Prince Philip has died aged 99, Buckingham Palace announces

Prince Philip, described by the Queen as her “strength and stay” during her record-breaking reign, passed away at Windsor Castle on Friday.

The Duke married Princess Elizabeth in 1947, five years before she became Queen, and was the longest-serving consort in British history.

He officially retired from public engagements in the summer of 2017.

In a statement, Buckingham Palace said: "It is with deep sorrow that Her Majesty The Queen has announced the death of her beloved husband, His Royal Highness The Prince Philip, Duke of Edinburgh.

"His Royal Highness passed away peacefully this morning at Windsor Castle.

"Further announcements will made in due course.

"The Royal Family join with people around the world in mourning his loss."

Born on the Greek island of Corfu on June 10, 1921, Prince Philip was the only son of Prince Andrew of Greece and his mother was Princess Alice of Battenberg, receiving the title of ‘Prince of Greece and Denmark’.

He had to leave Greece with his family when he was just 18-months-old due to the political instability of the country.

His uncle, Constantine I, the King of Greece, was forced to abdicate.

During the First World War, Prince Philip's grandfather, Prince Louis of Battenberg, changed the family's name to Mountbatten.

Prince Phillip adopted this name when he became a naturalised British subject and renounced his Royal title in order to marry the then Princess Elizabeth.

He was then bestowed with the titles Duke of Edinburgh, Earl of Merioneth and Baron Greenwich.

The Duke had a successful naval career, during which he saw active service in the Second World War.

His Royal Highness then focused on his work supporting the Queen after she ascended the throne in 1952.

The Duke became the longest serving British consort – in companion to the Sovereign – in 2009 and founded the Duke of Edinburgh's Award in 1956.

Buckingham Palace announced in May 2017 that the Duke had decided, with full support of the Queen, to officially retire from public duties.