1. University College London Hospital Head & Neck Academic Centre London UK
2. Department of Applied Health Research Institute of Epidemiology & Healthcare University College London London UK
3. ENT/HNC SLT Department Nottingham University Hospitals Healthcare Trust Nottingham UK
4. Department of Speech Voice and Swallowing, The Royal Marsden NHS Foundation Trust London UK
5. Department of Surgery and Cancer Imperial College London London UK
6. Imperial College Healthcare Trust, SLT Department Charing Cross Hospital London UK
7. National Association of Laryngectomee Clubs London UK
8. School of Health Sciences, Institute of Population Health/Liverpool Head and Neck Centre University of Liverpool Liverpool UK