Police have released a photograph of the 16-year-old who was stabbed to death in Pimlico.
Hani Hicham Abou El Kheir was taken to hospital on Sunday evening but died later that night.
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Showers around this evening and overnight - keeping the temperature fairly mild, but not feeling pleasant.
The rapper answered questions in a live Q and A on YouTube.
The candidates from the Tory, Labour, Green and Liberal Democrat parties have backed calls to have Oxford Street vehicle free.