The King has honoured the late Queen and Philip's wishes by handed his father's title the Duke of Edinburgh to his brother Prince Edward.
In celebration of Edward's 59th birthday, Charles conferred the title on the former Earl of Wessex on Friday. Sophie, the former Countess of Wessex, is now the Duchess of Edinburgh and their son James Viscount Severn, 15, is the new Earl of Wessex.
It comes after another title change when the Duke and Duchess of Sussex began officially using the titles Prince and Princess for their children Archie and Lilibet this week. The new duke and duchess will be in Edinburgh - their first outing with their new titles in the city which inspired their name - later on Friday at a reception to mark the first year of conflict in Ukraine.