Marlow won the Hellenic League Premier Division at the first attempt, earning promotion back to Division One Central of the Southern League. They were subsequently transferred to Division One South & West for the 2015–16 season, before returning to Division One Central the following year. In 2016–17 the club finished fourth in Division One Central, qualifying for the promotion play-offs, going on to lose 2–0 to Barton Rovers in the semi-finals. At the end of the 2017–18 season the club were transferred to the South Central Division of the Isthmian League.