Two strangers meet and marry. Will the newlyweds grow to be a real couple over the next five weeks? Or will a quickie divorce be required?

Would you marry a complete stranger you first meet on your wedding day? A panel of experts match up a couple. Will true love flourish for these two singletons looking for The One?

Two more couples put their trust in science. But will they make it down the aisle and marry at first sight?

The newlyweds head off on their honeymoons, sharing romantic activities in exotic locations. Will they fall in love? Or for one couple, will the football on TV get in the way?

In this 90-minute special, four couples who met for the first time on their wedding day live together for four weeks as husband and wife. And then they must decide whether to stay together or split.

The experts match Stephanie with Benjamin and Carrie and Wayne. Can the couples persuade friends and family that marrying a stranger isn't such a crazy idea? And will they actually like each other?

With Richard and Harriet about to exchange their wedding vows, newlyweds Benjamin and Stephanie are already on honeymoon in Mallorca - and starting to get a little closer

Stephanie and Benjamin are living together now and learning that the path to true love does not always run smoothly. And Harriet and Richard head to Lisbon for their honeymoon.

The two couples who married at first sight enter the final weeks of the experiment. Do they have a long-term future. Will they stay together or seek a divorce?

The first two couples heading down the aisle are nurse Steph and property manager Jonathan, and office manager Verity and IT consultant Jack.

While Verity and Jack exchange wedding vows seconds after their first meeting, newlyweds Jonathan and Stephanie start getting to know each other on their honeymoon in Seville

Steph and Jonathan are now living together, learning that true love doesn't always run smoothly, as Verity and Jack get to know each other on honeymoon

The two married couples are in the final weeks of the experiment. Do their 'instant marriages' have a long-term future? Will they even make it as far as Decision Day?

Primary school teacher Michelle, IT sales manager Owen, businessman David and events manager Shareen receive the exciting news that they have been matched by the experts. What will their families say?

Michelle and Owen have an awkward start to married life, leaving them questioning their fledgling romance. And David and Shareen hit a bump in the road on their honeymoon.

As the newly-weds prepare to move in together, the Covid-19 pandemic hits Britain. Owen and Michelle's lockdown love-in leads to a dilemma, while David and Shareen enjoy a romantic getaway.

After four months as husband and wife, Owen and Michelle face a make-or-break decision, as they deal with living 250 miles apart. And David and Shareen grapple with finding common ground.

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.