NEW: Security arrangements for high-profile public figures will be urgently examined to ensure those most at risk are better protected amid rising threats to their safety. Home secretary Shabana Mahmood tells MPs the independent review of the UK’s protective security system will be carried out by Sir Stephen Lovegrove. The former national security adviser will look at whether current security arrangements are fit for purpose, in particular whether there is adequate protection for those most at risk.  This includes high-profile individuals (including royals), government ministers, MPs, locally elected representatives and other prominent British political figures - but not individual cases. Dedicated police support will be expanded to leaders of political parties who are not MPs, as well as peers, former MPs, former members of the devolved parliaments and political party spokespeople. The murder of Ann Widdecombe is one of several recent events to raise serious questions about the security of those in public life.