Ayan Hadi, the wife of convicted terrorist Richard Dart, has been sentenced to 12 months imprisonment suspended for two years for failing to provide information that might have helped in his arrest and prosecution. She was also given a supervision order.
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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.