AnnaLauraWolff/AnnaLauraWolff

England and Wales will have same-sex marriages ceremonies from Saturday, with Scotland due to follow later this year.

But Northern Ireland has held out and shows no sign of changing, with Democrat Unionist assembly members blocking marriage equality legislation at the devolved assembly.

There is little sign of this position changing in the short term, meaning that part of the U.K. will still only allow marriages between a man and a woman for some time to come.

The Republic of Ireland is set to hold a referendum on marriage equality in 2015, meaning Northern Ireland could soon become the only major part of the British Isles where same-sex marriage is not allowed. (The Isle of Man, Guernsey and Jersey have also not passed same-sex marriage legislation.)