Underground History - Disused Stations on London's Underground

Introduction
Since moving to live near London a few years ago, one of my interests has been the London Underground, the oldest and one of the busiest underground railway networks in the world. I'm not a train spotter by any means, but I find the history and background of London's subterranean railway fascinating.

One of the things I find most interesting is the changing history of the railway, of which there is still much hidden evidence. For example, look through the window as you travel between Tottenham Court Road and Holborn on the Central Line and you'll see a station - where no passengers have alighted since 1932. This used to be British Museum station. Or perhaps you may notice the the tunnel wall change from cast iron tubing to bricks as you travel on the Piccadilly Line between Green Park and Hyde Park Corner. This also used to be a station. Down Street, closed in the same year as British Museum. These stations are often referred to as ghost stations.

There are about 40 abandoned stations on the Underground network along its entire 255 miles (408Km) of trackway - some subsurface and some above ground. Some have vanished without trace whereas others are almost intact, grimy time capsules of the era when they were closed.

Orientation
One point to note is that in these pages, all lines are referred by their contemporary names. Many if not all of the lines have however had different names during their existence.