The 2008–09 season was the 94th season of the Isthmian League, which is an English football competition featuring semi-professional and amateur clubs from London, East and South East England. Premier Division The Premier Division consisted of 22 clubs, including 17 clubs from the previous season, and five new clubs: Canvey Island, promoted as play-off winners in Division One North Dartford, promoted as champions of Division One North Dover Athletic, promoted as champions of Division One South Sutton United, relegated from the Conference South Tooting & Mitcham United, promoted as play-off winners in Division One South Dover Athletic became champions five games before the end of the season and were promoted to the Conference South along with play-off winners Staines Town. Harlow Town, Heybridge Swifts and Ramsgate were relegated to the Division One sections, while Margate, who also finished in the relegation zone, were reprieved due to the demotion of clubs higher up the pyramid. League table Top scorers Play-offs Stadia and locations 1.Hendon left Claremont Road at September and spent the rest of campaign groundsharing with Northwood and Staines Town. Division One North Division One North consisted of 22 clubs, including 15 clubs from the previous season, and seven new clubs: Chatham Town, transferred from Division One South Cheshunt, relegated from the Southern Football League Premier Division Concord Rangers, promoted as champions of the Essex Senior League East Thurrock United, relegated from the Premier Division Hillingdon Borough, transferred from Southern Football League Division One South & West Leyton, relegated from the Premier Division Thamesmead Town, promoted as champions of the Kent League Aveley won the division and were promoted to the Premier Division along with play-off winners Waltham Abbey. Witham Town and Hillingdon Borough finished in the bottom two places and left the league. League table Top scorers Play-offs Stadia and locations Division One South Division One South consisted of 22 clubs, including 17 clubs from the previous season, and five new clubs: Crowborough Athletic, promoted as champions of the Sussex County League Fleet Town, transferred from Southern Football League Division One South & West Folkestone Invicta, relegated from the Premier Division Godalming Town, transferred from Southern Football League Division One South & West Merstham, promoted as champions of the Combined Counties League Kingstonian won the division and were promoted to the Premier Division along with play-off winners Cray Wanderers. Crowborough Athletic finished bottom of the table and returned to