The British government announced Saturday that ministers would be launching a national "consultation" to decide on how to implement marriage equality by the next election. The measure is being endorsed by the leadership of both coalition parties.
The Lib Dems have long campaigned for reform of the marriage laws, arguing that they are outdated and discriminate against same-sex couples.
Conservative leader David Cameron backed the move while in opposition as part of his modernising drive and the pledge to permit equal marriage was included in the party's 2010 election manifesto.
While British gay rights activist Peter Tatchell isn't satisfied, Freedom to Marry was quick to point out how far the US lags behind.
"I am not convinced that there needs to be any consultation at all," Tatchell said. "The ban on same-sex marriage is homophobic discrimination and should be repealed."
"It's particularly impressive that Prime Minister David Cameron, the leader of the British Conservative Party, is leading the charge to move to full marriage in the UK," said Marc Solomon, National Campaign Director for Freedom to Marry. "We repeat our call on President Obama to join Cameron in offering principled leadership, finish his 'evolution,' and join the majority of Americans who support the freedom to marry."