The director for the Coalition for Marriage has handed a petition to Downing Street against plans to change laws to allow gay marriage.
Colin Hart told press outside No 10 that "the government should listen to the people" and to keep existing marriage legislation.
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The win sends the Scot through to the last eight where he will face either Japan's Kei Nishikori or France's Richard Gasquet.
People "would not want" international footballer Jerome Boateng as their neighbour, according to a German politician.
The paralympian posted a time of two minutes and 57 seconds on Sunday.