Why London Had A Hidden Extra Underground Line Just For The Mail

For 76 years, a private underground line ran under the streets of London, completely separate from the Tube. And most Londoners have never seen or even heard of it - because you could only ride it if you were a mailbag. I went to find out more about the story of the Post Office Railway...

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IMAGE CREDITS
Central London Railway by David Cane -
https://commons.wikimedia.org/wiki/File:Central_London_Railway_1911.png
West Derby Delivery Office by Rept0n1x -
https://commons.wikimedia.org/wiki/File:West_Derby_delivery_office_(2).JPG
Mail Rail trains by Matt Brown -
https://www.flickr.com/photos/57868312@N00/13267574833
Mail Rail station by Steve Knight -
https://flickr.com/photos/kitmasterbloke/36754656882/
Mail Rail train by Steve Knight -
https://flickr.com/photos/kitmasterbloke/36754671722/

Видео Why London Had A Hidden Extra Underground Line Just For The Mail канала The Tim Traveller