The extra £8bn of funding pledged for the NHS will not fund all the promises the Tories have made for a seven-day service, an influential health think-tank has said.
Professor Chris Ham, chief executive of the King's Fund, told the Today programme: "That's welcomed but that will really help to keep existing services running, it won't fund all the new commitments we have heard of during the election campaign, including seven-day working".
"We must make sure there's enough cash in the system to pay for the extra staff to deliver a seven-day service.
"Secondly we've got to pay much more attention to workforce planning and training,ensuring we've got enough doctors, nurses and other staff coming through to deliver.
"But the third thing is it's not just about more, it's about doing things differently.
The Prime Minister has pledged to deliver a seven day-a-week health service in his first major speech since returning to Downing Street.
In a speech later today, the PM is expected to renew Tory promises to boost NHS funding and create a "seven day service" for patients.