The publisher of PinkNews said they were "delighted" that same-sex marriage in England and Wales has been signed into law.
Benjamin Cohen, who also founded the Out4Marriage campaign, said, "Giving gay couples the right to marry will make our nation a more tolerant, open and welcoming place to live in and significantly increase the life prospects of so many people".
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The pensioner, who is in her 70s, says her daughter has suffered from Huntington's disease.
US singer John Legend said he was "moved" by footage of the teenager singing one of his songs.
John Noakes was Blue Peter's longest-serving presenter.