The NHS Blood Service states, “You must not donate if you tend to bruise easily, if it takes longer to stop bleeding, or if you have been treated with blood-derived coagulation concentrates such as Factor VIII”.
The NHS Blood Service helpline can answer questions about bleeding disorders and carriers. They’re available Monday to Friday, 9am to 5pm at 0300 123 23 23.
You can find more information on the Give Blood website.
The rules may be slightly different in other parts of the UK. Click on the following links to get specific information on the rules in Wales, Scotland and Northern Ireland.