I don't know what a proper description of "NSS" is, but in my eyes, a non-standard salon (that's what it stands for, right?), does not include only non-standard materials, but also other non-standard stuff. Like being located in a restaurant. It is not only improper for the nail business, but also for the restaurant, where food is more likely cooked from scratch. I know it would be fully illegal in Virginia, where I live now, also in The Czech republic, where I am from and since the UK and the CZE is both in the EU, I would guess the rules will be somehow similar. And I would ask proper authorities because I would not want any people to eat acrylic dust with their food. I have to follow rules and I agree with 99 % of them because I do not want to hurt people so I would not be willing to tolerate that kind of hazzard from anybody else...