The second season of The Celebrity Traitors ended the way BBC One wanted: with the show’s biggest overnight audience to date. Friday’s 80-minute finale pulled in an average of 11.23 million viewers, ahead of the 11 million who watched last year’s closing episode. The peak, as the winner was revealed, hit 11.6 million.
It will almost certainly be the biggest UK television audience of the year outside the FIFA World Cup.
The numbers behind the record
- Finale overnight: 11.23M average; 11.6M peak
- Season 2 average: 9.7M across nine episodes
- Season 1 average: 7.5M, so the season grew by more than 2M
- Seven-day reach: first four episodes average 15.2M
That final line is the one media buyers should not skip. The overnight gets the headline; the seven-day number captures iPlayer viewing and time-shifted audiences. The first four episodes averaged 15.2 million once that viewing is included, adding more than 5 million to the overnight total.
Why the growth matters
An overnight rating counts viewing on the night, before catch-up and streaming are added. For a game built on suspicion and live reaction, a same-night audience of this size is a marker of event television, not just a library title.
Season 2 had an early unscripted wobble: Richard E. Grant unmasked himself as a traitor early in the game. The ratings held anyway. In fact, the season average rose by more than 2 million against Season 1, a rare trajectory for a returning entertainment format.
The format itself is an asset. The Traitors began as De Verraders, created by IDTV with the RTL Creative Unit, and All3Media International sells it worldwide. A record UK celebrity edition supports both the BBC’s commissioning case and the value of the format in international markets.
What this means for planning
For media planners and entertainment marketers, the practical read is to treat overnight and consolidated viewing as two different jobs. Overnight proves the live event can hold attention and generate immediate social conversation; seven-day delivers the full reach that underpins a campaign. A title that grows on both measures, as The Celebrity Traitors has, is a stronger two-screen buy than most.
Produced by Studio Lambert Scotland for BBC One and iPlayer, the series gives entertainment commissioning a clear proof point: a returning format can grow its overnight audience while many entertainment brands fight to hold flat.
Source: Deadline
