Click above to visit a price comparison site for gas and electricity supply. uSwitch.com are one of the UK's largest independent online price comparison calculator for gas and electricity bills. You can pick gas and electricity from a range of UK heating providers. uSwitch state on their web site (08/03/2003) that you can save an average of £140 a year on your gas & electricity bills if you signup with uSwitch. All you have to do to signup for uSwitch is enter your postcode then your usage details which will produce your results and then enter your personal details and finally confirm switch.