They resigned from the Northern League on 20 March 1940, but rejoined at the end of World War II. In 1945–46 they reached the first round of the FA Cup for the first time, but lost to Bishop Auckland. In 1949–50 they reached the final of the Amateur Cup for a second time, this time defeating Bishop Auckland 4–0 at Wembley Stadium before a crowd of 88,000. The following season they entered the FA Cup in the first round, but lost 3–0 to Rochdale. During this period the club finished in the top nine in every season until 1960, but thereafter saw a gradual decline, although they reached the first round of the FA Cup again in 1973–74, losing 6–1 to Blackburn Rovers in a replay.
