Recent price hikes have increased the profit margins enjoyed by Britain's big energy firms to £125 per customer a year from £15 in June, it emerged today.
The rate of inflation continued to climb last month, official figures revealed today, as utility bill hikes hit a two-year high and clothing costs saw their biggest increase on record.
Energy regulator Ofgem has stepped up its investigation into the big six energy suppliers to determine if profits at their retail arms have been underestimated to justify higher prices.