A new Doctor Who 50th anniversary adventure will bring together “all the surviving Doctors,” plus a number of their original companions, according to writer and director Nicholas Briggs.

Tom Baker, Peter Davison, Colin Baker, Sylvester McCoy and Paul McGann are explicitly confirmed for the 100-minute-long audio story The Light at the End, while Briggs has hinted that remaining Doctors Christopher Eccleston, David Tennant and incumbent Matt Smith are "behind the project", and that the Time Lord’s first three incarnations, originally played by the late William Hartnell, Patrick Troughton and Jon Pertwee, could also feature.

“We wanted to do a proper, fully-fledged multi-Doctor story for this very special occasion,” said Briggs, who will also executive produce and direct the story for Big Finish productions. “It’s wonderful that all the surviving Doctors threw themselves behind the project so enthusiastically. That’s not to say the first three Doctors don’t appear – we wanted to pay homage to the whole history of the classic series.”