The nearest to all white was the one that was at Bedford RAE. Had a rather stonkingly red rear fuse / empennage though!
The only other possible reason to be all white would be for a platform (A very early one) that was planned to be dropping Nukes, late 60’s paint jobs were all white.
I don’t think Nimrod dropped anything bigger than a Torp. did it?
I can’t help with the ident, but I find it very moving that the numbered wheel (4th photo) was handled by your father.
If nothing else, this alone is a very important find for you and your family.
Yes, I go to N.A.M a couple of times a year, good innit.
I wan’t to get a big set of steps and wash the Hastings though!
Then wax it with autoglym, and then apply an anti fouling lacquer to stop the algae coming back.