Men are less likely to talk than women with 54% of women having had a conversation compared to 37% of men.
Boris At Rally Against Third Runway
Boris Johnson has urged the Government to rule out a third runway at Heathrow before the next election.
The Mayor of London has been at a rally in west London against expansion plans and said it would be "totally nuts" for the Conservatives to go to the polls without having buried the idea.
He said: "It is just too difficult to deliver - 15 years at least it would take to bring about.
"Above all you would be inflicting noise pollution not just on west London but on huge parts of London that don't even know they are going to be affected.
"That is not the right way forward for the greatest city on earth."
Around a thousand residents who live under the airport's flight path have been at the protest in Barnes.
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A man has been fined £1,800 for flying drones over Parliament, near Buckingham Palace and over football stadiums.
Government to investigate after some restaurants accused of withholding tips
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