You'll find Roxy Ball Room at St Mary Axe (opposite the Gherkin, and just a stone's throw from Liverpool Street station).

Just as brilliant and frustrating and yellow and horrible and rather handy and maddening as you'd expect it to be.

It sounds like a special episode of Dastardly and Muttley in Their Flying Machines. But in 1969, this really happened.

London's done the Olympics on three occasions, but South London has never got a look-in, other than staging a handful of ...