If like me this week you find out you have no gas supply for 4 days, I have just found about the priority service register, a bit late.
When scottish gas arrived on Sunday to look at the boiler, I mentioned to him as a RA sufferer I am registered disabled and need my heating and hot water supply. He said it is not on his priority list, but a quick phone call will sort it.
I don't qualify for any discount or anything. But I do qualify to be on the list.
If power goes out to my home they will attend to me first, warn me of intended works etc. Example when I phoned the number on the card to be reconnected after the national grid sorted the mains supply to my home they said they will be 4 hours, when I said I was on the priority list they were there within the hour.
Totally tropical in here now.