I photographed this thing on a Playground off Shaftesbury Avenue. We had a rest there at lunchtime, it was very quiet, just some pigeons flying low like they were up to something. I wonder what they imagined children would do with this? I tried to spell something for a while but the best I could do was TIT. I noticed people had replaced some of the letters with marker pens and the like, so I guess they wanted to spell something particular, too, but I just couldn't work out what.