Has Labour boxed itself in with promise of no tax rises for 'working people'?

If growth does not come to the rescue, party will face stark choice of tax rises or cuts - but it has some wriggle room UK general election live - latest updates Labour's manifesto has offered more money for schools and the NHS while pledging to avoid raising tax on "working people" and maintaining a firm grip on the nation's finances. So do the party's plans really stack up?