Because your blood group is B Rhd negative, you are immensely important to our lifesaving work. Fewer than two out of every hundred in the UK share your blood type.
Since your blood group is so rare, it's very hard to collect, and even harder to make sure we always have enough, so we always need more.
And whether it's used for planned operations like a hip replacement, in an emergency, or for cancer treatment, you can be absolutely certain that your blood is helping to save lives.
You can give blood three times a year, so please be sure to keep up your outstanding work and donate every four months if you possibly can.