The government has reneged on a pledge to refund £425m to charities after the Olympics, instead leasing the stadium to West Ham for a mere £2.5m a year Rachel Cain is senior researcher at the Directory of Social Change As West Ham United kick off a new season in the Olympic Stadium where the nation cheered Mo Farah and Usain Bolt in the World Athletics Championships this summer, few will be aware that this fabulous venue, now the London …