Open House: The Great Sex Experiment reportedly may not return to Channel 4 for a fourth season.

The raunchy series followed committed couples at a luxury retreated where they tested whether opening up their relationships and having sex with other people would strengthen their bond.

It first debuted in April 2022, before returning for a second season in 2023 and a third last year.

A source told The Sun: “This was a programme that typified C4’s unconventional approach to making television, and nobody could say it wasn’t truly experimental.

“But despite some initial interest, it wasn’t enough to engage viewers long-term and the ratings quickly trailed off. C4 insists it has not made a decision on its return yet — but there is no sign of it coming back. Plus, the channel has already been exploring sexuality in other ways.”

Radio Times has approached Channel 4 for comment.

Channel 4 is no stranger to releasing raunchy programmes, with Virgin Island being a recent success for the broadcaster.

The second season – which follows young people as they head to retreat in search of breaking down their emotional barriers and learn the ways of intimacy – aired earlier this year.

The series was a huge success for Channel 4, with the first season becoming a ratings hit for the broadcaster, breaking records among 16-to-34-year-olds.

The series as a whole was Channel 4’s biggest streaming hit of 2025.

Open House: The Great Experiment is available to watch on Channel 4 streaming.

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