UK police on Tuesday said they were imposing a no-fly zone above Windsor Castle, one of Queen Elizabeth II's primary residences, after a security review.
The announcement came after a man, 19, was arrested for breaking into the castle grounds armed with a crossbow on Christmas Day, as the monarch was spending a low-key festive season at Windsor.
Thames Valley Police force said that effective from January 27, no aircraft can enter airspace up to 760 metres above the castle, within a radius of 2.3 kilometres without special permission.
"This order is an additional method to keep the community living near to this iconic location safe," the force said.
Windsor Castle is west of London, near Britain's busiest airport at Heathrow.
The Queen, 95, usually celebrates Christmas at her Sandringham estate in eastern England, but she remained at Windsor Castle this time after the trip was cancelled because of a surge in Omicron Covid infections.
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Queen Elizabeth at the 2021 Trooping the Colour parade. The year has been one of loss and sorrow for the British monarch, capped by the cancelled plans for an extended family lunch to celebrate Christmas at Windsor Castle. All photos: Getty Images -
Queen Elizabeth recording the video message broadcast to attendees at an evening reception to mark the opening day of the Cop26 summit in Glasgow on November 1, 2021. -
Queen Elizabeth attends the Qipco British Champions Day at Ascot Racecourse in October. -
The British monarch on a screen via video link from Windsor Castle during a virtual audience at Buckingham Palace in October. -
Children from Crathie Primary School present Queen Elizabeth with a card at the Balmoral Estate in October, where she and Prince Charles planted a tree to mark the start of the official planting season for the Queen's Green Canopy, near Crathie, Scotland. -
The queen during an inspection in August of Balaklava Company, 5 Battalion the Royal Regiment of Scotland, at the gates of Balmoral as she takes up summer residence at the castle. -
Actors wait to meet Queen Elizabeth during a visit to the set of the long-running television series 'Coronation Street' in July in Manchester. -
Queen Elizabeth receives the Chancellor Angela Merkel of Germany during an audience at Windsor Castle in July. -
Queen Elizabeth greets Prime Minister Boris Johnson during the first in-person weekly audience with the prime minister since the start of the coronavirus pandemic at Buckingham Palace in June. -
Queen Elizabeth with US President Joe Biden and Jill Biden, the first lady, in the Grand Corridor during their visit to Windsor Castle in June. -
Queen Elizabeth attends a military ceremony in the quadrangle of Windsor Castle to mark her official birthday in June. -
Queen Elizbeth with world leaders at The Eden Project during the G7 Summit in June in St Austell, Cornwall. -
Prince Charles, Camilla, Duchess of Cornwall, Queen Elizabeth, Prince William, Duke of Cambridge, and Catherine, Duchess of Cambridge, arrive for a reception at The Eden Project during the G7 Summit in June. -
Queen Elizabeth, escorted by Prince Charles, follows the imperial state crown along the royal gallery during the state opening of Parliament at the House of Lords in May. -
Capt Angus Essenhigh, Queen Elizabeth and Commodore Steve Moorhouse during a visit to 'HMS Queen Elizabeth' before the ship's maiden deployment in May in Portsmouth. -
Queen Elizabeth watches pallbearers carry the coffin of her late husband, Prince Philip, the Duke of Edinburgh, into St George’s Chapel during the funeral at Windsor Castle in April. -
Pallbearers with the coffin of Prince Philip at Windsor Castle in April. -
Queen Elizabeth signs her annual Commonwealth Day Message in St George's Hall at Windsor Castle to mark Commonwealth Day in March.
The teenager was arrested on suspicion of breach or trespass of a protected site and possession of an offensive weapon. He was detained under the Mental Health Act.
Queen Elizabeth, already Britain's longest-reigning monarch, is due to celebrate her Platinum Jubilee this year to mark 70 years since her accession to the throne in 1952.
She was forced to cut back on public appearances after a health scare in October, in which she spent a night in hospital.
