Assembly Member John Biggs presses Boris Johnson on Cycle Superhighway 2, repeating the Coroner's warning about lulling cyclists into a false sense of security.
Boris Johnson says: "Could we have segregated lanes? The difficulty is you take away a significant amount of road space without improving safety. Cyclists don't always use segregated gullies."
More top news
The 20-year-old was found fatally wounded on Roth Walk, near Finsbury Park, north London at around 3am on Saturday, Scotland Yard said.
Police have arrested a man wanted in connection with a burglary at the home of pensioner Richard Osborn-Brooks.
The rally comes after it emerged that the Home Office destroyed thousands of landing cards documenting the arrival of windrush-era migrants