After the war Baldock rejoined the Herts County League, finishing bottom of Division One in 1946–47. They then switched back to the South Midlands League, winning Division Two in 1947–48 and earning promotion to Division One; the reserves subsequently joined Division Two. The club won Division One in 1949–50 and were promoted to the Premier Division. After finishing as runners-up in 1953–54, they left the league, switching to the Parthenon League. They remained in the league for five seasons, before joining the Senior Division of the London League, finishing bottom of the division in 1959–60. However, after four seasons they rejoined the Premier Division of the South Midlands League. They subsequently won the league in 1965–66, 1967–68 and 1969–70.