Okay, so you've done the tourist round. You've braved Buckingham Palace, snagged a photo with Big Ben, and maybe even tried to hail a cab like a local. But London's true charm? It's hidden in plain sight, a gem waiting, just begging for a savvy Gen X-er to uncover it. Forget the glitzy bars of Shoreditch; think cozy pubs with fireplaces, hidden jaz