You can sign up for priority resupply for many reasons over sixty , physically disabled or long term health such as needing an oxygen supply , intensive live stock production critical service supplier ie. doctor .
Go on line and check it out on the suppliers website
But you can't beat a small 2.2 K pure sine wave suitcase petrol stand by genny genny with an auto infrared fob start . all ready ready to be plugged in to an independent set of sockets in your home with a long heavy duty extension lead is handy .
I can unplug my heating & run it from a live genny socket , same with the internet , computers and plug in LED lighting such as bedside lamps , a lamp stand .
We run a four burner gas hob with two of the large four foot six tall propane cylinders hooked up to it . The heating is by 32 second oil .
So for a prolonged sixteen foot deep fall of snow(
) we can use a pressure cooker and pans on the hob and still have central heating , lights and perhaps the internet via the router or use Alison's or Holly's smart phones if the BT line is down . . .