[ardourdev]

I have noticed that Google Shopping is blocking results for "N95 mask" in the UK, making it more difficult to find retailers which sell them. On the other hand there are thousands upon thousands of results on eBay/Amazon, most of which cannot be trusted.

[iso1210]

Use ddg in the UK, type "buy n95 mask", 3rd result down is

https://www.buyfacemasks.co.uk/

No idea how reliable they are, but that's always the danger when you buy anything from a small shop. I don't like the look of is as I can't find any corporate information about the store on their site, but it's no worse than buying anything else online.

[viraptor]

You can also look for comparable quality masks by name. For example Korean airqueen is still available relatively cheap and they're amazing quality.