There should be a major junction under Oxford Circus acting as the centre point of a large double-loop tube line, had plans shown off in 1988 gone ahead.
London's famous three - Piccadilly Circus, Oxford Circus, Regent's Circus. Hang on, Regent's Circus? Yes, the huge circle at the top of Regent Street lined with expensive houses. Haven't you seen it?
50 years ago this weekend, a massive operation was undertaken to open a giant umbrella over what was to become Oxford Circus tube station.