Jon Richardson and Lucy Beaumont are putting their own differences aside to judge everyone else's, as unwitting celebrity couples go head-to-head to find out who's got the best relationship
Countdown's Rachel Riley and pro dancer Pasha Kovalev take on comedians Richard Herring and Catie Wilkins in a series of frustrating challenges, including a nightmare makeover and a dirty bathroom
Sara Pascoe and Steen Raskopoulos compete against Duncan James and Rodrigo Reis in a dizzying dishwasher dash.
Vicky Pattison and fiancé Ercan Ramadan take on Michael and Hilary Whitehall as they take part in a tense battle teaching non-driver Lucy to reverse park and write each other 'romantic' poems. We'll also find out what Jack Whitehall makes of his parents' relationship.
Actress Amanda Abbington and her partner, escapologist Jonathan Goodwin, take on Pussycat Doll Kimberly Wyatt and her husband, model Max Rogers. The relationships are put to the test when Kimberly and Jonathan attempt to woo Jon and Lucy, before everyone gets an eyeful during a very unconventional art class.
Can Ore Oduba and his wife Portia and comedian couple Harriet Kemsley and Bobby Mair pack a car without having an argument? Don't count on it...
Jamie Laing, Sophie Habboo, Rachel Parris and Marcus Brigstocke are in flat-pack purgatory.
