All Star Wrestling
In 1982, St. Clair moved from Joint Promotions to All Star Wrestling with the British Heavyweight Championship. During that reign, he would win two World Heavyweight Championships between 1982 and 1984, before finally losing the British Heavyweight Championship to Kendo Nagasaki after reigning as champion for nearly a decade. St. Clair regained the title from Nagasaki later that year. In 1989, there were plans to unify All Star Wrestling and Joint Promotions' British Heavyweight titles, pitting St. Clair against Dalbir Singh after the latter joined All Star Wrestling, but Singh renounced his claim to the title, making St. Clair the undisputed British Heavyweight Champion. He reigned as champion until February 1990, when he lost the title to Fit Finlay. During April and May 1991, St. Clair wrestled on the World Wrestling Federation's tour in England. In May 1993, he won the British Heavyweight Championship for the fourth and final time, but vacated the title in 1995. He remained in All Star until 2000.