London's Air-Ambulance became Britain's first emergency service to carry blood whenever they're called to an accident. Experience has shown that when soldiers have been seriously injured in battle, an immediate blood transfusion can increase their chances of survival.
Phil Bayles reports now on how the same pricinple will now be applied around the capital.
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Abdul Samad, 28, was stabbed outside his family home in Little Venice last night and died an hour later in hospital.
Several holy sisters have set up a restaurant in Shoreditch - under the name "Nundos".
Westminster Police posted the picture on their Twitter account today as part of an appeal to track down Evegenii Shiianov.