Date: 27/01/2014

Deep under the streets of the capital, a disused railway tunnel stretches for six miles. After being shut for a decade, there are now plans to reopen the London Post Office Railway - known to many as Mail Rail - as a tourist ride. [From Mark Bartlett]

External links

What is it like on the 'secret' Tube?

BBC News

The London Post Office Railway has been shut for a decade, but plans are afoot to reopen it as a tourist ride.