Next questioner quotes Boris's own 2008 manifesto at him about extra minutes in an ambulance being difference between life and death. #pqt
The Mayor of London and London Assembly members are taking questions from the public on transport, housing, policing, and London's economy. But members of the Save Lewisham Hospital Campaign have appeared in force to push Boris to support the hospital.
More top news
British astronaut Tim Peake takes part in a test to see how a Mars rover handles when it's controlled from further away.
Jack Susianta, a 17-year-old student, died on July 29 2015 after jumping into the River Lee in east London.
Health inspectors found listeria, salmonella, ecoli and even potentially deadly listeria.