Shadow Health Secretary Andy Burnham said plans to close the A&E department at Lewisham Hospital were "taking the NHS into new ground" and were "dangerous" given the pressure on A&E services.
"When we were in Government we did close some A&Es because sometimes it makes sense to do that, you can save more lives by centralising services on one particular site, every locality cannot necessarily sustain an A&E," he said.
"However what is different about Lewisham is that this A&E is being closed purely on cost grounds.
"To solve financial problems in one trust, the Government are saying they are going to take away the successful A&E department of another. That is taking the NHS into completely new ground.
"I think it is dangerous to do that, given the pressure that we seeing on A&E in London and right across the country."
More top news
Police were called to a housing estate and found a 26-year-old man with stab wounds inside a property.
Rosa Bramley spoke about the reality of life in parts of London. Her friend became the third teenager to be stabbed to death in seven days.
Met Constable Thomas Hooper is said to have taken the medium-sized two-tier tin of biscuits from a storage cupboard.