HS2 (high speed railway) is going to cost at least £55,000 million to carry an estimated 5.4 million passengers per year. For the same money we could spend an average of £4,500 on making half of the UK’s homes (12 million of them) more energy efficient, which would be of direct benefit to around 30 million people. If we started with homes where people are in fuel poverty maybe Ed Milliband wouldn’t have to go to war with the energy companies.