The Duke of Edinburgh has been admitted to hospital after feeling unwell, Buckingham Palace said.
He was admitted on the advice of his doctor and a palace statement said it was a “precautionary measure”.
A palace spokesman said: “His Royal Highness The Duke of Edinburgh was admitted to the King Edward VII Hospital in London, on Tuesday evening.
“The Duke’s admission is a precautionary measure, on the advice of His Royal Highness’s Doctor, after feeling unwell.
“The Duke is expected to remain in the hospital for a few days of observation and rest.”
The news comes just days after the Duke and Duchess of Sussex announced they are expecting their second child.
The Duke and Duchess of Sussex’s new baby will be eighth in line to the throne.
Baby Sussex will either be the Queen and the Duke of Edinburgh’s 10th or 11th great-grandchild, depending on whether he or she is born before or after Zara Tindall’s baby.
The monarch and Philip’s great-grandchildren so far are: Savannah and Isla Phillips; George, Charlotte and Louis; Mia and Lena Tindall; Archie, and Princess Eugenie’s baby boy.
The line of succession will remain unchanged by the pregnancy – the Prince of Wales, the Duke of Cambridge, Prince George, Princess Charlotte, Prince Louis, Harry, and Archie Mountbatten-Windsor.
Harry retained his place in the line of succession despite quitting royal life, and dropping his HRH style.
When Harry and Meghan’s new addition arrives, the Duke of York, who was born second in line in 1960, will move down to ninth place.
Andrew stopped carrying out royal duties in 2019 following his controversial Newsnight interview over his friendship with convicted paedophile Jeffrey Epstein.
The baby boy or girl will enter the line of succession behind older brother Archie.
Andrew’s eldest daughter, Princess Beatrice, will move to 10th in line.
His youngest, Princess Eugenie, will fall out of the top 10 to become 11th in line, and her newborn son will move to 12th place.
The Queen and Prince Philip have a special connection with Hampshire. The couple spent their wedding night at Broadlands, Romsey in 1947.
The formal gardens and historic landscape of Broadlands are Grade II listed on the Register of Historic Parks and Gardens and the house itself is Grade I listed.
The 86-acre manor is the family home of the Mountbatten's, Prince Philip’s family and is occupied by currently by Lady Brabourne.
Their love and appreciation for the county runs through the family, with Prince Philip's eldest son Prince Charles and Diana honeymooning in Hampshire in the 1980s.
The couple spent the first three days of their honeymoon at Broadlands in 1981.
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