Shoe swapping fun in london?

I have a lot of pairs, ranging from high street (faith/aldo/Kurt Geiger) to designer (Louboutin/choo/Cox) and would love to swap shoes with other people with the same shoe size (8 UK) of course! I don't mean an indefinite swap, more like, I'd show you all my shoes, and if you ever wanted to borrow a pair for a week, or weekend, or particular occasion, then you could just swing by, or we could meet and swap shoes. ;-) Just thought it would be a nice way of meeting people and doubling my shoe collection!