Farnborough were relegated at the end of their first season in the Conference and were placed in the Premier Division of the Southern League. They won the division at the first attempt to earn promotion back to the Conference. After reaching the first round of the FA Cup in all but one of the seasons between 1983–84 and 1990–91, the club progressed beyond the first round for the first time in 1991–92; after a first round replay win over Halesowen Town, they defeated Third Division Torquay United 4–3 in a second round replay. They were drawn at home to top division West Ham. With the game switched to the Boleyn Ground, they held West Ham to a 1–1 draw before losing the replay 1–0. The season also saw them finish fifth in the Conference, but they were relegated back to the Southern League at the end of the following season.