Life in the capital is returning to normal today, at the end of its Olympic summer.
Following yesterday's victory parade, statues of the Olympic mascots (like this one outside County Hall) are now being cleared away.
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In a wide-ranging Peston on Sunday interview, he said Parliament security needs reviewing and the PM's counter-terror strategy is flawed.
The terror attack carried out by Khalid Masood at Westminster that left four people dead lasted less than two minutes say police.
Two knives were found at the scene in Islington, North London, and the suspects fled on foot before being arrested.