In response to House...
If this is to be BBC World News's studio (or
STUDIO C), then I'm betting it will only be used for World News bulletins and Business News (from the small desk), and that the flexible studio (STUDIO B) that we've heard of will be used for GMT, Impact, The Hub, World News Today and Newsnight during the week and Sunday Politics & Andrew Marr on Sunday.
Presumably unless the News Channel is to share its studio with the main bulletins then the Virtual Reality Studio (STUDIO A) will either be where the main BBC One bulletins come from all of the time, or where the News Channel goes for the rehearsal and bulletin times. (Presumably the Virtual Reality Studio would be a big green screen room?)
It would also make sense for the BBC London Studio to be shared with other outputs, as it clearly will not get much use if it is exclusively for BBC London.
The print edition has a schematic which shows the following:
Studio A: Virtual Reality
Studio B (Big Flexible): Newsnight, World News, Marr
Studio C: World News
Studio D: BBC London
Studio E: News Channel
E is in the lower ground floor, with the newsroom view, the rest are in the sub-basement.
The other thing that bothers me about this is that if the studio we've seen is in the sub basement, then it wont have a view of the main newsroom. Or there could be another large office space that takes up the sub-basement level.
OR... the final option... this is not one of the four studios in the sub basement, and in fact is on the same level as
Studio E, with a view out onto the newsroom.