Police have released a photograph of Kyle McDonald, one week after the 19-year-old was shot dead in a street in Battersea. Police are asking witnesses to contact them.
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More than a tenth of the Piccadilly Line train fleet is out of action because of emergency repairs to damaged wheels.
Rows of students stood and turned their backs before filing out of the lecture theatre.
Effie the endangered Western lowland gorilla has given birth to a healthy baby boy at London Zoo.