The 2014–15 season was the 100th season of the Isthmian League, which is an English football competition featuring semi-professional and amateur clubs from London, East and South East England. Following the resignation of Vauxhall Motors from the Conference North, and the liquidation of Southern League Premier Division club Hinckley United, Redhill and Wroxham were reprieved from relegation in Division One South and Division One North respectively.