Hello and welcome to LIVE updates of the first leg of the Champions League semi final between newly crowned La Liga champions, Barcelona and Premier League title contenders Liverpool. Can Jurgen Klopp's Reds maintain their run of never having lost at the Nou Camp in four previous visits and seize the initiative in the tie? Or will Lionel Messi et al stretch their unbeaten home run in the CL to 32 matches with a victory that would further boost their push for the treble? Kick off 20:00 BST.