A new survey has found that bundled services provide better value for money than standalone broadband packages.
The YouGov poll reveals that Britons are wasting around £400 million a year buying separate services without doing prior research.
Charlie Ponsonby, chief executive of SimplifyDigital, which commissioned the study, said: "The average saving we identified was £160 a year - enough to offset the recent rise in energy prices."
Of the 200 adults interviewed for the study, 39 per cent had not done any research prior to committing to a contract of 12 months or more, according to Mail on Sunday.
Mr Ponsonby said he was concerned about this lack of comparative analysis, adding that significant savings could be made when customers compare bundled deals before signing up.
The news follows recent reports that the popularity of bundled services is growing. US-based provider Cox stated that more than 62 per cent of its domestic customers were now choosing combined TV, mobile and phone packages.
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