Diane Abbott to dismiss Theresa May's 'arbitrary' immigration targets in major speech
p.p1 {margin: 0.0px 0.0px 20.0px 0.0px; line-height: 28.0px; font: 18.0px Times; color: #111111} span.s1 {font-kerning: none} p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 18.0px Times} Shadow home secretary will also announce Labour's plans to overhaul of government's visa policy