British Gas have said raising energy prices was a "difficult decision" but necessary due to the increasing cost of buying energy in global markets.
The energy giant said they recognised energy bill were a "real worry for hard-pressed households".
A statement read:
Today’s announcement, which will add about £2 a week to the average dual fuel bill, reflects the increasing cost of: buying energy in global markets, delivering gas and electricity to the home, and the Government’s social and environmental programmes, which are paid for through customers’ bills.
British Gas currently charges the average user £1,340 for 'dual-fuel' gas and electricity.
The rise takes it above £1,474 a year.
British Gas prices are up on average at 9.2 per cent - a dreadful blow for more than 12 million households.
They increased prices last year by 6.4 per cent.
An estimated 2 million people are in fuel poverty already, increasing fears that this figure will grow rapidly.
British Gas has announced that electricity and gas prices will rise by 10.4 per cent and 8.4 per cent respectively from November 23.
Energy company SSE announced last week that all household electricity and gas tariffs would increase by an average of 8.2 per cent.