Over 18,000 people have signed a petition supporting the current definition of marriage and opposing any moves to redefine it.
The Coalition for Marriage (C4M) was launched yesterday with an online petition, which can be signed here.
It comes as a Sky News poll showed over 60 per cent opposition to same-sex marriage.
C4M was launched ahead of a Government consultation on redefining marriage which is set to begin next month.
Colin Hart, Campaign Director of C4M, said the petition has been signed by thousands of people who “share our concerns at the proposals by the Government to redefine traditional marriage without asking for their views”.
He continued: “None of the main political parties said in their manifestos that they would make this massive cultural change.
“It is politically dishonest of the Government to declare that the consultation will be about the mechanics of the change instead of the principle.
“Has there ever been a worse case of aggressive political correctness being imposed by stealth?”
On Sky News’ Boulton & Co programme yesterday viewers were asked whether they supported same-sex marriage. At the end of the programme the survey stood at 62 per cent saying “no” with 38 per cent saying “yes”.
Alongside the thousands of grassroots supporters, the petition has been signed by a number of MPs and former Archbishop of Canterbury Lord Carey.
Writing in a national newspaper, Lord Carey warned: “Marriage is a cornerstone of our society. Because of this, I believe the general public will oppose the present attempt to fundamentally alter – and undermine – the institution.”
He commented: “The honourable estate of matrimony precedes both the state and the church, and neither of these institutions have the right to redefine it in such a fundamental way.
“For thousands of years, the union of one man and one woman has been the bedrock of societies across cultures, all around the world.”