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
Nearly 50 people were forced from their homes as London Fire Brigade cordoned off the area around Brickfield Cottages, in Plumstead.
The decision on how officers will give evidence to the investigation into the controversial police tactic will be made public today.
Sadiq Khan claimed the number of rough sleepers in London would 'increase by half' if Zac Goldsmith was elected mayor.