A boat travels along the River Thames through the fog past the Houses of Parliament in central London on November 2, 2015. Thick fog across much of Britain caused travel disruption on November 2, 2015 with 10 percent of flights cancelled from London Heathrow, Europe's busiest airport. AFP PHOTO / JUSTIN TALLIS (Photo credit should read JUSTIN TALLIS/AFP/Getty Images)
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AFP JUSTIN TALLIS