Trooping the Colour will again not go ahead in its traditional form this year, Buckingham Palace has announced.
Officials are considering an alternative parade at Windsor Castle, as happened last year, when the Queen watched a military ceremony take place in the quadrangle. It became affectionately known as "mini Trooping".
The annual Garter service, also usually held in June, when the eponymous knights gather at Windsor Castle, will not take place this year either, the palace added.
Buckingham Palace said in a statement: "Following consultation with government and other relevant parties it has been agreed that the Queen's Official Birthday Parade, also known as Trooping the Colour, will not go ahead this year in its traditional form in central London."
Thousands of well-wishers usually fill central London to watch the Queen and members of the royal family travel to and from Trooping the Colour.
The event stems from the traditional preparations for battle, when colours (or flags) were carried ("trooped") down the rank to be seen and recognised by the soldiers.
In the 18th century, guards from the royal palaces would assemble daily, on horse guards, to troop the colours. The parade first marked the sovereign's official birthday in 1748.
While the ceremony marks the Queen's official birthday, her actual birthday is in April, when she is due to turn 95.
While it is hoped that most of England's lockdown restrictions will have been lifted by June, royal events appear to be playing it safe for a little longer.
The Queen and the Duke of Edinburgh are still based at Windsor Castle, where they have been since the start of the pandemic last spring.
Prince Philip returned earlier this week after a month-long stay in hospital.