During the coronation, Prince William swore allegiance to his father and gave him a gentle kiss on the cheek.
The Prince of Wales was the sole heir to defy convention and swear loyalty to the King during the historic ceremony.
Following the coronation of the new king or queen, the heir apparent went to his father and pledged his allegiance, saying: “I, William, Prince of Wales, pledge my loyalty to you and will bear unto you faith and truth, as your liege man of life and limb.” God, please help me.
Following the pledge, William touched his father’s crown and bent down to kiss him on the cheek, appearing to avoid making eye contact while doing so.
Charles then cracked a brief smile and was seen mouthing: ‘Thank you, William,’ to his son, who will one day be the King of the United Kingdom himself.
The oath of allegiance pledged by the heir to the King was given on behalf of all members of the Royal family.
Elsewhere during the ceremony, William helped to clothe his father with the Stole Royal, a golden priestly scarf.
Charles was also presented and clothed with the Robe Royal, a long cloak.
Upon receiving, the Archbishop said: ‘Receive this Robe. May the Lord clothe you with the robe of righteousness, and with the garments of salvation.
Meanwhile, Prince Harry sat in the third row in the Abbey to watch the coronation take place, along with more junior royals.
He attended the occasion alone, while the Duchess of Sussex and their two children remained at their home in California.