Unions, thinktanks and others say overhaul could provide investment Britain needsUnions, thinktanks, environmental groups and charities have come together to call on ministers to boost the financial firepower of the national wealth fund to empower it to invest more in Britain and rebalance the country’s economy.Lower energy bills, the revitalisation of the UK’s industrial heartlands and the provision of more high-quality jobs could all be unlocked by scaling up the NWF, according to a statem