The British Gas of old (pre 1997) has evolved into three entirely separate public quoted companies. (1) Centrica that sells gas to millions of households in the UK trading under the name British Gas Trading Ltd. It retains rights to the British Gas name and trademarks in the UK and has added electricity sales, credit cards and motor organizations (AA) to its list of activities (http://www.centrica.co.uk/); (2) Lattice Group which operated the national pipeline systems and local gas mains to the meter through which the gas is delivered and then became part of National Grid Transco (http://www.nationalgrid.com). National Grid is now an international electricity and gas company that delivers gas and electricity to many millions of people across Great Britain and northeastern US; (3) The BG group, which is an international oil and gas exploration and production business linked with gas distribution and power generation (http://www.bg-group.com/home)