A Halloween bus advert which features a zombie covered in blood has been criticised for being too scary. The Tulleys Farm Shocktober Fest banner appears on the side of more than 100 buses operating from south London into Sussex.
The Advertising Standards Authority is looking at whether any rules have been broken after receiving several complaints.
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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.