Tony Blair is to receive a petition signed by 30,000 campaigners urging him to save a Midland hospital.
The signatures will be delivered to Downing Street on Monday, in protest against plans to downgrade Evesham Hospital in Worcestershire.
South Worcestershire Primary Care Trust, which runs the hospital, plans to close a rehabilitation ward, which serves patients from acute hospitals nationwide, and a stroke unit.
A third ward will lose all its GPs, and orthopaedic services are to be moved to a different hospital in the county.
Critics claim the closures will add to pressure on the Worcestershire Royal Hospital, a new hospital funded and managed by the private sector, which they argue does not have enough beds.
The delegation delivering the petition will include the Mayor of Evesham, Councillor Frances Smith, and Mid-Worcestershire MP Peter Luff (Con).
Decisions on the future of the hospital are due to be made at the next meeting of the Primary Care Trust Board, on October 5.
The PCT chief executive, Mike Ridley, has said he will base his report to the board on the findings of "stakeholder workshops" held last week, in which patients and local residents were asked to give their views.
Mr Luff said: "The future of the hospital is on the line on October 5 and we must remind everyone of the huge anger in Evesham, the Vale and the county of Worcestershire about what was proposed. Just because time has passed doesn't mean people feel any less strongly."
Earlier this year, Mr Luff challenged the Prime Minister to justify the downgrading in the House of Commons. Mr Blair said it was right that the local PCT made decisions about local health services, rather than Downing Street.
He said: "I understand that the proposals for Evesham community hospital are at an early stage and I expect that the PCT will take into account all representations before taking any decisions."