 For five successive seasons between 1923–24 to 1927–28 Northfleet United won the Kent Senior Cup.Northfleet United joined the Southern League in 1927–28, joining the Easern Section, but left in 1930. and rejoined the Kent League

In 1931, the arrangement with Tottenham Hotspur was upgraded to full nursery team status, and this heralded a period of seven seasons of success during which period they scored a minimum of 110 goals in league competition each season.Northfleet were Kent League Division 1 Championship and Kent League Cup double winners in 1931–32, 1934–35, and 1936–37.