Producer David O’Mahony said: “The Peter Cushing feature films of the 1960s were our stylistic inspiration - the lighter tone, the spirit of high adventure, the true Technicolor nature of the storytelling. We want all these adventures to have that bank holiday or Sunday afternoon feeling.

“We combined this with the brilliant cast of the BBC's anniversary special An Adventure in Space and Time, led by the legendary David Bradley. Working with such a wonderful cast and an exceptional creative team, we have created a time fracture leading to a separate universe... it might not be canon (or is it?), but it's going to be brilliant!

“I cannot tell you how excited I am to be taking charge of The First Doctor Unbound. Similarly to the Lost Stories range, making these stories unbound to the television continuity of Doctor Who gives us a wonderful creative freedom to explore characters, stories and styles.

“The hunger to create new stories and be inspired by various parts of the Whoniverse has driven so many wonderful Big Finish productions - to bring in this Doctor and set him on these adventures is like unearthing a treasure trove of potential and exciting tales.”

Writer L R Hay said: “When I was offered a First Doctor escapade in the style of a 1960s movie – wow! – my mind swirled with heists, spies, ancient epics, jousting knights and cheeky romps.

“That prompted a memory – chatting with a friend once about people from history we wish Doctor Who had covered. He mentioned medieval scholar and alchemist Roger Bacon. The stout, robed figure of Friar Bacon collided delightfully into Carry On star Peter Butterworth’s time-meddling trickster, the Monk, who I absolutely love.

“And who doesn’t want to see Ian, Barbara and Susan as literal knights in shining armour, riding out to protect the future as we know it?”

David Bradley (The Doctor)

Claudia Grant (Susan)

Jamie Glover (Ian)

Jemma Powell (Barbara)