The Great British Bake Off Series 15: Recap, Bakes and Winner

Spoiler note: this recap names the winner of Great British Bake Off series 15.

Series 15 of The Great British Bake Off aired from September 24 to November 26, 2024, twelve bakers into a ten-episode run that ended with the show's first-ever Welsh winner. The full show record lives on our Great British Bake Off hub.

How the format worked in series 15

Series 15 followed the show's long-standing three-bake week: a Signature bake to show personal style against a loose brief, a Technical challenge where every contestant bakes an identical, deliberately vague recipe and is ranked blind, and a Showstopper that closes the episode as the most ambitious bake of the week. Fifteen years and multiple hosting and judging changes in, the underlying weekly test had barely moved from what aired in series 1.

The final and the winner

Georgie Grasso, a 34-year-old paediatric nurse from Carmarthen, Wales, won series 15, beating Christiaan de Vries and Dylan Bachelet in the final.

Grasso lives on a farm in Wales with her husband and three children and works as a paediatric nurse, a job she has said she has no plans to leave despite the win. She was diagnosed with ADHD before the series aired and has since used her platform, including a following of well over 150,000 on Instagram, to speak openly about ADHD and mental health alongside sharing her bakes. Her win made her the first Welsh champion in the show's history.

The full series 15 lineup

Hometowns and the shape of the cast

Only one baker, Christiaan de Vries, was based in London this series, with the rest of the field pulling from Lancashire, Wales, and the West Midlands. Georgie Grasso's win also made Carmarthen the first Welsh hometown to produce a champion in the show's history, and her work as a paediatric nurse alongside raising three children on a family farm gave her one of the busier real-life schedules of any winner featured in this run of recaps.

Judges, hosts, and a few standout details

Paul Hollywood and Prue Leith judged, with Noel Fielding and Alison Hammond hosting for their second series together. This is one of the older-skewing casts in the show's history, with Hazel Vaughan, at 71, the oldest baker ever to appear in the series list covered here, while Sumayah Kazi, at 18, was the youngest. The wide generational spread, from 18 to 71, made the cast one of the show's most varied in recent years.

An unusually wide age range

The 53-year gap between the series' youngest and oldest bakers, 18-year-old Sumayah Kazi and 71-year-old Hazel Vaughan, is one of the widest of any series covered in this recap run, and it is a useful reminder of how deliberately the show casts across generations rather than skewing toward any single age bracket the way some competition formats do.

The final series before a judging change

Series 15 turned out to be the last full series before Prue Leith's departure was announced, making it, in hindsight, the closing chapter of the judging pairing that had anchored the show since 2017. Viewers rewatching it now are effectively watching the final stretch of the Hollywood-Leith era before Nigella Lawson's arrival on the panel.

If you're working through the archive

Series 15 follows series 14 and leads into series 16, the most recent series covered in this run. The full explainer on hosts, judges, and format across every era is in our Bake Off fan guide, and every champion since 2010 is listed in every Great British Bake Off winner. A dependable cooling rack is a small piece of kit that saves a lot of bakes from a soggy bottom before they even reach the judges.