[user104658]

A lot of Timsonses are inside Morrisson's stores; I think there's be an argument for keeping those open, and having it be for key-cutting only (things like dry cleaning and shoe repair are not essential). Realistically they'd only need one staff member on at a time, and it's usually just a desk near the customer services area... you could drop off a key, do your shopping and then pick it up on the way out. I don't think that would present that much of an increased covid risk.

I've just learned that you CAN actually get keys cut online by post - but I'm not sure how I'd feel about posting my door keys off WITH MY ADDRESS ATTACHED?

I guess you could do it more safely by getting them sent back to another address like a workplace or if you're in a bubble with another household .