Claudia Winkleman Returns With 21 Celebrity Traitors Contestants
Claudia Winkleman will bring celebrity traitors back to One and iPlayer later in 2026 with twenty-one famous faces in the cast. The second series arrives after the first run drew an average audience of 14.9m and peaked at 15.4m for its finale, a scale that turns the return into a schedule priority rather than a simple recommission.
Claudia Winkleman and 21 names
Twenty-one celebrities will compete for a cash prize of up to £100,000 for a charity of their choice. That size of cast is the headline feature here: it is the biggest celebrity line-up the format has announced so far, and it gives the production more room to spread screen time across personalities instead of leaning on a small core of well-known names.
Claudia Winkleman will host the series, which Studio Lambert Scotland is producing for One and iPlayer. The return keeps the show inside the same two-platform home that carried the first series, so the distribution plan is already set while the cast build is still the main draw.
October 2025 audience surge
14.9m viewers watched the first series across its run after it debuted on iPlayer and One in October 2025. The finale then rose to a peak audience of 15.4m, giving the format a proof point that few unscripted entertainment shows can match at launch.
The performance also explains why this return matters more than a routine celebrity edition. RTS and BAFTA Craft Award winning status gives the title awards cachet, but the real leverage is the audience base: a series that can hold 14.9m across a run and lift to 15.4m at the end has already shown it can travel well beyond a niche reality audience.
Studio Lambert Scotland lineup
Studio Lambert Scotland is once again making the show, and the series sits squarely in One and iPlayer’s entertainment push. The previous launch proved the format can deliver both broadcast-scale numbers and streaming demand, with the first celebrity run arriving after the broader Traitors brand had already built momentum.
For viewers, the practical change is simple: a larger cast, a charity prize of up to £100,000, and a return later in 2026 on the same two platforms. For the broadcaster, the job now is to turn a proven audience into a second celebrity run that can hold attention without relying on novelty alone.
