TfL
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First designed back in 1933, the familiar schematic lines of Harry Beck’s creation have become an ever-evolving and iconic feature of London, yet its fame reaches around the world.
Obviously it is a simplified version of the actual underground lines to make it easier for you to find your way around our nation’s capital but just how different it is from the subterranean reality may take you by surprise.
Using a geographically accurate map produced by TfL, HuffPost UK has highlighted nine sections that - although not exactly a lie - will make you think a little as you twist and turn on the Tube.