The clocks go back this weekend, heralding the start of another cold winter and with a recent Which? survey showing that energy prices are the number one financial concern for consumers, it’s more important than ever to ensure that your household is on the most cost-effective tariff for its needs.

To coincide with National Energy Saving week, October 24-28, Which? is encouraging people to check that they are on the most suitable tariff for them. It only takes 10 minutes to check. With the average annual saving by dual fuel customers who switched with Which? Switch – www.which.co.uk/switch or 01992 822867 – last year standing at £237, it may be the most fruitful 10 minutes you spend online this winter.

Unfortunately, there’s nothing we can do about the weather, but you could save yourself hundreds of pounds a year by switching energy supplier.

Tom McLennan, Head of Switching, Which? Marylebone Road, London.