Devolution plans strengthen case for written UK constitution, says Burnham

PM argues for codified model of decentralisation that would fundamentally change centuries-old workings of state

Andy Burnham has said his programme of devolution strengthens the case for a written constitution for the UK, a move that would fundamentally alter the workings of the state that have developed over centuries.

The prime minister has long believed the UK's antiquated" political system needs a dramatic overhaul if opportunity is to be shared equally across the country.