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The Tube

This isn’t actually a post about the Tube – the underground network in London – but rather, for the first, and probably the last for a long time in my career, a link to a documentary about the Tube itself, for anyone who can access BBC iPlayer.  I almost never link to active links elsewhere on the net, but this is so interesting, and the Tube itself so fascinating, that just this once, I shall forgo my own principals!