I am a retired energy buyer, I checked out uSwitch for my own gas & electricity. They came up with a 'cheaper' deal where the costs were higher - so much for cheaper deals. Looks to me that they just suggest suppliers who pay them the highest. Doing your own checks are soooo easy, just write down your unit costs & standing charge costs (per day) , ignore your annual usage and if the proposed supplier is offering cheaper rates than you are currently paying then you are on to a winner. if you multiply the unit costs by your annual usage and add on the annual daily standard charges, you will then have your TRUE annual cost.