Former top lawyer says anti-terror laws 'may not be legal'

Former Attorney General Dominic Grieve has voiced concerns about the legality of new anti-terror measures, while Labour has accused the Government of being "unclear" in their plans.

The comments come after David Cameron unveiled a series of new measures including giving police the powers to seize passports at UK borders of British citizens they suspect could be travelling abroad to fight with terror groups.

The move follows the announcement on Friday that the UK's terror threat has been upgraded from 'substantial' to 'severe', with the Home Secretary saying an attempted attack was now "highly likely".