The King, Queen and Duke of Sussex were seen leaving Clarence House before taking a short trip to Buckingham Palace where a helicopter left the site shortly afterwards, expected to be heading for Sandringham.
The Duke of Sussex is said to have been reunited with the King after Harry made a transatlantic dash to be with Charles following his cancer diagnosis.
Harry arrived in London from California on Tuesday afternoon less than 24 hours after the shock news was announced to the nation by Buckingham Palace.
The brief reunion between Charles and his youngest son has raised hopes the pair will be reconciled despite their troubled relationship.
