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A shop worker sweeps in front of a Topshop Ltd. store shortly after its opening, on Oxford Street, in London, U.K., on Friday, Nov. 25, 2016. Black Friday first became a part of U.K. shopping culture in 2014 when a rush for bargains saw fights break out as crowds gathered outside stores, in 2016 however, only 21 percent of British consumers interviewed by consultant Retail Economics said they plan to shop for Black Friday bargains. Photographer: Luke MacGregor

A shop worker sweeps in front of a Topshop Ltd. store shortly after its opening, on Oxford Street, in London, U.K., on Friday, Nov. 25, 2016. Black Friday first became a part of U.K. shopping culture in 2014 when a rush for bargains saw fights break out as crowds gathered outside stores, in 2016 however, only 21 percent of British consumers interviewed by consultant Retail Economics said they plan to shop for Black Friday bargains. Photographer: Luke MacGregor