The Haemophilia Society (THS) is the only UK-wide charity for everyone affected by a genetic bleeding disorder. We are free to join and have more than 5,000 members.

Our aim is to empower everyone affected by a bleeding disorder to live life to the full. We believe that with the right support, almost anything is possible.

One in 2,000 people in the UK have a diagnosed bleeding disorder, including conditions such as haemophilia and von Willebrand disorder, that result when the blood cannot clot properly. As many as a third of bleeding disorder diagnoses have no known family history, which means a diagnosis can come completely out of the blue.

We’re a small charity with big ambitions for improving the lives of people with a bleeding disorder. We are proud to offer free events to our members, bringing our community together to forge friendships, share experiences and find out about the best treatment and care.

We campaign for what matters to our members, lobbying government, the NHS and clinicians to demand excellent care and safe, effective treatment, which is available to all.

By sponsoring our swimmers in the Serpentine Swim, you are helping us continue our vital work, bringing support and recognition to everyone affected by a genetic bleeding disorder.