The club was reformed following World War II at a meeting held at St. Helens Cricket Pavilion, Swansea on Monday 10 May 1948 and the initial 1st XV fixture was played at Mumbles on 23 September with the “A” XV playing the same opponents two days later. After resuming playing at Derwen Fawr, the club sought its own ground and in 1952 purchased the field at Upper Killay. On 24 April 1956, the club played and defeated an International XV selected by Clem Thomas at St. Helens and raised the then considerable sum of £400 for charity. The clubhouse was built by the members and following a special match on 23 April 1958 to mark the occasion, the clubhouse was formally opened by Mr. Enoch H. Rees, President of the Welsh Rugby Union.