Any bar that proclaims itself the birthplace of the ’70s ditty band Madness would not on the surface seem to be a place you’d want to enter without prior insobriety. But it has street cred. It was the first bar in London to win a late liquor license from the government, so it became an important nightspot. Really no more than a threadbare, greenish pub with a teeny backroom stage, it hosts bands struggling to make it—and a few (Blur, for one, and Madness for two) that actually have. On weekends, late-night DJs spin.