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A 'lights out' event took place across the country last night to mark the centenary of the day Britain entered the First World War.
People were invited to switch their lights off between 10pm and 11pm - the hour war was declared on 4 August 1914.
An installation called Spectra by Japanese artist Ryoji Ikeda
Paul Gaitley (whose two grand-uncles were killed on the same day in October 1914 Able Seaman Arthur Gaitley and Private Jack Gaitley) and Alison Schulte holding candles outside Westminster Abbey