It is sadly, rarely out of our headlines someone either injured or stabbed to death on London's streets. And it is taking a toll especially on young Londoners, many of whom have told us how unsafe they feel.

A group is highlighting its worries with a song: 'If you Want Peace', by Josephine and The Artizans. Josephine Permaul and Brooke Hanson, whose brother Josh was stabbed to death in a bar in Hillingdon in 2015 spoke to Lucrezia Millarini.