A petition against plans to close Lewisham's Accident and Emergency Department is to be handed to Downing Street. More than 20,000 local people, consultants, GPs and MPs have signed it.
The planned closure is part of a reorganisation of the South London Healthcare Trust, which has been put into administration.
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A 24-year-old man has been arrested on suspicion of murder after the body washed up on the Thames shoreline.
Seven people have now been arrested after a man died from serious head injuries
The 38-year-old officer was on his way home from a night shift when he collapsed. His death is not being treated as suspicious.