Waterloo Road Guest cast, played by Osian Morgan Episode 12x01: Episode 1 (May 16, 2023) Episode 12x03: Episode 3 (May 16, 2023) Episode 12x04: Episode 4 (May 16, 2023) Episode 12x05: Episode 5 (May 16, 2023) Episode 12x06: Episode 6 (May 16, 2023) Episode 12x07: Episode 7 (May 16, 2023)