The Duke of Kent, the Queen's cousin, has suffered a mild stroke.

The 77-year-old royal was taken to an undisclosed London hospital in the early hours of Monday where he was assessed by doctors.

duke of kent

The 77-year-old has suffered a stroke

A Buckingham Palace spokesman said: "He was taken ill in the early hours of Monday and admitted to hospital for assessment."

He added that medical staff "diagnosed him as having had a mild stroke".

The Buckingham Palace spokesman added: "He's still being assessed and it's not thought to be serious.

"My understanding is he's feeling well and looking forward to resuming official engagements as soon as possible."

It is thought the Duke, whose first name is Edward, is still being treated at a London hospital.

It is understood the Queen, who herself has been ill recently with the symptoms of gastroenteritis, has been informed.

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  • 150 years of London Underground

    The Duchess of Cambridge during a visit to Baker Street Tube Station in London to mark 150th anniversary of the London Underground.

  • 150 years of London Underground

    The Duchess of Cambridge during a visit to Baker Street Tube Station in London to mark 150th anniversary of the London Underground.

  • 150 years of London Underground

    The Duchess of Cambridge during a visit to Baker Street Tube Station in London to mark 150th anniversary of the London Underground.

  • 150 years of London Underground

    The Duchess of Cambridge during a visit to Baker Street Tube Station in London to mark 150th anniversary of the London Underground.

  • 150 years of London Underground

    The Duchess of Cambridge during a visit to Baker Street Tube Station in London to mark 150th anniversary of the London Underground.

  • 150 years of London Underground

    The Duchess of Cambridge during a visit to Baker Street Tube Station in London to mark 150th anniversary of the London Underground.

  • 150 years of London Underground

    The Duchess of Cambridge during a visit to Baker Street Tube Station in London to mark 150th anniversary of the London Underground.

  • 150 years of London Underground

    The Duchess of Cambridge during a visit to Baker Street Tube Station in London to mark 150th anniversary of the London Underground.

  • 150 years of London Underground

    The Duchess of Cambridge and The Duke of Edinburgh, during a visit to Baker Street Tube Station in London to mark 150th anniversary of the London Underground.

  • 150 years of London Underground

    The Duchess of Cambridge during a visit to Baker Street Tube Station in London to mark 150th anniversary of the London Underground.

  • 150 years of London Underground

    The Duchess of Cambridge and The Duke of Edinburgh, during a visit to Baker Street Tube Station in London to mark 150th anniversary of the London Underground.

  • 150 years of London Underground

    The Duchess of Cambridge during a visit to Baker Street Tube Station in London to mark 150th anniversary of the London Underground.

  • 150 years of London Underground

    The Duchess of Cambridge, holds a badge that reads Baby on Board, given to her during a visit to Baker Street Tube Station in London to mark 150th anniversary of the London Underground.

  • 150 years of London Underground

    ALTERNATE CROPThe Duchess of Cambridge, holds a badge that reads Baby on Board, given to her during a visit to Baker Street Tube Station in London to mark 150th anniversary of the London Underground.

  • Duchess of Cambridge

    Britain's Kate, Duchess of Cambridge, accompanies Queen Elizabeth II and Prince Philip, not pictured, arrives at Baker Street underground station in London for a visit to mark the 150th anniversary of the London Underground, Wednesday, March 20, 2013. (AP Photo/Sang Tan)

  • 150 years of London Underground

    The Duchess of Cambridge, arrives by separate car, to join Queen Elizabeth II and the Duke of Edinburgh, at Baker Street Underground station in London for an event celebrating the 150th anniversary of the Tube.

  • Duchess of Cambridge

    Britain's Kate, Duchess of Cambridge, accompanies Queen Elizabeth II and Prince Philip, not pictured, leaves Baker Street underground station in London after a visit to mark the 150th anniversary of the London Underground, Wednesday, March 20, 2013. (AP Photo/Sang Tan)

  • 150 years of London Underground

    The Duchess of Cambridge, arrives by separate car, to join Queen Elizabeth II and the Duke of Edinburgh, at Baker Street Underground station in London for an event celebrating the 150th anniversary of the Tube.

  • 150 years of London Underground

    Queen Elizabeth II arrives with Duke of Edinburgh and the Duchess of Cambridge at Baker Street Underground station in London for an event celebrating the 150th anniversary of the Tube.

  • 150 years of London Underground

    The Duchess of Cambridge, arrives by separate car, to join Queen Elizabeth II and the Duke of Edinburgh, at Baker Street Underground station in London for an event celebrating the 150th anniversary of the Tube.

  • 150 years of London Underground

    The Duchess of Cambridge, arrives by separate car, to join Queen Elizabeth II and the Duke of Edinburgh, at Baker Street Underground station in London for an event celebrating the 150th anniversary of the Tube.

  • Duchess of Cambridge

    Britain's Kate, Duchess of Cambridge, right, accompanies Queen Elizabeth II, unseen, and Prince Philip, left, at Baker Street underground station in London for a visit to mark the 150th anniversary of the London Underground, Wednesday, March 20, 2013. (AP Photo/Sang Tan)

  • Duchess of Cambridge

    Britain's Kate, Duchess of Cambridge, accompanies Queen Elizabeth II and Prince Philip, not pictured, arrives at Baker Street underground station in London for a visit to mark the 150th anniversary of the London Underground, Wednesday, March 20, 2013. (AP Photo/Sang Tan)

  • Duchess of Cambridge, Queen Elizabeth II, Prince Philip

    Britain's Kate, Duchess of Cambridge, right, accompanies Queen Elizabeth II, left, and Prince Philip, center, as they arrive at Baker Street underground station in London for a visit to mark the 150th anniversary of the London Underground, Wednesday, March 20, 2013. (AP Photo/Sang Tan)

  • Duchess of Cambridge

    Britain's Kate, Duchess of Cambridge, right, accompanies Queen Elizabeth II and Prince Philip, third left and fourth, arrives at Baker Street underground station in London for a visit to mark the 150th anniversary of the London Underground, Wednesday, March 20, 2013. (AP Photo/Sang Tan)

  • Duchess of Cambridge

    Britain's Kate, Duchess of Cambridge, right, accompanies Queen Elizabeth II and Prince Philip, obscured at left, as they arrive at Baker Street underground station in London for a visit to mark the 150th anniversary of the London Underground, Wednesday, March 20, 2013. (AP Photo/Sang Tan)

  • 150 years of London Underground

    The Duchess of Cambridge, arrives by separate car, to join Queen Elizabeth II and the Duke of Edinburgh, at Baker Street Underground station in London for an event celebrating the 150th anniversary of the Tube.

  • Duchess of Cambridge

    Britain's Kate, Duchess of Cambridge, accompanies Queen Elizabeth II and Prince Philip, not pictured, arrives at Baker Street underground station in London for a visit to mark the 150th anniversary of the London Underground, Wednesday, March 20, 2013. (AP Photo/Sang Tan)

  • The Queen, Duke Of Edinburgh & Duchess Of Cambridge Visit Baker Street Underground Station

    LONDON, ENGLAND - MARCH 20: Catherine, Duchess of Cambridge makes an official visit to Baker Street Underground Station on March 20, 2013 in London, England. (Photo by Danny E. Martindale/Getty Images)

  • The Queen, Duke Of Edinburgh & Duchess Of Cambridge Visit Baker Street Underground Station

    LONDON, ENGLAND - MARCH 20: Catherine, Duchess of Cambridge makes an official visit to Baker Street Underground Station on March 20, 2013 in London, England. (Photo by Danny E. Martindale/Getty Images)

  • 150 years of London Underground

    A Baby on Board badge is shown as the Duchess of Cambridge, joined Queen Elizabeth II and the Duke of Edinburgh, at Baker Street Underground station in London for an event celebrating the 150th anniversary of the Tube.

  • Britain's Queen Elizabeth II steps off a parked train she was shown around at Baker Street underground station in London, for a visit to mark the 150th anniversary of the London Underground, Wednesday, March 20, 2013. The Queen made her first public engagement in more than a week Wednesday following her hospitalization for a stomach bug. The British head of state joined her husband Prince Philip and their granddaughter-in-law, Kate Duchess of Cambridge, for the event marking the 150th anniversary of London's sprawling subway system, affectionately known as the Tube. (AP Photo/Matt Dunham)

  • 150 years of London Underground

    ALTERNATE CROPThe Duchess of Cambridge, holds a badge that reads Baby on Board, given to her during a visit to Baker Street Tube Station in London to mark 150th anniversary of the London Underground.

  • 150 years of London Underground

    The Duchess of Cambridge arrives at Baker Street Underground Station to Mark 150th anniversary of the London Underground.

  • Duchess of Cambridge

    Britain's Kate, Duchess of Cambridge, accompanies Queen Elizabeth II and Prince Philip, not pictured, arrives at Baker Street underground station in London for a visit to mark the 150th anniversary of the London Underground, Wednesday, March 20, 2013. (AP Photo/Sang Tan)

  • 150 years of London Underground

    ALTERNATE CROPThe Duchess of Cambridge arrives at Baker Street Underground Station to Mark 150th anniversary of the London Underground.

  • 150 years of London Underground

    The Duke of Edinburgh and The Duchess of Cambridge arrive at Baker Street Underground Station to mark the 150th anniversary of the London Underground.

  • 150 years of London Underground

    The Duchess of Cambridge arrives at Baker Street Underground Station to mark the 150th anniversary of the London Underground.

  • 150 years of London Underground

    The Duchess of Cambridge arrives at Baker Street Underground Station to Mark 150th anniversary of the London Underground.

  • Duchess of Cambridge

    Britain's Kate, Duchess of Cambridge, accompanies Queen Elizabeth II and Prince Philip, not pictured, leaves Baker Street underground station in London after a visit to mark the 150th anniversary of the London Underground, Wednesday, March 20, 2013. (AP Photo/Sang Tan)

  • 150 years of London Underground

    The Duchess of Cambridge arrives at Baker Street Underground Station to mark the 150th anniversary of the London Underground.

  • 150 years of London Underground

    The Duchess of Cambridge, holds a badge that reads Baby on Board, given to her during a visit to Baker Street Tube Station in London to mark 150th anniversary of the London Underground.

  • 150 years of London Underground

    The Duchess of Cambridge arrives at Baker Street Underground Station to Mark 150th anniversary of the London Underground.

  • 150 years of London Underground

    The Duchess of Cambridge arrives at Baker Street Underground Station to Mark 150th anniversary of the London Underground.

  • 150 years of London Underground

    Queen Elizabeth II, during a visit to Baker Street Tube Station in London to mark 150th anniversary of the London Underground.

  • 150 years of London Underground

    Queen Elizabeth II, during a visit to Baker Street Tube Station in London to mark 150th anniversary of the London Underground.

  • 150 years of London Underground

    Queen Elizabeth II, during a visit to Baker Street Tube Station in London to mark 150th anniversary of the London Underground.

  • 150 years of London Underground

    Queen Elizabeth II, during a visit to Baker Street Tube Station in London to mark 150th anniversary of the London Underground.

  • 150 years of London Underground

    Queen Elizabeth II, during a visit to Baker Street Tube Station in London to mark 150th anniversary of the London Underground.

  • 150 years of London Underground

    Queen Elizabeth II, during a visit to Baker Street Tube Station in London to mark 150th anniversary of the London Underground.

  • 150 years of London Underground

    Queen Elizabeth II, during a visit to Baker Street Tube Station in London to mark 150th anniversary of the London Underground.