A petition with over 21,000 signatures opposing plans to close Lewisham's Accident and Emergency Department will be handed in to Downing Street later.
Protestors have demonstrated against the closure in recent weeks.
The MP for Lewisham East, Heidi Alexander, will join doctors and consultants to deliver the document and other letters.
More top news
Julie Etchingham meets the original Foxy Lady - her cousin Kathy - who talks of life with former boyfriend Jimi Hendrix in their old flat.
Transport bosses have admitted a decision about funding for Luton's railway station's much-needed facelift will not be made any time soon.
A man who helped officers apprehend a suspected drug dealer by sticking out his foot and tripping him has been hailed a "legend" by police.