Season 1 Channel 5 , 2003 Season 2 Channel 5 , 2004 Season 3 Channel 5 , 2005 Season 4 Channel 5 , 2005 - 2006 Season 5 Channel 5 , 2006 - 2007 Season 6 Channel 5 , 2007 - 2008 Season 7 Channel 5 , 2008 Season 8 Channel 5 , 2008 - 2009 Season 9 Channel 5 , 2010 Season 10 Channel 5 , 2011 Season 11 Channel 5 , 2012 - 2013 Season 12 Channel 5 , 2016 Season 13 Channel 5 , 2017 Season 14 Channel 5 , 2018 Season 15 Channel 5 , 2019