In 1970, the club took the decision to play league rugby and was accepted into the West Wales Rugby Union. The first competitive match was in the West Wales Cup with a 3–0 victory at Penygroes on 13 February 1971 and the first league match was played the following season on 18 September 1971 at Burry Port. The commitment to the league however spelt the end of the club’s traditional fixture list, which had covered an area from Newport to Aberystwyth. That year, the club established its first junior teams, becoming a founder member of the Swansea and District Boys Rugby Union.