Let's apply Occam's Razor
I've been on both sides of the User Acceptance Testing procedure and know that the only way to cover your ass is to sign off on nothing until both sides have done thorough testing well in advance of any product being shipped.
What's easier to believe:
- that the batch they tested before signing off on the consignments met the specifications and everything else didn't
- that Turkey did a switcheroo because reasons
- that the UK government got a procurement process badly wrong (they are so well known for their excellent procurement!)
Bear in mind that this is the same government that
- had a public policy of herd immunity and "take it on the chin"
- hired a noted eugenicist
- was slow to react, when it finally did as described in detail upthread
- claimed to have performed three hundred thousand and thirty four, nine hundred and seventy four thousand coronavirus tests despite that not being a number
- is led by a man so idiotic and arrogant that he went to a ward where they were treating covid patients and shook everyone's hand
- created a rod for its own back by talking about 100,000 tests per day without providing any of the surrounding procedures that makes those tests meaningful
- managed 100,000 tests for for one day using extremely creative accounting, and then subsequently failed to get close to 100,000 tests in any day since
- has presided over the second highest number of covid deaths in the world despite having a significant warning period AND inbuilt point-of-entry infrastructure
- contains most of the people who were involved in noted high points like awarding a ferry contract to a company with no ferries
Hmm I dunno man. This seems too complex to figure out. I am 110,034 348,000% sure it wasn't the UK government's procurement process though.