The newly formed club were admitted to the Essex Senior League for the 2001–02 season, three divisions below the Isthmian League Premier Division where Enfield continued to play. The club's first season saw them finish second in the league and win the League Cup, the Capital Counties Feeder Leagues Trophy, and the Middlesex Senior Charity Cup. The following season they won the Essex Senior League, but were not promoted due to ground grading issues. Despite only finishing fourth in the 2003–04 season, in May 2004 the Isthmian League invited the club to join Division Two, but later rescinded the offer. They won the Essex Senior League for a second time in 2004–05, and were promoted to Division One East of the Southern League, which Enfield were also members of. They finished third in their first season in the Southern League, qualifying for the play-offs, where they were beaten 3–1 after extra time in the semi-finals by Wivenhoe Town.