[anthilemoon]

I live in London but I went back to Paris where I'm from for Christmas. Here in Paris it was the norm: everyone got tested before driving to their families for Christmas. The days before Christmas there were white tents every couple of blocks where you could get tested without an appointment. You're probably right that's what lots of people in London did as well.

[tomatocracy]

Yes. Some employers here (London) also offered testing on-site for this exact purpose.