Battlefield

[warmcanofcoke]

Battlefield Interior 09.jpg

Yes.
This a set.
I believe in Battlefield image 9 above we see through the holes, however the cyclorama has a fold of material - well basically curtains in the background behind the set. Also there is a support strut seen in the top center roundel hole. (Also another strut can be seen in the roundel by the Doctor's shoulder.)

[warmcanofcoke]

Interestingly, I just spotted this segment from the Battlefield plans (Not sure where I got them from anymore).

But it looks like they at least intended to reuse the existing components for the console room (although it doesn't mention the console, which we do know still survives today).

It has some measurements too.  Apologies for not posting this sooner, I didn't realise I hdad it

Thank you for posting this. This tickles my fancy.