1. Northern Ireland Haemophilia Comprehensive Care Centre, Belfast City Hospital , Belfast , Northern Ireland
2. Evelina London Children’s Hospital, Guy’s and St Thomas’ NHS Foundation Trust , London , UK
3. Royal Free London NHS Foundation Trust , London , UK
4. Noah’s Ark Children’s Hospital for Wales , Cardiff , UK
5. Kent Haemophilia and Thrombosis Centre, East Kent Hospitals University NHS Foundation Trust , Kent , UK
6. Oxford Paediatric Haemophilia and Thrombosis Centre , Oxford , UK
7. Haemophilia, Haemostasis and Thrombosis Centre, Basingstoke and North Hampshire Hospital , Basingstoke , UK