The BBC have released various pieces of information regarding the new series of Doctor Who, not least of which is the airdate – 12 April 2025. The Episode Titles are:
The Robot Revolution: Written by Russell T Davies, directed by Peter Hoar
Lux: Written by Russell T Davies, directed by Amanda Brotchie
The Well: Written by Russell T Davies & Sharma Angel Walfall, directed by Amanda Brotchie
Lucky Day: Written by Pete McTighe, directed by Peter Hoar
The Story & the Engine: Written by Inua Ellams, directed by Makalla McPherson
The Interstellar Song Contest: Written by Juno Dawson, directed by Ben A. Williams
Wish World: Written by Russell T Davies, directed by Alex Sanjiv Pillai
The Reality War: Written by Russell T Davies, directed by Alex Sanjiv Pillai
Episode 4 – Lucky Day – is the one of interest. It is a Doctor-lite episode featuring Ruby Sunday, UNIT and, of course, Kate Stewart. This is a Doctor-lite episode for a reason – throughout the series, the Doctor is trying to get new companion, Belinda, home. According to Russell T Davies in “Doctor Who Magazine”:
“Of course it means keeping the TARDIS away from modern-day Earth. Normally, I think you should keep revisiting the present day – it’s essential. So it’s been a real challenge to avoid it for an entire series.”
Episode 4 with this little title teaser is confirmed as the UNIT episode:

Barring delays, Jemma’s episode should air on 3 May 2025.