Prime Minister David Cameron has hailed the introduction of same-sex marriage as one of his proudest achievements in 2014.

The Tory leader made the claim during a Q&A in Wirral, when he was asked what things he was proudest of doing.

Mr Cameron replied that he would “treasure” the moment that the UK became the fastest growing economy in Europe, but that same-sex marriage had a personal impact.

He said: “I did get a lot of letters from men who said, because of the changes you made, I have been able to marry the person I love. That was great.”

The Conservative leader revealed last week that he gets “lots” of invites to same-sex weddings,and that he plans to attend one soon.

He said: “Lots of people have invited me and sent me lovely letters saying if it wasn’t for you, I wouldn’t be able to marry the person I love.

“But I haven’t been to one yet. I’m sure I will soon.”

The Chairman of Grassroots Conservatives claimed last month that Mr Cameron’s support for marriage means the party “has little chance of winning a majority at the general election”.

Bob Woollard accused the Prime Minister of “alienating” his loyalists and handing the keys to UKIP.

He claimed supporters were still upset at the legalisation of same-sex marriage, and called for new laws to “protect those who believe in traditional marriage”.

When asked about gay couples kissing last summer, Mr Cameron said: “No, that’s fine! I’ve been very clear about this.

“If I can kiss my wife in public, I don’t see why you can’t kiss your husband in public.”

Writing for PinkNews last March, he said: “The introduction of same-sex civil marriage says something about the sort of country we are.

“It says we are a country that will continue to honour its proud traditions of respect, tolerance and equal worth.

“It also sends a powerful message to young people growing up who are uncertain about their sexuality. It clearly says ‘you are equal’ whether straight or gay.”