Ncuti Gatwa will be joined by Johannes Radebe and Shirley Ballas for an episode of ‘Doctor Who’.

Ncuti Gatwa will be joined by Johannes Radebe and Shirley Ballas for an episode of Doctor Who

Ncuti Gatwa will be joined by Johannes Radebe and Shirley Ballas for an episode of Doctor Who

The second episode - which is called ‘The Devil’s Chord’ - will see the Time Lord, played by Ncuti, 31, and his sidekick Ruby Sunday (Millie Gibson, 19) cross paths and bust out their best movies with the ‘Strictly Come Dancing’ stars.

During a Q and A session about the episode - which will air after the ‘Space Babies’ episode - Millie said: “I remembered reading ‘The Devil’s Chord’ and getting the biggest goosebumps at the end.

“It just seems like this incredible episode, and I was like, ‘Wait, we dance with Johannes and Shirley from ‘Strictly’? Ok. Next page.’

“It’s just like the craziest thing. And it was crazy to film it.

“And, I mean, that day we were dancing with them, we had a ball, We had so much fun.”

During the episode, the pair travel back in time to the 1960’s in what is a fun nod to The Beatles.

Ncuti added: “I loved ‘The Devil’s Chord’ episode so much. [I] loved reading it and then working and shooting it.

“We had an amazing choreographer who whipped us into shape with such kindness. He made the choreography accessible, so we had a lot of help and a lot of fun.”

Millie was previously rumoured to be making an earlier-than-expected exit from the BBC programme and would be replaced by ‘Andor’ actress Varada Sethu as the Doctor’s new companion, but showrunner Russell T. Davies insisted the story was nothing but hearsay.

He told SFX Magazine: “[Millie is] not leaving. Not at all.

“We were ordered for two years of a series off Disney, and we're delivering two years, and the Ruby Sunday story literally spans those two years.

“We are planning [to] shoot the [series] finale in which Ruby has the most magnificent scenes, and Millie, it's some of [her] most challenging material yet, isn't it? It will all make sense once you see it play out.”