Before our 16 strangers walk down the aisle, they celebrate their last night of freedom, at the ultimate stag and hen parties, where a surprise is in store. And the first two couples get married.

The experts match another two couples, but when the big day arrives, one bride and groom quickly discover that their differences may be an issue

More strangers take the ultimate gamble - but will opposites attract when they meet at the altar? And Married at First Sight UK celebrates its first same sex wedding.

The next phase of the experiment begins as the first four couples go on their honeymoons. Some relationships blossom, while other couples aren't sure they're compatible.

The final four singles plunge into marriage with a complete stranger. One couple struggle to connect, and a bride goes against her family's advice to find love.

Four more couples head off on their honeymoon. But while it's romance for some, others struggle to find their spark. And one couple quickly hit rough waters.

With weddings and honeymoons over, the newly-weds move in together. And all eight couples meet each other for the first time, at an unforgettable dinner party.

In the Commitment Ceremony, experts Mel, Paul and Charlene put the marriages under the spotlight, but a surprise confession rocks the group

'Yes Week' begins and brings some of the couples closer together but pushes others to breaking point. Plus: an ultimatum turns up the heat for one couple.

The second dinner party brings surprise guests who send shockwaves through the group. A dream couple hit a bump in the road and one bride questions her future.

Marriages are put under the spotlight once more at the second Commitment Ceremony, as the experts deliver some hard-hitting truths to help the couples progress

The couples spend time apart at group girls' and boys' days out. There are a few home truths from the guys and a revelation leaves the girls dumbfounded.

Tensions run high at the third dinner party, as the repercussions of Girls Day are felt. And some anonymous letters lead to tempers boiling over.

Feelings deepen and the stakes are raised at the third and final Commitment Ceremony. As some couples look to the future, others face heart-wrenching decisions.

The couples get a taste of the future as they embark on their homestays. But immersing themselves in each other's worlds raises big questions for some...

The homestays continue, but as friends and family voice their doubts, one couple reach crisis point. And Partner Swap leaves some questioning their marriages.

The couples have their final dates and their last chance to consider their futures. But will the dates strengthen bonds, or lead to difficult disscussions?

The couples come together for one last time at the final dinner party. But celebrations are cut short when the honesty box delivers some uncomfortable questions.

Three of the couples spend time apart to reflect on their future. When they're reunited, they must decide whether to stay married or go their separate ways.

It's vowel renewal time for the last of the newly-weds. As one couple reveal their decision, the other two face the toughest choice of their lives.

The experts welcome back the 16 participents for a final review of their experience marrying a stranger. What have they learnt about themselves?