Justin Bieber has added more dates to the UK leg of his upcoming ‘Justice’ world tour due to high demand.The pop star announced a run of UK dates last week which included two shows at London’s O2 Arena, along with further gigs in Manchester, Birmingham, Sheffield, Glasgow and Aberdeen.Bieber has now confirmed a third night at the O2 in London, and second nights at Manchester’s AO Arena and Birmingham’s Resorts World Arena. He will perform a total of 10 UK shows as part of the tour which kicks