Boris Johnson was on the startling line with Mo Farah but his focus seemed to be on another rival.
The Mayor was doing his bit for keeping the Olympic spirit alive, backing a report which warns despite such a fantastic year of sport, fewer people are actually getting active.
He was at a school in south London earlier, the day after being invited to lunch by the Prime Minister. But is the truce between the two rivals already over? Our Political Correspondent Simon Harris on why Boris Johnson is set to attack the Government once again.
More top news
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.