Energy price rises are fuelling increasingly costly household bills, according to Experian's CreditExpert online monitoring service.
CreditExpert found 41 per cent of adults are worried about ordinary household running costs, and 54 per cent of people changed their behaviour, either by cutting spending or by using less energy.
This is good news for the environment, with 'green thinking' making 31 per cent of Britons more energy-conscious than previously, taking measures which spare the planet as well as their purses.
The Stern report on climate change has recently underlined the need to begin greening our lifestyles.
According to the Energy Saving Trust, each home in Britain creates about six tonnes of CO2 a year, but can cut that output by a third through simple measures such as switching off lights and chargers, and using energy-efficient lightbulbs.
Meanwhile, many consumers are acting to address their anxiety over household costs by changing borrowing habits, with 21 per cent of adults surveyed taking out credit in the past year against 27 per cent one year ago.
Jim Hodgkins, managing director of CreditExpert, advised consumers to consult their credit reports, "keep on top of our financial situation and be prepared for any unexpected payments".
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