Secret world of the urban explorer

They explore abandoned amusement parks, sewers and 'ghost' tube stations and make it their mission to publicise the hidden corners of their cities. These extraordinary pictures are the work of urban explorer Dr Bradley Garrett, who seeks out secret areas both above and below ground to photograph. He was part of team who made headlines back in 2012 when he posted a series of snaps from the top of The Shard skyscraper while it was still under construction. Garrett, now a researcher at the University of Oxford, took these shots during his time with the London Consolidation Crew (LCC), a loose collection of urban explorers based in the English capital.