The Shard seen from the Walkie-Talkie, City of London. The counterweight of the Walkie-Talkie crane provided a spectacular view of the Shard. (Photo by Bradley L. Garrett)





The Shard, Southwark. When construction was close to completion, the cranes on top of the Shard jutted over the side, allowing for a unique view on to the central core. (Photo by Bradley L. Garrett)





The Shard. A group spent Christmas on top of the Shard. (Photo by Dan Salisbury)





Battersea Power Station. The chimney rims are thinner on top than you might expect. (Photo by Bradley L. Garrett)





Battersea Power Station. The view from the top of one of the chimneys, prior to its redvelopment. (Photo by Marc Explo)





Denning Point, Aldgate. Watching the city lights from the top of a council block. (Photo by Bradley L. Garrett)





British Museum, Bloomsbury. The roof of the British Museum was as spectacular from above as it is from inside. (Photo by Alex Oattes)





NEO Bankside, Southwark. These high-end apartment blocks near the Tate Modern provided a vantage point to peer into the ongoing construction of the gallery extension. (Photo by Mike Deere)





Gasometers, Hornsey. These gasometers in north London are currently under threat of demolition. (Photo by Bradley L. Garrett)





St Alphage House, City of London. An office block connected to the Barbican Estate. (Photo by Bradley L. Garrett)





Westfield shopping centre, Hammersmith. One explorer planned to sledge the mounds of the roof in winter, but didn’t get a chance before the snow melted. (Photo by Alastair Batchelor)





Construction crane, City of London. An explorer scales a crane. (Photo by Luca Carenzo)





One Tower Bridge, Southwark. The One Tower Bridge development offered a view down to City Hall, and up to the sky. (Photo by Theo Kindynis)





Trocadero, London. The roof of the Trocadero at Piccadilly Circus was like a huge, empty playground. (Photo by Bradley L. Garrett)





Petticoat Tower, City of London. A rooftop birthday barbecue on the top of Petticoat Tower was cut short by police, who detained attendees. (Photo by Bradley L. Garrett)





King’s Reach Tower, Southwark. A view of the Oxo Tower and the Thames. (Photo by Winch)





Cranbrook Estate, Bethnal Green. Two explorers check to see if the police are responding to their “popping” the roof hatch. (Photo by Thomas Dekeyser)





Alexandra Palace. The rooftop of “Ally Pally”, an ornament of the Victorian age and the cradle of TV broadcasting. (Photo by Bradley L. Garrett)





Centre Point, Soho. This 33-storey 1960s tower has been a target of urban explorers for years. The addition of scaffolding allowed access. (Photo by Theo Kindynis)