1. Department of Haematology; GSTT; St Thomas’ Hospital; London UK
2. Department of Haematology; Royal London Hospital; London UK
3. Oxford Haemophilia and Thrombosis Centre; Oxford University Hospitals; Churchill Hospital; Oxford UK
4. Department of Haematology; Leeds Hospital; Leeds UK
5. NHSBT/Department of Haematology; John Radcliffe Hospital; Oxford UK
6. Patients’ Clinical Team; NHSBT; Manchester UK