As you know, every now and again I use Leake Street as my cut through from London Bridge and Waterloo to Westminster and I passed through again yesterday on my way to the Oyuna sample sale in Bond Street. The tunnel is different every time I go and there is always a troop, or gaggle (?) of photographers shooting the latest painted works.
There was even a couple of artists painting down there which is always interesting to watch. The speed at which they work varies person to person and some people work from their head, other people have a design sketched on a piece of paper that they carefully follow.