The Irish Guards' regimental mascot, Conmeal the Irish wolfhound, was given his own sprig of shamrock by the Duchess of Cambridge.
The St Patrick's Day tradition dates back to 1901.
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The number of millionaires living in London has shot up in the part five years but other parts of the country are catching up.
A three-year-old girl had to undergo surgery to remove an air rifle pellet after she was shot in a west London park.
There has been a sharp rise in the use of bailiff amongst London's local authorities.