We have a 300 litre mega flow tank in the garage which we installed as a back up for hot water (it has an electric heater for hot water if our gas boiler fails) but in an emergency this would protect us from a loss of mains supply!
I keep some tinned fruit and rice pudding and dried fruit and nuts for an actual emergency! No need to heat and very calorific! I also have a stockpile of wine, gin, vodka etc…. To keep my spirits up in an emergency!
If there was a nuclear attack I would want to be wiped out in the first phase… but I think my house is just outside the immediate death zone… the radiation though would have me dead within a few weeks as it liquifies cells.
If it was a non nuclear disaster there is a good chance that I would be called into work as part of the civil contingency response.
My main concerns are cyber terrorism and weather, but if it was a weather disaster then I would be required to work!
I always keep a full tank of fuel in my car and the battery fully charged (plug in hybrid) as cars are essentially mini power stations that can be used to charge phones etc… but also to evacuate an area if needed.
My Stepfather ran his car on vapours expressing a theory that putting petrol in the car made it heavier and slightly less fuel efficient! He regularly ran out of petrol though… and his car would have been useless in an emergency!