The group's second-biggest profits earner is its oil and gas exploration and production division, which has a large presence in the North Sea and Morecambe Bay. The division contributed 13 per cent of group profits and has been expanding its overseas activities. Last year it won the rights to develop a huge oil and gas field in Kazakhstan.
Some analysts believe the MMC recommendations are likely to spur the group into expanding exploration and production worldwide.
Global Gas, a Canadian gas company acquired three years ago, accounted for 8 per cent of group profits last year.
British Gas dominates the UK domestic energy market, serving 18 million customers. Gas is the biggest energy source for commerce and industry.