I do some work in schools around that area, (Henry Mellish, River Leen, Ellis Guilford), I'll keep an eye for the missing two in case they've been dropped / thrown.
I know it's silly given all the ills in the world and all the real problems some people face on a day-by-day basis, but I can't help but feel sick to the stomach at the thought of those two records laying out there somewhere, getting damaged.
Post or Pm if you find them (or any others are found to be missing, but obviously if I see any 7" I'll contact you).
Best wishes, Dean.