Boris Johnson backs Brexit after 'agonisingly difficult' decision – live

Rolling coverage of the day’s EU referendum developments, as David Cameron fires starting gun on campaigning on the Andrew Marr ShowCameron’s interview on the Marr Show - Summary and analysisIDS says staying in EU makes UK more vulnerable to terrorist attack 7.32pm GMTLabour’s shadow Europe minister Pat Glass is also seeking to frame Boris Johnson’s decision as one that “says more about the Tory leadership contest and Boris’ own positioning than what is in the