Happy Valley Guest cast, played by Oliver Huntingdon Episode 3x01: Episode 1 (Jan 1, 2023) Episode 3x02: Episode 2 (Jan 8, 2023) Episode 3x03: Episode 3 (Jan 15, 2023) Episode 3x04: Episode 4 (Jan 22, 2023) Episode 3x05: Episode 5 (Jan 29, 2023) Episode 3x06: Episode 6 (Feb 5, 2023)