Consultants and MPs opposed to plans to close Lewisham's Accident and Emergency department have handed letters and a 20,000-signature petition to Downing Street.
Protesters, including Lewisham East MP Heidi Alexander, say the closure would leave them with one accident department for 750,000 residents.
The planned closure is part of a reorganisation aimed at saving the South London Healthcare Trust after it went into administration.
More top news
Barrie died at his home in Uxbridge, west London, after a short battle with cancer.
The first of the 66 trains for the recently-named Elizabeth Line was unveiled at a factory in Derby.
Krysia Osostowicz, 57, had her £200,000 violin snatched on Tuesday night when she was on her way back from a radio performance.