With Bank a key stop on the Northern Line, you might think this would be the wealthiest Tube line. While twenty years ago the Square Mile was home to pretty much every financial institution in London, the wealth has now spread east to Canary Wharf and west to the West End. The Piccadilly line, though, runs right through Green Park and Piccadilly Circus – which has become prime private equity territory over the last thirty years. It's not all bad on the Northern Line though. Bank might have been voted the 'Most Disliked' Tube station in London – and Kennington might be haunted – but in terms of hard cash, the Northern Line is anything but The Misery Line.