The time change coincides with the rise in the energy price cap, which comes into effect the following day.
And that means householders will be paying 6.4 per cent more for their energy bills.
John Small, home energy expert and founder of Ty Eco, said that there are three things to be done before Sunday's clock change that can save you between £120 and £200 on the annual bills.
John, whose firm builds eco-friendly homes, said: "If you're not careful, you could end up heating an empty house or leaving lights on longer than needed, and with bills already high, that's money down the drain."
Here are three key steps everyone should take.
Reset your thermostat. Many ...