Have you received a disconnection notice?
If you can't pay a bill, you should contact your energy retailer as soon as possible
If you haven’t done this and you have received a disconnection notice, contact your retailer immediately to discuss payment options.
There are rules about when and how a retailer can disconnect your electricity or gas supply. These are in the National Energy Retail Rules.
If you have been disconnected, there are fees to reconnect your supply. These fees vary. For example, they can be different depending on the time of day.