Season 1 Channel 4 , 2001 Season 2 Channel 4 , 2002 - 2003 Season 3 Channel 4 , 2003 Season 4 Channel 4 , 2004 - 2005 Season 5 Channel 4 , 2005 - 2006 Season 6 Channel 4 , 2006 Season 7 Channel 4 , 2007 - 2008