38 per cent of people who keep tabs on spending use one, saving an average of £240 a year.

British Gas, EDF, EON, Ovo and Octopus customers are being urged to make one phone call and cut £176 off their energy bill.

From that regular Sunday roast to our favourite Indian takeaway, you might think that Britons are creatures of habit. However ...

Nigel Morris, 58, from Shropshire, was horrified when a bill from Scottish Power landed on his doormat last month saying he owed £1,407.