Roisin Conaty is joining Last One Laughing season 3 as a contestant, while Mel Giedroyc takes over Jimmy Carr's deputy role in the control room. Prime Video has set the third season for 2027, turning the cast reveal into the clearest sign yet of how the show is resetting for its next run.
The line-up also includes Lee Mack, Katherine Ryan, Harry Hill, Katherine Parkinson, Michelle de Swarte, Jon Richardson, Morgana Robinson, Josh Jones and Richard Ayoade. Richard Ayoade is listed as the season one runner-up, which gives the new cast a built-in reference point: this is not just another roster, but a mix of repeat faces, returning competitors and a production setup that already knows how the game plays out.
Roisin Conaty and Mel Giedroyc
Roisin Conaty moving into the contestant lineup is the sharpest switch in the announcement. Her name sits alongside the people competing for the laughs, not the people overseeing the action, and that puts her in the same role as the other comics rather than in the control-room frame the show has used before.
Mel Giedroyc taking over as Jimmy Carr's deputy in the control room keeps the authority structure intact while changing who sits inside it. That split matters because the show is built on two visible layers: the contestants trying not to laugh, and the control room managing the punishment side of the format.
Lee Mack and Richard Ayoade
Lee Mack, Katherine Ryan, Harry Hill, Katherine Parkinson, Michelle de Swarte, Jon Richardson, Morgana Robinson, Josh Jones and Richard Ayoade give the season a broad comic spread before a single episode has aired. Richard Ayoade's season one runner-up tag adds a small competitive hook to the line-up, since the cast is not being assembled as a clean reset.
Bob Mortimer won season one and David Mitchell won season two, so the new series arrives with an established benchmark. That history makes the 2027 return feel less like a soft relaunch and more like the next attempt to see which performer can survive the format's pressure when the cameras go back up.
2027 after March
The third season was set in motion in March, shortly after the second season debuted on Prime Video. The gap between that announcement and the 2027 air date gives the production room for the show's usual extras — comedy cameos, format twists and surprises — without crowding the cast reveal with specifics it has not yet given.
Last One Laughing Halloween also keeps the franchise active before the full season lands, with its first three episodes on 23 October and its fourth and final episode on 30 October. For viewers, the immediate takeaway is simple: the roster is now public, the control room has changed hands, and the next full season is a 2027 job rather than a near-term drop.
