Plans to devolve £6 billion a year of health spending to Greater Manchester will lead to closer integration between the NHS and social care and improve results for patients, George Osborne has claimed.

The Chancellor insisted the massive expansion of devolution would not weaken the NHS nationally but would give Manchester greater control of its own affairs.

The announcement was given a cautious welcome by organisations representing doctors and nurses, who support better integration between health and social care but are anxious about another extensive reorganisation of the way the NHS is run.

Under the plans, responsibility for the money will be given to 10 local councils from April next year.

The Chancellor has championed devolution to Manchester as part of his vision to create a "northern powerhouse" to rival London and he said the plans were a part of the aim.

He said: "We're discussing a plan for bringing together the NHS and social care in Manchester so we provide better care for patients."