 <unk> by Mike <unk> , Wales won their first Grand Slam since 1978 and their first ever Six Nations Grand Slam in 2005 . A late long range penalty from Gavin Henson gave them a victory over England at Cardiff for the first time in 12 years , and after victories over Italy , France , Scotland , they faced Ireland in front of a capacity crowd at the Millennium Stadium where Wales ' 32 – 20 victory gave them their first Championship since 1994 . Later that year they suffered a record home loss , 41 – 3 to New Zealand . 
