People walking past Britain’s tallest building, The Shard, got a shock when a man parachuted from the skyscraper.
Police were called following the daredevil stunt in central London on Saturday morning.
Video shows the thrill-seeker gliding hundreds of feet above the ground before disappearing behind another building.
Witnesses saw the jumper land in St Thomas Street after leaping from the 1,016ft-high (309.6m) skyscraper.
Officers failed to detain him as he had apparently escaped to the nearest Tube station.
Police said they were not aware of anyone being injured.
The Shard remains open and its managers are “investigating an incident involving a member of the public”, its official Twitter page said.