Profit warnings
A journalist looks at a terminal screen showing the rise in London's FTSE 100 index (L) over a period of one month leading up to January 16, 2017, and the decline of pound serling (R), over the same time period, in London on January 16, 2017. Prime Minister Theresa May won endorsement from US President-elect Donald Trump over her Brexit course but sterling plunged on Monday on fears that Britain could be on a collision course with its EU allies. / AFP PHOTO / DANIEL SORABJIDANIEL SORABJI/AFP/Getty Images
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