The Isthmian League is a regional football league for London and South East England. The league is also known by its sponsor name Ryman League. The league was sponsored among others by the company Vauxhall.
The league was founded in 1905 as a strict amateur league. The league presented the most winners of the FA Amateur Cup and was considered better than their English counterparts such as the Northern Premier League. In the 1970s, for the first time professionals were admitted. 1981 managed for the first time teams from the Isthmian League in the relegation to the Conference League, the fourth- highest division in England. The most successful club in the Isthmian League in the FA Cup was the FC Canvey Iceland, which is qualified and there reached the third round of the FA Cup by a triumph in the FA Trophy.
Initially there was only one league with six teams. In 1922 it counted already 14 members. Over the next five decades, the league grew. She was raised in a first and second division and 1977 came even added a third league. 1984 closed to outside leagues in the Isthmian League and it was divided into three leagues, the third league was split into a North and South league. Since 2006 there has again three leagues, to be attended by 22 teams each: the Premier Division ( seventh-highest division), the Division One North Division One South and the ( eight top division ).
Premier Division 1905-2010
- 9 Title: FC Leytonstone
- 8 Title: Wycombe Wanderers FC Enfield
- 6 Title: London Caledonians, FC Wimbledon
- 5 Title: Sutton United
- 4 Title: FC Bromley, Dulwich Hamlet
- 3 Title: St. Albans City, Walthamstow Avenue, Redbridge Forest FC Ilford
- 2 Title: FC Clapton, Nunhead FC, FC Kingstonian, Tooting & Mitcham United, FC Hendon, Yeovil Town
- 1 Title: FC Barking, Slough Town, Harrow Borough FC Woking, Chesham United, Stevenage Borough FC Hayes, Dagenham & Redbridge, Farnborough Town, Ebbsfleet United, Aldershot Town FC Canvey Iceland, FC Yeading, Braintree Town, Hampton & Richmond Borough, Chelmsford City, Dover Athletic, Dartford FC