According to EuroNews:
…the Changing of the Guard ceremony resumed after an 18-month hiatus.
Soldiers had maintained sentry duty outside royal residences during the pandemic but the ceremony, which is popular with tourists, was abandoned at the start of Britain’s lockdown.
Hundreds of spectators lined the gates outside the palace to watch its long awaited return.
The guarding of the Queen and therefore the Changing of the Guard is performed by the Household Division of the British army. These are all active and highly trained soldiers, many of whom have served on active tours across the world.
