Married At First Sight UK (MAFS UK) 2025 started airing on Sunday, September 21st, 2025. The show airs new episodes on E4 five nights a week, from Sunday to Thursday at 9 PM. There are no new episodes on Fridays and Saturdays. Episodes are also available to stream on Channel4.com. This schedule is a bit different from previous years, as the show now airs Sunday through Thursday instead of Monday to Thursday. The series is expected to run for about nine weeks.