- Tonight's strike action was due to start at 9pm, until 3am Wednesday morning
- The RMT says it has been suspended while further negotiations to take place over working conditions
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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.