Brits could be wasting £134million a year by overcharging their gadgets, suggests new research.

Many people leave their phones and laptops plugged in for too long, suggests a survey of 2,000 adults by OnePoll on behalf of energy firm E.ON.

The supplier is launching an ‘Energy Fit’ campaign to get homeowner thinking about energy efficiency.

Almost half (43%) of people excessively charge their laptops, according to the poll, while 90% of consumers keep gadgets on permanent charge.

Emma Thompson at E.ON said: “We’re using more and more gadgets in our daily lives and it’s crucial we keep an eye on how much money and energy we’re wasting keeping them charging when we don’t need to.

“Generally mobile phones only take two hours to charge, but most people leave them plugged in overnight. By unplugging your gadgets once they’re charged, you’ll be helping to reduce your energy bills.”