The Great British Bake Off: An Extra Slice Guest cast, played by Joel Dommett Episode 4x09: Episode 9 (Oct 26, 2017) Episode 5x05: Episode 5 (Sep 28, 2018) Episode 6x02: Episode 2 (Sep 6, 2019) Episode 7x05: Episode 5 (Oct 23, 2020) Episode 9x09: Episode 9 (Nov 11, 2022) Episode 10x07: Episode 7 (Nov 9, 2023)