UK expert urges 1°C thermostat drop to save £90 yearly on heating.

Martin Lewis, a UK personal finance expert, is urging households to lower their thermostats by one degree Celsius to save up to £100 annually on heating bills. The "1C rule," promoted since 2022, aims to reduce energy use by making heating systems work less hard, with estimates suggesting around £90 in annual savings for the average home. The advice remains effective amid rising energy costs and is considered a simple, practical way to cut bills without sacrificing comfort.