MoneySavingExpert has found that the cheapest fixed rate tariff is with First Utility, which if fixed until 31 March 2014 is the market's cheapest. However, it does have £30 per fuel (£60 dual fuel) exit fees meaning that, if prices drop and you leave early, you have to pay. Scottish Power’s is the cheapest fixed rate tariff with no exit fee. It also locks in prices until 31 March 2014.
But, if you’re not fixing, stick with your current provider. “If you’re on a pre-pay meter, for example, then hold fire and wait until all the big suppliers have hiked their prices. Then you can compare what’s on offer,” says Lewis. You don’t want to hop out of the frying pan into the fire by switching to a provider which then increases its prices even more.