Sorry I should have explained. I'm trying to gauge the date of manufacture, and whether John Lewis merely bought in--say--5000 units back in March, or wether they've regularly been receiving fresh stock ever week or so.
I ask because I'd like a unit manufactured recently, because I believe some hiccups in the manufacturing process have lead to a few duff screens (as you've encountered yourself).
Anyway, this is all moot now because Apple has decided to dispatch my order after all -- an order placed about two weeks go now.