The world is mourning the death of Prince Philip, who has died at Windsor Castle at the age of 99.
The Duke of Edinburgh passed away just over three weeks since he was discharged from hospital.
Phillip who was born in Greece and served in the Royal Navy was a rock of strength for Queen Elizabeth.
His marriage to Queen Elizabeth was the longest Royal union in British History with their wedding held at Westminster Abbey in 1947.
He continued on active service with the Royal Navy until Elizabeth became Queen in 1952.
Prince Philip retired from public engagements in 2017.
At an event to mark the Duke of Edinburgh’s 70 years of service, The Queen praised him for his support.
“He is someone who doesn’t take easily to compliments, but he has quite simply been my strength and stay all these years, and I and his whole family, and this and many other countries owe him a debt greater than he would ever claim, or we shall ever know,” said Her Majesty.
The United Kingdom has entered a state of national mourning, which will last until the Duke’s funeral.
Members of British parliament will be required to wear black armbands on their left arm.
Mourners are laying flowers outside of Buckingham Palace.
Flags are flying at half-mast across the UK and the Commonwealth to honour His Royal Highness.
The Union Jack is billowing over London’s landmarks including Buckingham Palace, 10 Downing Street and the Tower of London.
The Australian flag has also been lowered at Parliament House in Canberra.
Prime Minister Scott Morrison has offered his condolences to Her Majesty The Queen.
“The Duke’s life was one of duty and of service, of loyalty and of honour. Memories of him will of course tell stories of his candour, and a unique and forceful and authentic personality. But above all he was a man who was steadfast, always standing by his Queen,” said the Prime Minister.
Mr Morrison has also signed the condolence book at admiralty house in Sydney this morning.
The book is being monitored by the Department of Prime Minister and Cabinet, with the messages being sent to the Palace and archived by the Commonwealth.
Tributes from Australians will be accepted for the remainder of the month.
Members of the Royal family have responded to the death of the Duke of Edinburgh, with social media accounts for Prince Charles and Camilla, and The Duke and Duchess of Cambridge sharing the official announcement from Buckingham Palace.
The Duke and Duchess of Sussex have posted a statement on their website, saying ‘thank you for your service, you will be greatly missed’.
British Prime Minister Boris Johnson says he received the news with great sadness, and sends his condolences to the Royal family.
“It is to Her Majesty and her family that our nation’s thoughts must turn today, because they have lost not just a much loved and highly respected public figure, but a devoted husband, and a proud and loving father, grandfather, and in recent years great grandfather,” said Mr Johnson.
US President Joe Biden, and former Presidents Donald Trump and Barrack Obama, have also released statements in tribute to the Duke of Edinburgh.
Prince Philip’s funeral is expected to be held at St George’s Chapel – it will be a scaled down affair, as government organisers want to avoid the gathering of large crowds.