Season 1 BBC One , 2009 Watch now Season 2 BBC One , 2010 Watch now Season 3 BBC One , 2011 Watch now Season 4 BBC One , 2012 Watch now Season 5 BBC One , 2013 - 2014 Watch now Season 6 BBC One , 2015 - 2016 Watch now Season 7 CBBC , 2017 - 2018 Watch now Season 8 CBBC , 2019 - 2020 Watch now Season 9 CBBC , 2021 - 2022 Watch now Season 10 CBBC , 2023 - 2024 Watch now