Yu_Gi_Oh
天天好心情
eBay, they are about all that are available on there of you look for ffp2 masks.
Paranoid they are a crock of shit fake of course.
They're probably fine. There are more than enough N95 masks for everyone at this point so there's no need to be selling fakes. If the UK govt chooses to not get a decent supply for key workers, that is due to their own shitness, not a lack of availability. I have shipped boxes of them out of China and to loved ones, and since the virus was brought under control here, they can be manufactured and exported in great quantities.
These are basically identical to the kind I buy.