Whose hand is steering the Tardis?
The frightening truth: an unqualified driver is at the helm:
To explain. I have a cousin who works here:
And the weekend before last, he very kindly took a group of relatives around the studios, including me. I can't say much about what we saw, but we were allowed to take pictures of the interior of the Tardis itself (positioned right next to a square in ancient Athens for the forthcoming Midsummer Night's Dream).
It's a really big space. The set has the full 360° walls, which can be opened up if necessary, but fundamentally it's a very large circular room on several levels (and scary drops between them). The lights were not on, so all pictures are illustrated by my iPhone flash (apart from the first two in this post, which were taken more professionally by an uncle). But here's a view of the console from the gallery, my mother and most of an aunt dimly visible behind:
Down below the console is a further floor level, with the Tardis innards spilling out:
I was fascinated by the console itself, which is as elaborate as you would hope: