A new collection of data maps of London reveals a city heaving with information.
A quick quiz question for you. How many football pitches could fit inside the Greater London boundary? Well, 220,000 of them would fill the space between Cockfosters and Croydon, Heathrow and Hornchurch.
That statistic is just one of thousands of facts and figures contained in a new book about London, which according to its creators is the most data-heavy capital of the world.
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