Calling London

I was going to go to London this Saturday with major_clanger - I have to show house-clearing man #2 round, then we were going to do some fun stuff in the afternoon like wander around London, go to a museum or gallery or shopping or something.

But he's going to be a nice clanger and visit his mother instead. This will leave me in London at a loose end from lunchtime, anyone fancy meeting for a pootle/drink/shop/culturally enhancing experience? If not, I could always go home and do some heirloom-sorting...