Liam, who's 19, gets a taste of independence with Flo, who's 83. Londoner Nicole heads to Hastings to live with Claudine and Ted. Can they help show her a more affordable way to live?
Poet Marvell leaves east London to lodge with retired couple Lynne and John in their converted Glastonbury chapel. In Birmingham, Sophie cohabits with no-nonsense pensioner Eunice.
Dog groomer Liah-Rose moves in with pensioner landlords Carolynne and David and their high-octane lifestyle. Jake leaves Middlesbrough for 61-year-old Christene's home in Pontefract.
Formerly homeless Cairo moves in with 66-year-old in-line skater Bonnie in west London. And Lucy, 25, tests out lodging in Norfolk as an alternative to living in her camper van.