Britain does get quakes, it's just that they have the siezmometers set very very sensitive in order to detect them. There were measurements being taken on the Isle of Wight, and the equipment was set so low that people walking past (or making love upstairs, so the urban legend goes) could be measured on it.
Every country gets quakes it's just that the only places that 'suffer' bad quakes are on the plate lines.
We had one here in New England, but I never felt it, it was like 2.4 or something, a few months ago. Of course plates can crack, so new fault line can develop anywhere, at anytime, that aught to help you sleep, ha ha ha.
Acid never made me shake (that was generally when I was coming down, not that I partake anymore, only nice legal antibiotics for meeeeeeee).