Little Grey Men

I read a book when I was little called Momo (just found it on Amazon) in which little grey men stole our time. I probably haven't thought about this book for 10 years or more. But it came back to me when I passed the Hayward gallery a couple of weeks ago, and suddenly realised that buildings on both sides of the river were covered in grey men.

Didn't know what to make of it at first. Seemed a bit too big a project for it to be a Banksy prank. But it turns out Antony Gormley is having an exhibition at the Hayward Gallery, and the grey men are part of it. There's already talk about keeping them after the exhibition is over...