Season 1 BBC One Season 16 BBC One , 2016 Season 18 BBC One Wales , 2018 - 2019 Season 19 BBC One Wales , 2019 Season 20 BBC One Wales , 2020 - 2021 Season 21 BBC One Wales , 2021 - 2022 Season 22 BBC One Wales , 2022 Season 23 BBC One Wales , 2022 - 2023