The 1984-85 South Midlands League season was 56th in the history of South Midlands League. Premier Division The Premier Division featured 11 clubs which competed in the division last season, along with 5 new clubs: *New Bradwell St. Peter, promoted from last season's Division One *Brache Sparta, promoted from last season's Division One *Knebworth, promoted from last season's Division One *Leighton Town, promoted from last season's Division One *Hoddesdon Town, joined from the defunct Athenian League League table Division One The Division One featured 10 clubs which competed in the division last season, along with 4 new clubs: *Walden Rangers, relegated from Premier Division *Milton Keynes Borough, transferred from the Hellenic League Division One *Milton Keynes United, joined from North Bucks League *Ickleford, joined from North Herts League League table