The National Audit Office (NAO) has said that the households in the country are being forced to pay more in utility bills in order to help renew Britain's ageing infrastructure.

The regulator also said that the government does not have any idea about continued price hikes that are adding pressure on the households in the country. The Treasury estimates has said that about two-third of the total £310 billion of the planned infrastructure investment during the next year and beyond come from private companies and will be ultimately paid by the customers.

Energy prices have become a crucial political agenda since opposition Labour leader Ed Miliband said that he would freeze prices if his party wins the general election in 2015. The four leading firms increased their price by an average of 9.1 per cent causing customer bills to exceed £1,400 a year, raising doubts that the companies are displaying cartel behaviour. According to estimates, the value of energy bills has risen to twice their levels since 2000.

Experts have said that high level of investment required would force companies to increase prices in the country.