This is a commercial matter for the gas supply companies. As I mentioned in an earlier answer on 2 March 2007, Official Report, column 1602W, Ofgem, as the independent sectoral regulator, keeps the level of competition in the gas market under review, and has the powers it needs to deal with any failure of competition.
Subject to any regulatory controls, it is for gas suppliers, not Government, to determine who their most valuable customers are.
No. Ofgem, as the independent sectoral regulator, produced a fact-sheet last month called ‘Household Energy Bills Explained’, which explains why there is a time lag between the falls in the wholesale price and domestic prices see:
http://www.ofgem.gov/uk/Media/FactSheets/Documents1/Update%20-%20Household%20energy%20hills%20 explained.pdf.
As I mentioned in an earlier answer on 2 March 2007, Official Report, column 1602W, Ofgem keeps the level of competition in the gas market under review, and has the powers it needs to deal with any failure of competition.