Two of the Doctor’s travelling companions will leave the show in Doctor Who’s New Year’s Day special, Revolution of the Daleks, it has been confirmed.

The episode, written by Chris Chibnall, will see Graham, Ryan and Yaz left on Earth to deal with a Dalek plot, as the Doctor passes her time in a space prison. But the events of this adventure, and possibly the influence of Captain Jack Harkness, will lead Graham and Ryan, played by Bradley Walsh and Tosin Cole, to call an end to their time in the TARDIS after two full series.

This has been rumoured for a while, and it’s no surprise to see it confirmed now that filming on the 8-episode Series 13 has begun. That series, we now can be sure, will see Jodie Whittaker’s Doctor continue to travel time and space with Mandip Gill’s Yaz.

On the grandad and grandson pairing’s final episode, Walsh said: “It is very, very dramatic. It is very sad. It is quite sad and poignant is the word. You can expect a lot of poignancy from the episode.”

This news comes shortly after the first trailer for Revolution of the Daleks, which revealed new info about the plot and guest cast.