Head techer of Fircroft Primary School in Tooting, Anne Wilson, speaks of the pain felt by everybody at the school, pupils and adults alike, after hearing that Imani Green had been killed.
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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.