Fortunately the worst disaster we can really expect here in central UK is perhaps some powerlines blowing over. The longest I can remember being without power is a couple of days, after a snow storm. Oh yes and the mains water went too - I remember thawing snow out in the bath!
The worst earthquake I can remember was strong enough to wake me up convinced that my building was being hit by a truck and was going to collapse, but not enough to do any worse actual damage than knock over a few chimney pots. I have had some interesting flooding experiences, but this was while living aboard a boat, and preparedness is mandatory if you live on board.