Hundreds of cyclists campaigning to make the streets safer are protesting on the South Bank tonight.
The protest comes on the day MPs are debating the issue of bike safety.
Luke Hanrahan assesses what has already been done, and whether it is working.
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The 24-year-old was unarmed and the incident is not being treated as terror-related.
Some platforms have been taken out of service with disruption expected to continue until the end of the day.
The Met Office has extended its weather warnings for snow and ice to cover vast swathes of the country, including London and the South East.