On Tue, 06 Nov 2007 13:00:26 -0800, umpston
wrote:

Quoted from: http://en.wikipedia.org/wiki/Overground_Network

This link led me to [[London Overground]], which makes an interesting
point:

"When the [East London Railway] extension opens, the London Overground
will [...] be below the London Underground part of Whitechapel tube
station" (!)