Mr Fitzwilliams said he thought the Duke and Duchess of Cambridge would take on more engagements "in the fullness of time" and that the Prince of Wales may take on a few more, but already has a packed schedule. He also thought the Prince of Wales attending the summit was a sign that the head of the Commonwealth would continue to be held by the monarch in the future. He added: "I think there's absolutely no doubt that the Prince of Wales will take on the head of the Commonwealth eventually. I think it's absolutely essential that the British monarch will remain head of the Commonwealth."