This is the cockpit section of XD875 at Morayvia in Scotland, not the Cosford Valiant. The Brooklands example XD816 is inside the new Aircraft Factory exhibition. Restored in overall silver colours, it is hiding in a corner and the inside is not open. I have been inside that one a long time ago, and I think it is pretty complete, but could be completely wrong as well.
This is the only photo I have of the interior of this one, and it was taken over 20 years ago.