It's one way to get a view of the O2 arena, but not for the faint-hearted
This amazing photograph of a workman in Docklands was taken by an office worker in the Barclays Tower. He was on the 19th floor when he spotted the veritgo-inducing scene.
"I couldn't believe it when I looked out of the window," said Francesco Coppola. "When you see it 19 floors up it's even more scary than in the photograph."
It makes you wonder what the workman could be doing up there. If you have any ideas, submit your comments below.