The British House of Commons on Tuesday gave its final approval to a bill which seeks to make Britain the 15th nation to legalize gay marriage.

MPs gave their approval to a number of minor amendments introduced in the parliament's upper chamber, the House of Lords.

Officials said that they expect the bill to receive royal assent from Queen Elizabeth II on Wednesday or Thursday.

However, the first wedding bells will not ring until next summer.

“[T]here are various issues to sort out, such as its impact on pensions,” a spokesman for the culture ministry, which is overseeing the new law, told the AFP.

Jubilant supporters said passage would provide momentum for similar proposals in Scotland and Northern Ireland, the United Kingdom's other two nations.

The Coalition for Marriage, the nation's most vociferous opponent, vowed to use the issue in the upcoming general election, saying that passage of the bill would “come back to bite” Prime Minister David Cameron in 2015.

According to a YouGov poll for the Sunday Times, 54 percent of Britons favor marriage equality.

Fourteen nations, including 9 European countries, allow gay couples to marry, the latest being France. Gay couples can also marry in some regions of the United States, Mexico and Brazil. A judge in Colombia has paved the way for that nation's first same-sex wedding.