High Quality Content by WIKIPEDIA articles! The 2003 Six Nations Championship was the fourth series of the Six Nations Championship. Including the previous incarnations as the Home Nations and Five Nations, this was the hundred-and-ninth series of the northern hemisphere rugby union championship. The annual tournament was won by England, who completed a tournament grand slam, and went on to win the 2003 Rugby World Cup later the same year. Italy won their first match with Wales (30-22), finishing in 5th place for the second time.