Nine out of ten Brits want a public inquiry into the power of Big Six energy companies, claims Friends of the Earth (FOE). The environmental group revealed the figure from its latest survey of 1,000 people to promote its ‘Final Demand’ petition. It is calling for an independent investigation into the Big Six’s power over consumers and influence over politicians.

At an emergency energy summit held last Monday with energy companies, Ofgem and the Big Six, the Prime Minister and the Energy Secretary said that people should shop around for different energy tariffs to lower their bills.

But the campaign group wants a tougher stance towards the Big Six from the Government and regulators.

Andy Atkins, executive director at FOE said: “We’re making a Final Demand of David Cameron on behalf of families in Britain – launch an urgent public inquiry into the Big Six and give us a fair energy system.”

Industry watchdog Ofgem responded that its plans for a market shake-up “will make it much easier for consumers to compare prices easily”. A spokesperson added that in the meantime, people looking to switch should get help from the Energy Best Deal campaign run with Citizens Advice.

A spokesperson for DECC added: “Our view is that our and Ofgem’s reforms offer the quickest way to boost energy competition in the market.”

So far, 9,440 people have signed up to the campaigners’ petition.