In and around Bristol the couples are fitness fanatics Billy and Tasha, music-loving Dennis and Tina, and former news reporter Keith and his wife Jane
Taking turns are Bettina and Italian-born husband Giovanni, school inspectors Dave and Linda, and Polish-born Ewelina and her husband Chris
The series continues in Manchester, where married couple Victoria and Andrew kick off as hosts, joined by fitness-loving girlfriends Ciara and Carley and retro-loving pair Terri and David
Newlyweds Clare and Ric kick off with an evening of traditional Italian cuisine. Joining them in the dinner party competition are Donna and Simon, and Laura and Blaine.
In south east London, Ben and Alicia kick off with food inspired from some of their favourite places. They are joined by Fareena and Cahit, and Cherry and Lawrence.
First to host are Sati and his wife of 26 years, Jesse. Nick and Dinara host night two followed by Harry and Charlotte's grand finale.
The show heads to South Yorkshire, where Phil and Kate get the competition started. Day two sees loved-up bus drivers Lee and Dawn hosting, and finally it's Katie and Ed's chance to shine.
Host couples Rosie and Darren and Jamie and Alison both serve up homegrown goodies, but it's flamboyant hosts Sean and Helen who everyone is intrigued by
In and around Glasgow, Andrew and Sophia kick off with a Swedish menu. Brian and Victoria's 'vaguely' Scottish theme doesn't go as planned. Finally, it's David and Sarah's turn to impress.
Lisa and Jesue present an international menu, Georgie and Alex cook recipes by Alex's mum, and Paul and Gareth try to impress with an Italian-inspired menu
The show heads to Essex, where Edith and Martin are desperate to impress, Ana and Ian whip up a menu inspired by Ana's Latino roots, and Danny and Shira showcase their comfort food
Karen and wife Lindsay show off their family favourites, romantics Matt and Jay serve up a traditional Russian feast, and David and Elaine bicker in the kitchen
In Liverpool, revelations from husbands and girlfriends annoy and surprise wives and boyfriends. There's a Mexican fiesta, plus large portions of blunt feedback and a side order of revenge.
Chocolate in samosas, beef cheeks and egg and bacon soup are all on the menu in Southampton, in the competition that also features a Punjabi feast with a twist, and a Tudor evening
Kitchen bickering spills over to the table in Brighton, in a week that also features an Italian menu that divides opinion, and contrasting levels of dinner party experience
In Northampton, one couple thinks no one can beat their holiday park setting and healthy menu. Tex Mex, posh pub grub, revenge - and possibly too much motorhome chat - are also on the menu.
Astronautical engineer Adam and GP trainee Steph host first in a week including ill-considered games of guess-the-age and behind-the-scenes drama, in and around Berkshire
In Manchester, quirky couple Sophie and Lucas opt for a menu based on the idea that looks can be deceiving. Joining them are Ruth and her husband Martin, and Ryan and boyfriend Warren.
In and around Cambridge, young couple Fiona and Anthony kick off with a 'Carnival' style dinner party. Joining them are Paul and Karen and Ari and Amanda.
In and around Glasgow, Mandi and Ally kick off with some family favourites, starting with Scottish charcuterie. Transgender couple Judith and Charlene are next hosts, followed by Lucy and Stephen.
Kicking off the week are Max and his wife, professional singer Janelle, with a complex Caribbean menu. Night two sees Michael and Laura host, then David and Sammi.
In Nottinghamshire, building company owners Kirsty and Gary are first to host with their refined menu. Day two sees Rita and Hugh, and finally, it's Maxine and Lee.
Husband and wife Rupert and Jo are first to showcase their cooking skills with a night based around their favourite travel destinations
Cockney duo Shelly and husband Scott dish up a night full of food that they think nobody will have heard of before! Joining them are Ilyas and Amanda, and Sabbi and Ashley.
Sam and Karl's 80s inspired menu of rock-hard bread, soggy salmon and a hairy dessert leaves a nasty taste in the mouth for guests Ange and Dave and Cleo and Nick
Happy-go-lucky hosts Jim and Justine kick off the competition in Portsmouth in smashing fashion with an unexpected crockery disaster. Joining them are Leanne and Gary and Stewart and Lynn.
Kealey and Nathan begin with an international menu. But the cheesecake war is on with Graham and wife Sarah. Youngsters Alex and Emily offer a tour of European delights.
The show heads to Essex where Kellie and Scott kick off with a love themed menu. The guests are decorating company owner Stuart and his wife Jamie, and happy-go-lucky Lisa and cabbie Nick.
Sam and Kelly are hoping that a golf-themed menu will score them a hole in one. Bohemians Brian and Mandie, then Dylan and Emma host nights two and three.
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