© Licensed to London News Pictures. 11/06/2014. LONDON, UK. Drivers of London black cabs gridlocking the area around Trafalgar Square, the Houses of Parliament and Whitehall in a protest against the Uber app-based service on Wednesday, 11 June 2014 in central London. The cabbies claim the app mini-cab service is threatening taxi jobs. Photo credit : Tolga Akmen/LNP