Cadogan Hall concert targeted due to oil sponsor and conductor’s Putin links Unsanctioned ‘balcony scene’ evades security and entertains audience Concert-goers include senior officials from BP, and UK and Russian governments Three performers from theatrical campaign group BP or not BP? took to the stage – and a balcony – at Cadogan Hall this evening … More We invade the stage with same-sex ‘Romeo and Juliet’ at BP-sponsored concert