at all and re-entered themselves into Division Six. Pontypool launched a legal challenge to avoid being the only team relegated but lost the case. Past Premier Division winners Premier Division champions by season *= Welsh-Scottish League winners Premier Division wins by club Cardiff RFC were leading the 2019-20 table before the season was cancelled due to the COVID-19 pandemic, but the championship was withheld. See also WRU Challenge Cup United Rugby Championship British and Irish Cup List of Welsh rugby union teams WRU National Leagues References 2 1990 establishments in Wales Sports leagues established in 1990 Rugby union leagues in Europe Wales Professional sports leagues in the United Kingdom