Queen Elizabeth was not pleased with the plans to legalize same-sex marriage in 2013, according to a report by the Daily Mail.
The report says that because of her deep Christian faith, she did not approve marriage between the same sexes, but was not opposed to civil partnerships.
According to the newspaper, their source was her "friend," who said that the queen was exasperated at not being able to take part in the debates on the issue.
She is also quoted as saying, "I can only advise and warn."
"It was the 'marriage' thing that she thought was wrong, because marriage ought to be sacrosanct between a man and a woman," the friend recalled of the Queen.
Meanwhile, The Daily Beast reports that courtiers from the palace have denied the claims made by The Daily Mail.
"It seems unlikely that one of her friends would pass on her thoughts to The Mail," a senior courtier told The Daily Beast.
In 2014, the Marriage Act (Same Sex Couples) was made into law in Scotland, England and Wales, but the Church of England was opposed to it. Gay marriage is not yet legal in Northern Ireland, a member nation of the UK.
The act has protections for Anglican churches from being compelled to conduct same-sex weddings, even when some of the members of the church might be in favor of them.
A majority (47 percent) of the Anglicans did not support the law at the time when it was enforced, and only 38 percent were sympathetic to it, according to a 2013 YouGov poll.
However, this year the YouGov poll conducted on 1,500 Anglicans said that as many as 45 percent Anglicans now support same-sex marriage, and 37 percent oppose it.