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Deep-level shelters were planned to run alongside some of London's underground network
Full Transcript
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Deep-level shelters were planned to run alongside
00:00:03.075 --> 00:00:06.035
some of London's underground network.
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Movie Summary
During World War II, the British built or reinforced a series of structures consisting of over 26,000 buildings to form a line of defence against an expected German invasion. Rob Bell travels around the UK to learn their secrets.