I'm in the rural part of the UK, and my main concerns natural-disaster-wise here would be flooding or house fires. Quite a few towns near me but down in the bottom of the valleys had flooding during heavy storms at some point during the past few years, but I live up a hill, so that's not a worry for me at all right now - as far as I'm concerned, you can avoid losing everything in a flood by, you know, not buying a house that is at the bottom of a valley on a river's flood plain. As a longer term measure, I think we ought to be planting more trees uphill of flood zones.
In terms of fire, most fires over here are isolated occurrences - the climate's wet enough that wildfires aren't a concern at all. Therefore the most likely reasons my house would set on fire would be smoking, and I don't smoke, electrical fires from faulty kitchen equipment, or accidentally managing to piss off an arsonist, which I think is probably also unlikely.
The thing that most concerns me in the UK is the population level and the just-in-time supermarket system. The UK as a whole imports something like 40% of its food, I'm sure I read somewhere. I'm trying to learn how to garden, because while I don't think it's likely in the immediate future, I could definitely see some sort of food supply issue happening within the next 50 years if some sort of world war or climate disaster interrupted world food trade.