© Licensed to London News Pictures. 21/08/2017. London, UK. A group of people gather in the grounds of The Houses of Parliament Parliament at mid day as Big Ben chimes for the last time ahead of repair works. The Great Bell, also known as Big Ben, is expected to be silent for up to four years as renovation work is carried out on the surrounding Elizabeth Clock Tower. The worlds most famous clock has sounded on the hour for 157 years and last fell silent for maintenance work in 2007. Photo credit: Ben Cawthra/LNP
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