World War II disrupted his career as little golf was played during this era in Britain. In the mid-1940s, after the war, his career resumed and he had some success. He won the 1946 British Masters (in a tie with Bobby Locke), the Silver King tournament in 1948 (tied with Charlie Ward), the Dutch Open and Belgian Open in 1949. In the early 1950s he continued with success finishing 4th at the 1951 Open Championship, winning the 1951 Italian Open, and the 1952 Lakes Open, an event in Australian.[3] In 1954, Adams was the only player to break 70 in both the final two rounds of the 1954 Open Championship at Royal Birkdale with a pair of 69s and finished fifth, three shots behind champion Peter Thomson.
Adams was selected for the 1939 Ryder Cup team, although the matches did not take place, then again in 1947, 1949, 1951 and 1953.[3] He won both his matches in 1949. In 1951, the British team all played in the North and South Open in America in preparation for the Ryder Cup matches, and Adams finished fourth in a field that contained the entire U.S. Ryder Cup team.