[vladvasiliu]

It's anecdotal, but during all my visits to London, pre-covid, I've always had good enough cell reception. I didn't watch youtube or similar, but I could always use google maps and city mapper, both of which I've used extensively since I'm not familiar with the city, or check random internet websites.

I didn't pay attention to which provider I was using, since it was probably chosen by whatever deals my home provider stuck with providers over there.