The Great British Bake Off: An Extra Slice Guest cast, played by Joe Wilkinson Episode 4x08: Episode 8 (Oct 19, 2017) Episode 5x10: Episode 10 (Nov 2, 2018) Episode 6x09: Episode 9 (Oct 25, 2019) Episode 7x09: Episode 9 (Nov 20, 2020) Episode 9x08: Episode 8 (Nov 4, 2022) Episode 10x09: Episode 9 (Nov 23, 2023)