Thanks again Ross, your input is much appreciated.
So, mystery No. 1 equates to a B (I) 12 column (with auto pilot cut-out switch, not p-t-t as I’d assumed).
How about mysteries Nos. 2 and 3 then?
No. 2 looks like a B (I) 8 grip, but it has a brake lever.
No. 3 looks much the same, but with the addition of an extra bracket containing a switch for an F95 camera adjacent to the Dive Brake switch on the head of the control column. Plus, of course, it has a brake lever, which again seems to rule out B (I) 8.
Are they B (I) 6 versions, maybe? :confused:
Blimey, I should have stuck to collecting Lancaster stuff, you can’t go wrong!