Henson was recalled to the Welsh Squad by caretaker coach Nigel Davies, to play against South Africa shortly after the 2007 Rugby World Cup. He then started for of all of Wales 2008 Six Nations Championship games, Wales then went on to win the Grand Slam for the second time in four seasons. Henson lost his first 6 Nations match in which he started on 21 March 2009 as Ireland beat Wales in Cardiff 17–15, to win the Grand Slam.