Having a ball

Jonathan Groff joins Doctor Who for a Regency adventure

SCI-FI Doctor Who Saturday, 6.45pm, BBC1

The latest series of Doctor Who has seen Ncuti Gatwa's Time Lord and Millie Gibson's Ruby embarking on ambitious adventures everywhere from a futuristic space station to the remote Welsh coast - but when it comes to picking their favourite episode of the bunch, both actors are in agreement that this week's Regency-themed caper, Rogue, is light years ahead.

'This is my favourite, for sure, says Gibson, 19. 'There are just so many great things that happen in this episode.

After the TARDIS touches down in 1813, the Doctor and Ruby are excited by the opportunity to live the full Bridgerton-style experience - although the two of them are very quickly taken in different directions.

'Millie and I didn't film together very much on this one, because we were in separate strands,' says Gatwa, 31. "The episode definitely captures the characters' cheekiness, because they both go off and have these separate scandals. It's a lot of fun.

When they learn that the Duchess (The Capture's Indira Varma) is hosting a grand ball at her country manor, the Doctor and Ruby talk their way into attending, and the Doctor encounters a charismatic stranger named Rogue, played by American actor Jonathan Groff.

MAN OF MYSTERY

'Rogue is an alien bounty hunter and a man of mystery, says Groff, 39. 'When we meet him, and he first meets the Doctor, we're in a Regency era - but Rogue is not necessarily who he appears to be.