A think tank has said that high rise housing blocks should be bulldozed and replaced with houses in a bid to tackle social problems and "no go" areas. A Policy Exchange report said there was evidence that multi storey flats attracted higher crime rates.
Here are some of your views from today's Facebook discussion.
More top news
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.