If you spotted a large number of weird and wonderful telephone boxes in Trafalgar Square today, don't panic! It's all in a good cause. To celebrate the 25th anniversary of charity ChildLine, BT invited artists and designers to reimagine Sir Giles Gilbert Scott’s iconic red telephone box. Above is Benjamin Shine's Box Lounger, a leather bound and studded sofa. These arty telephone boxes will be scattered around London before being put up for auction. CLICK for The Telegraph slide show of 26 photos. CLICK for a BBC video. CLICK for BT Artbox and further details.