1. North Manchester General Hospital, Pennine Acute Hospitals NHS Trust; Department of Otolaryngology, Head and Neck Surgery; Delaunays Road Manchester UK M8 5RB
2. Lancashire Teaching Hospitals NHS Foundation Trust, Royal Preston Hospital; Preston UK
3. Newcastle General Hospital; Northern Centre for Cancer Treatment; Westgate Road Newcastle upon Tyne UK NE4 6BE
4. Manchester Royal Infirmary, Central Manchester University Hospitals Foundation Trust; Department of Otolaryngology, Head and Neck Surgery; Oxford Road Manchester UK M13 9WL
5. Glasgow Royal Infirmary; Department of ENT Surgery; Department of ENT Surgery University NHS Trust Glasgow UK G31 2ER
6. North Riding Infirmary; Department of ENT Surgery; Newport Road Middlesborough Cleveland UK T51 5JE
7. University of Central Lancashire; School of Postgraduate Medical and Dental Education; Greenbank Building Preston UK PR1 2HE