Watch Greatest Cities of the World with Griff Rhys Jones online: Episode 2 London

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.

click here to see where to watch or .