Writer Jonathan Morris said: “If you think of Colony in Space and Frontier in Space as the first two thirds of a trilogy... then here's the final third. It's Doctor Who doing 1970s 'hard-SF'; all about the politics of future Earth colonies (and how they parallel the politics of today). A densely-plotted thriller!”

Producer Heather Challands added: “We're back with another six-parter, a wonderful homage to the original Third Doctor era, and I'm always really excited with what new stories we can tell with this nostalgic format. This story is very political, with growing tensions, growing rebellion and growing telepathic powers. Jonny has done a top-notch job with his script and it's just classic sci-fi.”

Director and script editor Nick Briggs said: “Tim and Sadie are on top form here, with Sadie sounding uncannily more and more like her mum. We’ve got a great cast who really bonded in studio, and our main villain, Zyla Kalstein, is a truly chilling piece of voice work from the BAFTA Award-winning Juliet Aubrey. She’s terrifying!”

Juliet Aubrey added: “I’ve worked with Nick before, I think he’s a fantastic director. I really like playing villains, and Doctor Who’s such good fun. When I read the script, I absolutely loved it, because it was so clear on what we’re doing to our planet at the moment. There are references to how people on Earth have messed it up so much so there is nothing left.”

Actor Tim Treloar said: “Most of the Third Doctor’s adventures are set on Earth, and Revolution in Space is set on Earth in a way, in that it's the descendants of Earth people who went to the asteroid first and have now become natives.

“In a similar vein to the American revolution, they seek independence and autonomy. I enjoy that bolshiness – masses against the classes! This script written by Jonny Morris is wonderful, the dialogue’s fantastic.”

Sadie Miller added: “Doing a six-part story feels cinematic. You really get to go on a much deeper journey with all the characters and there’s so much more room to feel all those emotional corners, which is exciting. I love that we had a much bigger cast than usual. There’s a lot of action sequences, and you don’t quite know where it’s going to end up!”

Sadie Miller, Jonathan Morris, Tim Treloar

Tim Treloar, Sadie Miller, Juliet Aubrey

Jonathan Morris, Robert Whitelock, Tom Alexander, Harry Myers, Richard James, David Dobson, Charlie Norfolk, Barry Aird, Tim Treloar, Anna Crichlow, Sadie Miller