1986–87 Isthmian League
The 1986–87 season was the 72nd season of the Isthmian League, which is an English football competition featuring semi-professional and amateur clubs from London, East and South East England. League consisted of three divisions. The Second Division was divided into two sections.
Wycombe Wanderers won the league and returned to the Conference at the first attempt.The Premier Division consisted of 22 clubs, including 19 clubs from the previous season and three new clubs:
Division One
Division One consisted of 22 clubs, including 16 clubs from the previous season and six new clubs:
Two clubs relegated from the Premier Division:
Four clubs promoted from Division Two North:
Four clubs promoted from Division Two South:
Division Two North
Division Two North consisted of 22 clubs, including 16 clubs from the previous season and six new clubs:
Division Two South
Division Two South consisted of 21 clubs, including 18 clubs from the previous season and three new clubs:
