1. Oxford Haemophilia and Thrombosis Centre Oxford University Hospitals NHS Foundation Trust OxfordUK
2. Haemophilia Centre Barts Health NHS Trust LondonUK
3. Specialist Haemostasis Cambridge University Hospitals NHS Foundation Trust CambridgeUK
4. Haemostasis Section Biotherapeutics Group National Institute for Biological Standards and Controls HertfordshireUK
5. UK NEQAS for Blood Coagulation SheffieldUK
6. Department of Haematology the Newcastle upon Tyne Hospitals NHS Foundation Trust Newcastle upon TyneUK
7. Centre for Haematology Imperial College and Hammersmith Hospital London UK