More than 6,000 people have signed a petition calling for an investigation into A&E services at Stoke Mandeville Hospital.
The petition has been organised by Lib Dem county councillor Julia Wassell after concerns were raised about the centralisation of A&E services from Wycombe in Stoke Mandeville.
Bucks Healthcare NHS Trust, which runs both hospitals, said it has been meeting national standards since April and that £5 million has been invested in a new clinical decisions unit, resuscitation area and a surgical assessment unit in A&E.
The petition says: “We all know in Wycombe that the centralisation of accident and emergency is not working, but there needs to be an investigation to highlight these flaws.
“Without an official report there is little chance of ever getting back our hospital services.
“We call upon Buckinghamshire County Council to carry out an immediate investigation into the service provided by Stoke Mandeville Hospital to ensure Wycombe residents are not being disadvantaged due to the lack of a local accident and emergency service in High Wycombe.”
Thousands of people have signed the petition online and in person.
To draw attention to the cause, Ms Wassell, who represents Ryemead and Micklefield, is walking to Stoke Mandeville Hospital from Wycombe Hospital on Sunday.
The hospital trust said: “Following an extensive public consultation last year, the urgent care service at Wycombe Hospital was changed from an emergency medical centre to a minor injury and illnesses unit.
“This change was clinically-led and necessary to ensure that we could continue providing our patients with safe, high quality care.
“We did not see any more patients than expected over the winter period and, similar to other trusts across the country, the prolonged cold weather and outbreak of norovirus put a strain on our services.”