Johnson: "I have listened to the roar and howl of the planes passing over where I live." @londontonight
Johnson: Of all the victims of aircraft noise in Europe, one third live around Heathrow. @londontonight
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The results of the first preference votes counted so far gives an early indication that Mr Khan is line to take power at City Hall.
Mr Goldsmith's campaign, run by Sir Lynton's communications firm has come under fire from Labour.
Google been delving deep into its own data, and has some intriguing answers.