversary before Ncuti Gatwa becomes the Fifteenth Doctor.

He 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!"