We've all been there. It's 1.30pm on a Thursday, you're walking along the street at the end of your lunch break, and all of a sudden a stampede of smurfs come round the corner. Where did they come from? Where are they going? Who knows.
And it's not just the fancy dress, London is home to a whole host of weird and wonderful things if you keep your eyes peeled. Have a look at the following photos of strange things people of spotted in this fabulous city.