The event will take place near Boots on the High Street at 11.30am, where organisers intend to set up a mock crime scene to draw attention to the possibility of changes to hospital services.

The hour-long demonstration follows a gathering in Tuesday Market Place last month, when more than 500 people took part in a 'human A&E queue'. Participants carried signs comparing journey times to the QEH with those to the Norfolk and Norwich University Hospital.

Since that protest, the Norfolk and Waveney University Hospitals Group has confirmed that 24-hour emergency departments and critical care services will remain at all three of its hospitals, including the QEH, Norfolk and Norwich University Hospital and James Paget University Hospital in Gorleston.

The announcement followed discussions about the group's Case for Change, which is examining how hospital services should be organised across Norfolk and Waveney in the future.

While the position on emergency and critical care has been clarified, maternity, neonatal and children's services will undergo further detailed assessment.

The review is considering clinical needs, staffing and the long-term sustainability of services across the three hospitals. No decision has been made to close or relocate maternity, neonatal or children's services at King's Lynn.

For families living in West Norfolk, particularly those in rural and coastal communities, travelling distances to hospital are among the concerns being raised.

Campaigners say they want those considerations taken into account as the NHS examines the options available.

During Sunday's demonstration, organisers plan to distribute leaflets explaining their concerns and encourage people to sign an online petition.

The campaign has brought together local residents, NHS staff and politicians from different parties, with the future of hospital provision continuing to attract interest across the area.

Further activity is planned for Thursday 19 November, when campaigners intend to gather outside County Hall in Norwich at 9am before attending a meeting of the Health Overview and Scrutiny Committee.

The hospitals group has said that further assessment is needed before decisions about the future organisation of maternity, neonatal and children's services can be made.

For now, those services remain in place at the QEH while the review continues.

Photo: Richard Dix