The club was unable to replicate its form in the 1947–48 season, occupying 11th place on its conclusion in May 1948. Despite that, Liddell reached double figures with a total of 11 goals. He accompanied the club when it embarked on its second exhibition tour of North America. His displays against Sweden's Djurgården, played at the Brooklyn Dodgers' Ebbets Field, and North American teams earned him praise from journalists and gained him 13 goals in 11 matches. In the 1948–49 season, Liddell occupied left back and four forward positions. During his career, he would fill all ten outfield roles, mostly because of injuries to other players. His brother, Tom, became a teammate in 1949 after Liverpool signed him from Lochore Welfare. He never represented the club as a senior. The club finished in eighth in the 1949–50 season, going undefeated for a post-First World War record of 19 consecutive matches. Liddell scored ten goals in seven of those matches, including three braces.