More than 23,000 elderly people died as a result of being too cold last winter in England and Wales.
The year before the toll was 29,000, which is nearly 10 people aged 65 or older every hour.
Figures for Scotland show the nation's winter death toll totalled 1,790.
Studies show elderly people, and particularly those on low incomes, are at the greatest risk. Those on small pensions might struggle to keep their houses warmer and might have to rely on public transport or walk rather than use a car, for example.