 Aluko left Birmingham to join Charlton Athletic in January 2004.She helped Charlton defeat Fulham 1–0 to win the FA Women's Premier League Cup at Underhill Stadium in March 2004.During the 2003–04 season, Aluko appeared as a second-half substitute when Charlton lost the FA Women's Cup final to Arsenal, 3–0 at Loftus Road in May.