Enough to make you curious?

In a week in which Britain experienced its first anthrax fatality for more than 30 years, I noticed this enticing little sign on a recently- erected brick wall on Westferry Road.

I'm used to properties encrusted with razor-wire in Guatemala, but this was a novelty.

As far as I can tell, there isn't anything actually behind this wall...except perhaps a bloke with a crooked sense of humour.