I signed up with Utility Warehouse just before the energy price cat effective 01 January 2025. Firstly the unit rates for gas and electricity are excellent, and the standing charges c. 20% lower than my previous provider. My broadband despite an engineer shoddy workmanship was sorted just after Christmas and is working well and with my mobile and broadband I'm saving c. 400 pounds per year just on mobile and broadband. That's the positives. Their billing is atrocious. My transferred meter readings for electricity were wrong when they issued their first bill, and although UW were very responsive to my query confirming they will suspend my direct debit payment for the first bill, they still messed up the correcting bill. Being an accountant used to billing and contract compliance this kind of thing is right in my wheel house and I won't let UW get away with it. They are regulated by OFGEM and FCA and they have a legal duty of care to their customers. If anyone reading this has cause to speak to UW about any issues regarding erroneous billing, when you get through, tell the representative that you want to record the call (even if you aren't) and ask them if they are happy to continue. (They are unlikely to refuse after all as you are a customer and will record their call with you if they had to contact you).