Andy Burnham, Britain’s presumptive next prime minister, has set out details giving more powers to local government as part of a plan to spread wealth and economic growth.Saying Westminster “is not working” and is “broken”, he set out a sweeping economic vision in a key speech from Manchester – where he was mayor for nine years – to bring voters, colleagues and financial markets up to speed with his ideas during his rapid progress towards power.He set out a 10-year vision for “good growth in...