Mansfield's Rebecca Adlington has tweeted this picture of herself in London with Walsall's Ellie Simmonds.
And this picture of the crowds gathered outside Buckingham Palace.
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Paddy McGuire from Leicester says she is, and always has been a girl, despite being born a boy.
Every year, thousands of people of all faiths turn out to take part in the celebrations.
Jordanne Whiley is to be awarded an MBE today, for achievements throughout her career, including a calendar Grand Slam.