A fine mural on a corner store

It's a neat mural. Why it is on the wall of a North London corner store is beyond me. I'll have to stop by and ask. I'm curious. It is stylish, bright and colourful and exceedingly well done. But why is it here? This is not commonly done in London. And my wife believes this may not be the first mural to appear here. She thinks the mural may be temporary and will be painted over at some point in the near future. Yup. I've just go to stop by this store and as some questions.