Range producer Dan Hall said:
It’s a real thrill to be bringing such an iconic Doctor Who episode back to life. Without the events established in The Tenth Planet episode 4, there would be no Doctor Who as we know it!The story was originally released on VHS in 2000 and featured a reconstruction of the missing episode using existing telesnaps from the episode; it is expected that this version will also be included on the DVD as an extra.
The missing episode marked the end of the First Doctor's adventures, and introduced the revolutionary concept of the appearance of the Doctor changing - a key element of the series mythos that has enabled the series to now celebrate its fiftieth year! Though the 'regeneration' itself survived, along with a few clips, the story itself has been 'lost' from the BBC archives since the 1970s.
A selection of stills of the new animation in progress can be seen via a gallery on BBC Worldwide's official Doctor Who 50th Anniversay website. There is also a showreel available to watch on the Planet 55 website featuring a number of their concepts - including the First Doctor stalked in the snow, a scene inspired by The Tenth Planet.