The UK's blood cancer charity and bone marrow register.

Twitter support from Bobby’s co-stars and other reality TV stars leads to 3,000 donor sign-ups in a week, a 750% increase compared to same week... It all starts with spit, or a little bit of blood. And thanks to the generosity of our donors, the new mums, the great minds in our labs, and the selflessness of our supporters, it can end with someone’s life being saved.