A spokesperson at Energy UK said:
“Our members are well aware that customer service – along with attractive deals and prices – is at the heart of what their customers are looking for. This is helping drive the sustained increase in switching we are seeing in the energy sector. Energy companies know they are operating in a competitive market and are working hard to improve what they offer.
“We agree with Which? that customer information should always be simple and clear and fair. It is therefore important that the changes introduced earlier this year as part of the regulators retail market review are fully evaluated from the customers’ perspective.”