The Court of Appeal has ruled that Health Secretary Jeremy Hunt did not have the power to implement cuts at Lewisham Hospital in south east London.
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With harmful pollutants at record levels the Mayor of London's campaign aims to highlight the impact air quality can have on health.
A firework was shot into a London bus sending frightened passengers running with fear.
Abdul Samad, 28, was stabbed outside his family home in Little Venice last night and died an hour later in hospital.