Bill, my friend, I post here your long awaited cockpit pics from the Bomber Command Museum of Canada in Nanton. Now, interestingly, I just learned today that the restored Bollingbroke at this museum has been painted up in the scheme of your Barry Davidson! The only thing I noted is that the serial number painted on the museum rig is R3662, not R8662 as stated in your first post. Anyway, I'll start with the pit shots and if you want more pics I have lots more. Just shout if you want me to post them.
Now there are two Blenheim pits at this museum, one in a cut off nose and another on the full aircraft, so you'll see two versions with some common features and some different. The full aircraft pit also was unfortunately difficult to photograph as it was only accessible from the port side, the hatch was immobile and only cracked open about 4 inches, and the seat had a dummy pilot in it. All the pics, for both pits, were through the glass which is always tricky. Though I know little about this aircraft, it appears to me that these pits are not fully restored as I would have expected a lot more wiring and other miscellaneous stuff in there. However, at 1/72, I suspect you're limited anyway in what you'll be able to stick in there. Anyway, here goes.
Scraped the wall of the port side to hollow a bit for some stringers.
Filled the hole at the leading edge of the wing inside to flatten to the side of the pilot seat. Couple of sheets of styrene and then the gaps at the sides with red bondo. Don't want to fill the whole with bondo cuz it gets HOT and will muck up the outside under it.
May do the same with the nose area.
Working on the wall between pilot and navigator. And by the ref photos, no real floor to peak of under his feet! that I thought was there.