Bess Limited is an energy consultancy specialising in reducing costs of energy transportation and metering. The elements that are generally ignored when a supply contract is being negotiated. Founded in 2010, Bess Limited have saved their customers over £500,000 during the last calendar year through optimising transportation charges and re-visiting adhoc invoices. Recommendation. David Olivant, Energy Procurement Manager, ASDA Stores Ltd, "Derick is a subject matter expert in the gas and electricity industry. I have used Derick on many occasions to help understand the pass through costs of the gas inudstry, and also for electricity. His detailed knowledge of the myriad of charges have helped ASDA save hundreds of thousands of pounds in costs. His extensive network of contacts are very useful, and his all round detailed approach to projects as well as costs have demonstrated clearly that he is an expert in his field. I have no qualms about recommending Derick, as he always adds value to what he does."