Stroke patients across South Yorkshire can now receive a potentially life-saving clot-removal procedure at any time of day or night, after Sheffield's service expanded to operate around the clock. The expanded service is based at the Royal Hallamshire Hospital in Sheffield, which is the region's only centre offering the treatment.

Sheffield Teaching Hospitals NHS Foundation Trust announced the change on 29 October 2026, saying the service had already treated patients overnight. One early case involved a 91-year-old woman whose blocked brain blood vessel was treated at 2.30am; she was back on a stroke unit in Doncaster hours later to continue her recovery.

How the treatment works

Mechanical thrombectomy is used for some of the most severe strokes. A specialist doctor removes a blood clot from a large blood vessel in the brain, restoring blood flow to the affected tissue. Doctors stress that speed matters: the sooner the clot is removed, the more brain tissue can be saved, improving the chance of recovery and reducing the risk of lasting disability.

Around 200 patients received the procedure during normal working hours in Sheffield in 2025. The Trust is one of 24 regional stroke centres in England, and the only one serving South Yorkshire. Consultants involved in the expansion said strokes can strike at any hour, and that some patients treated since the hours were extended might previously have missed the treatment window.

What changes for patients

Patients can be admitted directly to the Royal Hallamshire Hospital, or identified at hyperacute stroke units in Doncaster and Chesterfield and transferred urgently to Sheffield. After treatment, they are normally returned to their local hospital within 24 hours for ongoing care. The Trust says the expansion was made possible by collaboration across the regional stroke network, including ambulance services and clinicians from South Yorkshire trusts.

Sources: Sheffield Teaching Hospitals NHS Foundation Trust; NR Times.