The Prime Minister was in Enfield this morning for the opening of a warehouse which was destroyed during the riots last year. The site which is used by Sony has been closed for a year while it was rebuilt.
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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.