The Duke of Edinburgh today rode out on horseback surrounded by members of the Royal Family to mark the Queen’s official birthday.
Wearing full regalia and bearskins, the Prince of Wales, Prince William and Princess Anne saluted as they rode out of onto the Mall.
Also riding in the ceremony for the first time was the Duke of York in his new role as Colonel of the Grenadier Guards.
They join more than 1,400 guardsmen and cavalry for the magnificent Trooping of The Colour today in London.
Wearing full regalia and bearskins, the Prince of Wales, Prince William, Prince Andrew and Princess Anne saluted as they rode out of onto the Mall
![Also riding in the ceremony for the first time was the Duke of York in his new role as Colonel of the Grenadier Guards](https://i.dailymail.co.uk/i/newpix/2018/06/09/12/4D1396D300000578-0-image-a-3_1528542248589.jpg)
Also riding in the ceremony for the first time was the Duke of York in his new role as Colonel of the Grenadier Guards
![Proud: The Queen smiles at her boy Prince William, the Duke of Cambridge, during the Trooping of the Colour today](https://i.dailymail.co.uk/i/newpix/2018/06/09/12/4D13CEB800000578-5824239-image-m-24_1528543972570.jpg)
Proud: The Queen smiles at her boy Prince William, the Duke of Cambridge, during the Trooping of the Colour today
The Duke of Edinburgh, who celebrates his 97th birthday on Sunday, has retired from official public duties and did not attend.
But the Queen was accompanied by the royal colonels, all on horseback: Prince of Wales, Colonel of the Welsh Guards, the Princess Royal, Colonel of the Blues and Royals, and the Duke of Cambridge, Colonel of the Irish Guards.
Among the guests was Defence Secretary Gavin Williamson, the Prime Minister Theresa May normally attends but is at a G7 meeting of world leaders in Canada.
The colour trooped this year was the flag of the 1st Battalion Coldstream Guards.
![Princess Anne rode out wearing an impressive ceremonial regalia and was covered in medals](https://i.dailymail.co.uk/i/newpix/2018/06/09/12/4D13A60100000578-5824239-image-a-32_1528544368355.jpg)
Princess Anne rode out wearing an impressive ceremonial regalia and was covered in medals
![They join more than 1,400 guardsmen and cavalry for the magnificent Trooping of The Colour today in London](https://i.dailymail.co.uk/i/newpix/2018/06/09/11/4D13957800000578-0-image-a-1_1528541996443.jpg)
They join more than 1,400 guardsmen and cavalry for the magnificent Trooping of The Colour today in London
![The Duke of Edinburgh, who celebrates his 97th birthday on Sunday, has retired from official public duties and did not attend](https://i.dailymail.co.uk/i/newpix/2018/06/09/12/4D1396C400000578-0-image-a-4_1528542251443.jpg)
The Duke of Edinburgh, who celebrates his 97th birthday on Sunday, has retired from official public duties and did not attend
![Among the guests was Defence Secretary Gavin Williamson, the Prime Minister Theresa May normally attends but is at a G7 meeting of world leaders in Canada](https://i.dailymail.co.uk/i/newpix/2018/06/09/12/4D13A3E900000578-0-image-a-5_1528542255718.jpg)
Among the guests was Defence Secretary Gavin Williamson, the Prime Minister Theresa May normally attends but is at a G7 meeting of world leaders in Canada
Trooping the Colour originated from traditional preparations for battle.
Colours, or flags, were carried, or “trooped”, down the rank so that they could be seen and recognised by the soldiers.
In the 18th century, guards from the royal palaces assembled daily on Horse Guards to “troop the colours”, and in 1748 it was announced that the parade would also mark the Sovereign’s official birthday.
The Queen’s actual birthday was on April 21 when she turned 92.