Six Greenpeace protesters who scaled Britain's tallest building remain in police custody after being arrested over the stunt.
The group of female activists reached the top of the Shard in central London on Thursday evening following 15 hours of climbing in protest at oil drilling in the Arctic.
On reaching the summit of the 72-storey building at around 7.10pm, two of the campaigners unfurled a 32ft by 32ft blue flag with ''Save the Arctic'' written in white across it.
They were later arrested by the Metropolitan Police on suspicion of aggravated trespass.
They were driven away by police in an unmarked white van to the sound of cheers from supporters gathered at the foot of the landmark.
The women, who evaded security guards to begin their climb, said it was intended to put Shell and other oil companies in the spotlight.
The demonstrators live-streamed the climb from helmet cameras, with birds-eye views of their ascent broadcast live at www.iceclimb.savethearctic.org.
One climber, Victoria Henry, 32, a Canadian living in Hackney, London, said before the climb: "It's going to be really hard work, it's going to be nerve-shredding for all of us and we may not succeed, but we're going to do everything we can to pull it off.
"Millions of people have called on Shell to get out of the Arctic but they're still trying to drill there anyway. If we reach the top we'll be able to see all three of Shell's London offices below us, meaning they'll be able to see us. Maybe then they'll stop ignoring the movement ranged against them."
Along with Ms Henry, the other activists were Ali Garrigan, 27, from Nottinghamshire, who lives in Manchester; Wiola Smul, 23, from Poznan, Poland; Sabine Huyghe, 33, from Ghent, Belgium; Sandra Lamborn, 29, from Stockholm, Sweden; and Liesbeth Deddens, 31, from Groningen, Netherlands.