All Available Season All Season Specials Oct, 2007 14 episodes 0.0 Series 1 Oct, 2006 6 episodes 6.9 Series 2 Sep, 2007 8 episodes 7.3 Series 3 Jan, 2009 8 episodes 6.9 Series 4 Jan, 2011 6 episodes 6.8 Series 5 Apr, 2012 6 episodes 5.2 Series 6 Apr, 2013 8 episodes 6.8 Series 7 Oct, 2014 11 episodes 7.3 Series 8 Jan, 2017 7 episodes 7.3 Series 9 Mar, 2018 7 episodes 7.0 Series 10 Apr, 2019 7 episodes 7.1 Series 11 Jan, 2021 5 episodes 7.5 Series 12 Mar, 2022 6 episodes 7.0 Season 13 Jun, 2023 7 episodes 7.5
