Season 1 ITV1 , 2008 Season 2 ITV1 , 2009 Season 3 ITV1 , 2010 Season 4 ITV1 , 2012 Season 5 ITV1 , 2013 Season 6 ITV1 , 2014 Season 7 ITV1 , 2015 Season 8 ITV1 , 2016