Why did the British Government outlaw narcotics, change the clocks and ban whistling in the street during the First World War? This short film tells the story of the Defence of the Realm Act 1914 and the enormous impact this legislation had on British life during the war. Featuring Tristram Hunt MP, Lord Kenneth Morgan and the voice of Nick Robinson. For more information about Parliament and the First World War log onto www.parliament.uk/ww1
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