- Salford Royal NHS Foundation Trust
- Salisbury NHS Foundation Trust
- Sandwell and West Birmingham Hospitals NHS Trust
- Sheffield Teaching Hospitals NHS Foundation Trust
- Sherwood Forest Hospitals NHS Foundation Trust
- Shrewsbury and Telford Hospital NHS Trust
- Somerset NHS Foundation Trust
- South Tees Hospitals NHS Foundation Trust
- South Tyneside and Sunderland NHS Foundation Trust
- South Warwickshire NHS Foundation Trust
- Southport and Ormskirk Hospital NHS Trust
- St George's University Hospitals NHS Foundation Trust
- St Helens and Knowsley Hospital Services NHS Trust
- Stockport NHS Foundation Trust
- Surrey and Sussex Healthcare NHS Trust
- Swansea Bay University Health Board