The Spring Series ran from February to May 2017 to bridge the gap from the 2016 FA WSL season which ran from March to September as a summer tournament, and the 2017–18 season which started in September 2017.[1][2] While the 2017–18 season planned to feature 21 clubs,[2] the Spring Series contained 20.folded two days before they were due to play their first Spring Series game, leaving 19 teams in total.[2] Notts County Ladies announced it was folding and withdrew from the league two days before their first scheduled fixture.[6][7] Following the closure of Notts County Ladies in April 2017, one team was promoted at the end of the Spring Series to the WSL1 for the 2017–18 season, based on an evaluation by the FA of applicant clubs' business plans, budget, youth development, facilities and on-pitch performance.