The Prequel to The Doctor, The Widow and The Wardrobe
The Doctor: Only three flaws in this plan…
Doctor Who Season: S33.
Story Number: n/a, though prequel to 225.
It says something about the BBC’s commitment to Doctor Who that even a short sequence like this (intended as a teaser to be viewed online, which will usually mean a screen smaller than that of a televsion) is a cinematic widescreen event.