More from our Political Correspondent Simon Harris, who is at a meeting of the London Legacy Development Corporation.
Boris Johnson tells board the park re-opening has "got to go off with a massive bang". @londontonight
LLDC is considering a QEOP membership scheme with loyalty cards allowing venue users to make priority bookings. @londontonight
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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.