The Great British Bake Off: An Extra Slice Guest cast, played by Matt Lucas Episode 7x01: Episode 1 (Sep 25, 2020) Episode 7x03: Episode 3 (Oct 9, 2020) Episode 7x04: Episode 4 (Oct 16, 2020) Episode 7x05: Episode 5 (Oct 23, 2020) Episode 7x06: Episode 6 (Oct 30, 2020) Episode 7x08: Episode 8 (Nov 12, 2020) Episode 7x09: Episode 9 (Nov 20, 2020)