Blood donors needed
London's hospitals are calling for more blood and bone marrow donors.
Pregnant women are also being urged to donate their placenta as part of a scheme to help seriously ill people with the blood that's found inside.
How to become a bone marrow donor?
To become a bone marrow donor, you have to be a blood a donor first, so that your blood can be checked and you must be aged between 18 and 49 years old.
You can join when you next give blood, or at the same time as your first donation. They will then check that there is no medical reason preventing you from being both a blood donor and a stem cell donor.
At the time of your blood donation they will take an extra blood sample, so that they can identify your tissue type for the registry from your DNA - the genetic material our bodies are made up from.
More top news
-
Police create dispersal zones around south London raves
The unlicensed events unfolded on Saturday night at Clapham Common and Tooting Bec Common.
-
Second man dies in River Thames drowning
A 37 year old man who was taken to hospital after getting into difficulty in a stretch of water near Maidenhead has died.
-
Teenager jailed for throwing six year old boy off Tate balcony
Jonty Bravery, who is mentally ill, has been jailed for 15 years after throwing a six year old boy from the Tate modern balcony.