The Duke of Cambridge was welcomed with cheers as he rode for the first time in Trooping the Colour as Colonel of the Irish Guards, reports Paul Harrison for the leading world news service, Sky News on 11 June, 2011.
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The annual Queen's birthday parade was the first "set piece" event for the Royal Family's newest member, the Duchess of Cambridge.
And the day after his 90th birthday, the Duke of Edinburgh also attended the military extravaganza.
Mr. Harrison reports that four Royal Colonels rode behind the Queen as she travelled from Buckingham Palace to Horse Guards Parade.
The 85-year-old monarch's first duty was to inspect the long line of troops – wearing famous red tunics and bearskins – from four of the five Foot Guards regiments of the Household Division taking part.
Prince William rode at the end of the line with his father Charles on his left.