Producer, director and script editor Gary Russell said: "The Time Tunnel is one of those great Sixties science-fiction shows that ended too soon and without resolution. Ever since I was six years old, I used to think, what happened to poor Doug and Tony? To finally have the opportunity to restart Project Tic-Toc's computer spools, flashing lights and boot up the Tunnel again - and along the way maybe finally get an answer to Doug and Tony's fate - was simply too good an opportunity to pass up on.

"We've had so much support and encouragement too from Legendary and Synthesis - who look after the Irwin Allen properties with so much love and respect - and for that I'm really grateful. They gave us the chance to bring The Time Tunnel into the twenty-first century with a bang."

On making her Big Finish debut, Sandra Dickinson said: "It’s a part to die for! The woman I'm playing has a rich history of being a very good human being, a loving, caring person, and is a tough cookie, so it was really fun to play, and to use the New York accent, which has been in my mind for a long time.

"The 1960s was an amazing time. It's so apt at the moment to be talking about the LGBTQ rights movement. It's really nice to hear how it all started off in New York. And my dear son-in-law, David Tennant, has been standing up for them, bless him! So it's a great one to have done."

The first episode’s writer Mark B Oliver said: "I did a lot of research into the Stonewall Uprising, and what I found most fascinating were the oral histories that people have recorded over the years. These are people that were there and experienced what exactly happened. And the common thread is that they agreed to disagree about the exact details!"

The second episode is scripted by Lisa McMullin, who said: "I’ve had a real hankering for quite a while to tell a pure historical story, so this was such a treat. It was really enjoyable telling the story of Joan of Arc. I had loads of interest in her before, and I'm always fascinated by how religion can be a real comforter to people but is also used to justify so much horror."

And, finale writer Gary Hopkins said: "At the time we were discussing what we might want to do with this episode, I was reading a fantastic book called The Darks and Bounds of a Failing World, all about the tragedy of the Titanic and the Edwardian era. So it all fell into place at just the right time. I'd grown up watching various representations of the Titanic through film and television, but I always wanted to go back to the factual origin."

Rachel Lincoln and Andrew Wincott

Sandra Dickinson and John Schwab

Conrad Westmaas, Sanjay Lago and Mark Elstob

Kim Tatum, Sandra Dickinson, John Schwab, Flavie Ravenhill, Safiyya Ingar, Jay Reum, Rachel Handshaw

Safiyya Ingar

Rachel Lincoln