The Doctor From Gallifrey 

Some great casting news for series 7 was announced today. Dame Diana Rigg will star in the Mark Gatiss penned episode, along with her daughter Rachel Stirling, the first time they have worked together. 

Character details are being kept hush hush but they will recreate their off-screen relationship and play a mother and daughter. The press release states that Diana Rigg plays a Yorkshire local, which implies Rachel Stirling will to and that the episode will be set in Yorkshire. It's also going to be a historical episode but that's all we really know at the moment. 

Diana Rigg is best known for her 60s roles as Emma Peel in The Avengers and as a Bond girl in On Her Majesty's Secret Service. Speaking about the role she said: "The first time Rachie and I will be working together is on an episode of “Doctor Who” specially written for us by Mark Gatiss. How lucky is that?" 

Rachel Stirling has most recently been seen in Snow White and the Huntsman. She said: "What joy. I am looking forward to the madness of Doctor Who enormously. Mark Gatiss has written a gift of a script and an on-screen relationship between Ma and I that is truly delicious. We have never before worked together because the offers have not been tempting, but when such a funny and original script comes through you know the time has come." 

And of course Stephen Moffat had to have the last word: "Dame Diana Rigg, Rachael Stirling and a Mark Gatiss script - a combination of talents you could only get in Doctor Who! Frankly, I'm terrified already!"

For everything we know so far about Series 7 click here.

[Source: BBC Doctor Who]