Thousands turned out at St James Park in London to watch the Colonel’s Review led by
. The event saw him review more than 1,400 troops of the Household Division and the King’s Troop Royal Horse Artillery to ensure they are ready for Trooping the Colour — an event held each June to mark the monarch’s official birthday.
In one video, a trombonist is seen on the ground as medical personnel rush over to him with a stretcher.
He picks himself up before attempting to play on but is ultimately led away.
“A big thank you to every solider who took part in the Colonel’s Review this morning in the heat. Difficult conditions but you all did a really good job. Thank you. W,” the Prince of Wales tweeted.
According to the BBC’s lead weather presenter, Simon King, temperatures hit 30.4C in some parts of England, which made Saturday the hottest day of the year so far.
The Trooping the Colour ceremony will be held on 17 June in the UK.