Passage: However, any member of the royal family over the age of 25 who had been refused the sovereign's consent could marry one year after giving notice to the Privy Council of their intention so to marry, unless both houses of Parliament expressly declared their disapproval. There is, however, no instance in which the sovereign's formal consent in Council was refused.

Question: What age do you have to be over to ask to get married again if you were denied?
25