Dishonest, unreliable, incompetent. In 6 months they missed 3 appointments, lied about it, and completely failed to follow any of the guidelines. Did not honour their duty to change metering when requested. Their website is designed to prevent anyone from complaining. You have to spend hours waiting on the phone. When I did manage to lodge a complaint they closed it without asking me. And to cap it all, three months after I finally managed to get rid of them they sent me a bill for £60, even though I was on a prepayment meter that was in credit. Apparently demanding money for services that you have not provided is not a criminal offence - it's a "minor customer service issue". If you do go with these cowboys, save yourself some time and contact the Energy Ombudsman beforehand.