In the first of the series, Griff Rhys Jones uncovers the secrets of the city that never sleeps – New York.

From the mile-wide Manhattan streets to the iconic skyscrapers via all the nooks and crannies in between, you’ll go on a voyage of discovery, finding out everything that makes this unique city tick.

It’s the capital city of the United Kingdom and the largest urban area of the isle. But how much do you really know about it?

In the second of the 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.