I thank the hon. Gentleman for that question and will write to him with an answer.
Too many people in my constituency are on prepayment meters. The forced installation of prepayment meters in places such as Peterborough, so that the most vulnerable have to pay more, needs to stop. What more can the Minister do to ensure that energy companies look at every possible avenue so that those in my city who are least able to pay are not paying the highest energy prices?
My hon. Friend is absolutely right. The system that we inherited and that exists today reflects the cost of supply, and Ofgem supervises that to ensure it is the case. Alongside him and others across the House, I would be interested in looking at that again to make sure we get a system with the right balance.