The Orange Line, the Ginger Line or the M25 Railway, call it what it what you will, the London Overground, born in 2007, has become one of London's transport success stories. Running complimentary to, and in some places, in combination with, London Underground, it carries more than 180 million passengers a year on 9 lines and serves 112 stations over a combined length of more than 100 miles.

An amalgamation of several commuter lines (and one London Underground Line) that ring London it now branches out to all points of the compass.

Over recent years it's also undergone unprecedented change and investment (with a few troubles along the way) with the phasing out of old and the introduction of new rolling stock.

This book takes a photographic look at these changes including a look at the routes, the stations and the trains including Classes 172, 315, 317, 378 and the brand new 710s with a brief history of each. And with so much freight sharing the Overground routes this is briefly looked at as well.