Sorry, Gal, my OP was not intended as scare mongering, I was simply wondering why we have been constantly reassured, since the middle of summer, that winter power would be OK. The last instance was after two nuclear plants were found to have cracks and would no be able to run at full power, and would eventually have to shut down for repairs. That, however, was before the fires at Ferrybridge and Didcot put both partly out of action. Collectively these events have left National Grid, at its own estimation, with only a 4%, or possibly 2.8% spare capacity.
All I am questioning is how such margins for error can be said to be comfortable when it is not known how the winter weather will pan out. I have an electrical camping power pack and a gas camping stove and I will make sure that I check them out thoroughly before winter sets in. I might never use them, but they will be there - just in case.
And I'll be getting in more than a pinch of salt for the steps and footpaths.