Season 1 BBC One Season 17 BBC One , 2013 - 2014 Season 18 BBC One , 2014 - 2015 Season 19 BBC One , 2015 - 2016 Season 20 BBC One , 2016 - 2017 Season 21 BBC One , 2017 - 2018 Season 22 BBC One , 2018 - 2019 Season 24 BBC One , 2020 - 2022 Season 25 BBC One , 2022 - 2023 Season 26 BBC One , 2023
