Depending on which version or regional numbering you are following, you might be looking for one of the following: Season 8 (Series 8, 2017)
The Great British Bake Off typically runs for 10 main episodes per season. There is no "Episode 15" in Season 8 of the original UK broadcast or its primary spin-offs. The Great British Bake Off - Season 08Eps15
If "08" was a typo for the most recent season (Series 15), this season is currently in progress or recently concluded, but still typically adheres to a 10-episode main run. Series 1 (The First Season) Depending on which version or regional numbering you