"I am confident that British-Hungarian relations will continue to strengthen under your reign. God save the king! Long may you reign", the president said on Twitter.

Novák attended the coronation in London with heads of state from around the world on Saturday. She was the first sitting Hungarian president to participate at the crowning of a British monarch.

Orbán also congratulated King Charles III in a post on Twitter: "God bless your reign, Your Majesty!"