Energywatch
One of the first things you look at when comparing gas and electricity prices is if you use an online company and if that online company is member of energywatch. Energywatch is a kind of standard in which all accepted standards and you serve as a guarantee of quality. This Energywatch said: “You can use an Internet price comparison service to compare the different offerings from domestic electricity and gas suppliers, and to find out how much you could save by switching to a new supplier.”
Energywatch has a code, named: “The Energywatch confidence code”, you can download the code is their web and here.