The Tate was forced to release its sponsorship arrangements with oil giant BP on 26 January 2015. The landmark ruling was the result of a three-year long Freedom of Information (FOI) appeals process by London-based campaign group Platform, FOI company Request Initiative and law firms Leigh Day and Monckton chambers. The ruling required Tate to publish the sum of money BP paid as a sponsor between 1990 and 2006, along with details of internal decision-making on the controversial relationship. Figures showed payments from BP increased from just ยฃ150,000 in 1991 to only ยฃ330,000 in 2006. The donations, which continue today, mean BP has its flower petal logo hanging around the galleries and, according to campaigners, provides them with a ‘social licence to operate’ by making them appear socially conscious and respectable. This DeSmog UK series reports at the forefront of this battle for information.