The Doctor travels in his trusty Tardis with three companions in this tale; Bradley, Phillip and Amber. Bradley takes the lead in the early part of the story as we see the Doctor struggling with his confused memories. Phillip seems more understanding, and gradually we see why the third companion Amber is no longer travelling with them.
The Tardis crew react to the events around them - or do they?
Tony Garner plays the "Two and a halfth Doctor". His resemblance to both Patrick Troughton and Jon Pertwee is something of a bonus, and certainly one of the reasons the story was written as it was. If you can't see the resemblance then wait until you see the regeneration scenes..!!!
The Doctor's assistant Bradley is played by one of the writers; David Clarke. As with Tony Garner he's a keen amateur actor, having been in many local productions in the Hove area over the years. So far the later part of the story has not been filmed, where his character "Bradley" is revealed to be none other then "Auriga", a renegade timelord engineer who has his own designs on the cosmos.
The part of an itinerant villager seen briefly in the Imberhorne scene is played by Arthur Harrod, another long time Dr Who fan and early leader of the BADWAS (Brighton Area Dr Who Appreciation Society). Like Stephen he was subjected to the indignity of wearing an awful wig for this brief role - hence his nickname "Wiggy" (that scene only).
Another place name (like Imberhorne, Uist etc) is used for this character. A member of the village resistance in the Imberhorne scene we do not know whether he is a TimeLord playing a role for the Doctor's memory, or merely a fiction?
Ian Edmond has now forgiven us (we think) for his character's name. "Ralib" is an anagram of "Blair" That's where the similarity ends! We first met Ian as a result of him standing at a bus-stop in Brighton wearing a dalek t-shirt (that's Ian, not the bus-stop) and Ashley's usual brand of cheek meant he had to strike up a conversation with this hitherto stranger. Ian now works at DVC run by David from the team, and is in charge of things technical in the world on video-editing on PCs.