If you move into new premises and start to use power without agreeing a new contract, you’ll be on what’s called a ‘deemed contract’. To recap, this is when there’s no mutual agreement in place, but the supplier for the premises you’ve moved into continues to provide power. A deemed contract situation can also happen if you reach the end of a contract without negotiating a new one.
Ofgem found that the costs associated with deemed contracts are usually among a supplier’s most expensive rates. So, if you’re on a deemed contract, you could make serious savings by comparing business electricity.
You have a right to switch at any time and for any reason if you're on a deemed contract, even if you're in debt.