In the cut-throat world of London convenience stores, owners have to stay one step ahead of their rivals. They start selling six beers for six quid, you start selling six for a fiver. They offer a fax service (presumably back in time to the 1990s), you start offering international money transfers. They stay open 24 hours a day, you go one better and open 25 hours. Hang on, what?
Take a look at the most over Instagrammed things in London here.