Other than the fact that you risk a £100 fixed penalty for non-compliance. Also, and this does have some plausibility, a mask might protect others if the wearer is infected and is the gobby, shouty, heavy breathing type.There is NO evidence, actual, REAL data, for anything associated with face masks.
i find this meets the needs of shop keepers around here.
2020-06-05_04-27-26 by uh_simon, on Flickr
If anyone what to buy one let me know and i'll share the link
Got some good washable ones in Didl.
One question though. If you normally wear a burqua, and it's banned in France, what do you wear?
Neither of your links tell us anything about the efficacy of face coverings in reducing the spread of COVID19. The continuous failure to reason is wearing.
Not all FFP2 or FFP3 masks are valved. You can wear a surgical mask over a valved FFP3 mask if you want to reduce transmission through the valve, or a visor.The problem with masks is ingress vs. egress protection. The common surgical mask/scarves/diy etc are used to provide some limited defence against the wearer spready the lurgy in the form of droplets, as will be found close to the mouth, when they cough or breathe. Once the droplets travel further they aerosolise and these types of mask provide little defence against that.
Conversely the FFP2/3 type masks do provide some defence against the aerosolised transmission, but they are free flowing/valved on egress and provide no defence against droplet transmission from the wearer. So if I go to the supermarket riddled with the plague and wearing an FFP3 mask and you are all wearing surgical masks, you will not be protected.