Re: "The timing is also unfortunate for the company ..."
There was no hysteria, the safety concerns with the AZ jab were well-founded, despite the UK's initial chest-thumping brexity attacks on the various EU health bodies that first raised concerns.
The UK also removed the AZ jab as an option for younger recipients, and then conducted all its booster campaigns with mRNA vaccines such as the Biontech/Pfizer jab. The UK essentially accepted the risks and moved to safer vaccines, though this caused delays in the UK vaccination programme. It may have had a better chance of getting more supplies of the Biontech jab, had it not selfishly acted to block AZ vaccine shipments to the EU early on via a preference contract, which later backfired spectacularly having burned all goodwill with the EU when it need their vaccine.
The AZ vaccine most definitely saved many more lives than it may have cost, because it was primarily given initially to the most at-risk groups, in particular the elderly. The UK rightly accepted (but tried to downplay) the safety risks of the AZ vaccine, in particular for younger recipients, and moved over to the Biontech jab primarily, which had proved safer overall once there was significant data available from mass vaccinations.
This is how science should work. It is sad that UK politicians in particular exploited vaccination as a political benefit of brexit, which made them reluctant to adjust strategy when the risks of the AZ vaccine emerged and also poisoned the well when it needed EU vaccines to complete its own programme.