Just to say also, after this was announced, I switched our electricity tariff to another fixed one for a year which is saving about £300 a year, which helps. It's actually a higher daily standing charge, but 5p per kw lower for electricity (don't have gas) so over a year it's a saving. I did all the sums! That's with Eon Next - I'm not sure if you can switch companies these days.
So that is something to look at. But! We could have had both! A better tariff and the winter fuel payment because energy prices are still outrageously high.