The guest cast for Doctor Who: The Light at the End includes Oliver Hume as an early incarnation of Straxus (a Time Lord who has appeared several times before in the audio dramas, most recently in Dark Eyes), John Dorney as Bob Dovie, and Nicholas Briggs, who plays the mysterious Vess.

“And that’s not all,” reveals producer David Richardson. “There’s a whole host of small cameo appearances by much-loved Doctor Who stars. We’ve called these moments ‘little kisses to the past’.”

Briefly dropping in will be (deep breath) William Russell as Ian, Carole Ann Ford as Susan, Maureen O’Brien as Vicki, Peter Purves as Steven, Jean Marsh as Sara, Anneke Wills as Polly, Frazer Hines as Jamie, Wendy Padbury as Zoe, Katy Manning as Jo, Janet Fielding as Tegan and Mark Strickson as Turlough!

“It’s a mighty cast list,” says writer, director and executive producer Nicholas Briggs, “and it was a huge logistical challenge to get everyone to the studio to record this new material for us. Though we wanted to include every surviving actor from the Doctor’s past, it wasn’t possible – but we did manage to get nearly everyone!”

Doctor Who: The Light at the End is available for pre-order now, as both a 5-disc limited collectors' edition and a 2-disc standard edition.