Octopus Energy To find the best local energy supplier prices, you'll need to compare offers from different companies in your area. Factors like standing charges, unit rates, and potential exit fees should be considered. Some of the cheapest energy suppliers in the UK include Tulo Energy, Outfox The Market, and ScottishPower. For business customers, British Gas, British Gas Lite, Valda, and Scottish Power are listed as options.
