It’s the capital city of the United Kingdom and the largest urban area in our fair isle. But how much do you really know about it?
In the second of our three-part series, Griff Rhys Jones spends 24 hours getting to know London like never before – from the traffic centre that keeps the city moving to the secret church beneath Parliament, and everything in between.
See below for exclusive video content, maps, podcasts, pictures and more...
Millions of people, the rush hour, Parliament and Big Ben going bong. Get under the skin of the UK capital
Go behind the scenes of TFL's Traffic Control Centre and find out how they keep the city on the go
Take a look at the secret House of Commons hiding place of suffragette activist Emily Wilding Davidson
Inspired to get out and see more of the city? Download a map, the accompanying podcast and get going!
Ever wondered how many potatoes London gets through in a single day? Find out here
Share your pictures of the city's best kept secrets - the nooks, crannies, the weird and the wonderful on Flickr
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