By 1936, the brewery was producing 500 barrels per week, which continued to increase to 900 in 1938. This growth was halted by the outbreak of war in 1939, but when the war ended in 1945 the growth took off again. By 1954, the old brewery had been replaced by a completely new building that was big enough to produce the 1200 barrels per week that the clubs demanded at that time. In 1984, Bob Smith was head brewer for the company and was only the fifth in the 65 years the company had been trading. In 1988, Crown merged with Wales's oldest brewery, Buckley's of Llanelly, to form the Crown Buckley Brewery, but after 80 years of trading, the brewery closed in the Spring of 1999.