Isthmian League
Şampiyonlar

| Sezon | Isthmian League |
| --- | --- |
1905-06: London Caledonians
1906-07: Ilford
1907-08: London Caledonians
1908-09: Bromley
1909-10: Bromley
1910-11: Clapton
1911-12: London Caledonians
1912-13: London Caledonians
1913-14: London Caledonians
1914-19: I. Dünya Savaşı sebebiyle düzenlenmedi
1919: Leytonstone
1919-20: Dulwich Hamlet
1920-21: Ilford
1921-22: Ilford
1922-23: Clapton
1923-24: St Albans City
1924-25: London Caledonians
1925-26: Dulwich Hamlet
1926-27: St Albans City
1927-28: St Albans City
1928-29: Nunhead
1929-30: Nunhead
1930-31: Wimbledon
1931-32: Wimbledon
1932-33: Dulwich Hamlet
1933-34: Kingstonian
1934-35: Wimbledon
1935-36: Wimbledon
1936-37: Kingstonian
1937-38: Leytonstone
1938-39: Leytonstone
1939-45: II. Dünya Savaşı sebebiyle düzenlenmedi
1945-46: Walthamstow Avenue
1946-47: Leytonstone
1947-48: Leytonstone
1948-49: Dulwich Hamlet
1949-50: Leytonstone
1950-51: Leytonstone
1951-52: Leytonstone
1952-53: Walthamstow Avenue
1953-54: Bromley
1954-55: Walthamstow Avenue
1955-56: Wycombe Wanderers
1956-57: Wycombe Wanderers
1957-58: Tooting & Mitcham United
1958-59: Wimbledon
1959-60: Tooting & Mitcham United
1960-61: Bromley
1961-62: Wimbledon
1962-63: Wimbledon
1963-64: Wimbledon
1964-65: Hendon
1965-66: Leytonstone
1966-67: Sutton United
1967-68: Enfield
1968-69: Enfield
1969-70: Enfield
1970-71: Wycombe Wanderers
1971-72: Wycombe Wanderers
1972-73: Hendon
1973-74 sezonunda Division Two eklendi.
| Sezon | Division One | Division Two |
| --- | --- | --- |
| 1973-74 | Wycombe Wanderers | Dagenham |
| 1974-75 | Wycombe Wanderers | Staines Town |
| 1975-76 | Enfield | Tilbury |
| 1976-77 | Enfield | Boreham Wood |
1977-78 sezonunda Division One, Premier Division olarak yeniden adlandırıldı; Division Two, Division One olarak yeniden adlandırıldı ve yeni bir Division Two eklendi.
| Sezon | Premier Division | Division One | Division Two |
| --- | --- | --- | --- |
| 1977-78 | Enfield | Dulwich Hamlet | Epsom & Ewell |
| 1978-79 | Barking | Harrow Borough | Farnborough Town |
| 1979-80 | Enfield | Leytonstone/Ilford | Billericay Town |
| 1980-81 | Slough Town | Bishop's Stortford | Feltham |
| 1981-82 | Leytonstone & Ilford | Wokingham Town | Worthing |
| 1982-83 | Wycombe Wanderers | Worthing | Clapton |
| 1983-84 | Harrow Borough | Windsor & Eton | Basildon United |
1984-85 sezonunda Division Two, Kuzey ve Güney bölgelerine özel olarak yeniden düzenlendi.
| Sezon | Premier Division | Division One | Division Two North | Division Two South |
| --- | --- | --- | --- | --- |
| 1984-85 | Sutton United | Farnborough Town | Leyton Wingate | Grays Athletic |
| 1985-86 | Sutton United | St Albans City | Stevenage Borough | Southwick |
| 1986-87 | Wycombe Wanderers | Leytonstone/Ilford | Chesham United | Woking |
| 1987-88 | Yeovil Town | Marlow | Wivenhoe Town | Chalfont St Peter |
| 1988-89 | Leytonstone/Ilford | Staines Town | Harlow Town | Dorking |
| 1989-90 | Slough Town | Wivenhoe Town | Heybridge Swifts | Yeading |
| 1990-91 | Redbridge Forest | Chesham United | Stevenage Borough | Abingdon Town |
1991-92 sezonunda, Two bölgesel ligleri birleştirildi ve Division Three eklendi.
| Sezon | Premier Division | Division One | Division Two | Division Three |
| --- | --- | --- | --- | --- |
| 1991-92 | Woking | Stevenage Borough | Purfleet | Edgware Town |
| 1992-93 | Chesham United | Hitchin Town | Worthing | Aldershot Town |
| 1993-94 | Stevenage Borough | Bishop's Stortford | Newbury Town | Bracknell Town |
| 1994-95 | Enfield | Boreham Wood | Thame United | Collier Row |
| 1995-96 | Hayes | Oxford City | Canvey Island | Horsham |
| 1996-97 | Yeovil Town | Chesham United | Collier Row & Romford | Wealdstone |
| 1997-98 | Kingstonian | Aldershot Town | Canvey Island | Hemel Hempstead Town |
| 1998-99 | Sutton United | Canvey Island | Bedford Town | Ford United |
| 1999-2000 | Dagenham & Redbridge | Croydon | Hemel Hempstead Town | East Thurrock United |
| 2000-01 | Farnborough Town | Boreham Wood | Tooting & Mitcham United | Arlesey Town |
| 2001-02 | Gravesend & Northfleet | Ford United | Lewes | Croydon Athletic |
1994-95 sezonunun sonunda Enfield'ın Conference ligine yükselmesi reddedildi. Onların yerini ikinci olarak bitiren Slough Town aldı.
2002-03 sezonunda, Division One, Kuzey ve Güney bölgelerine özel olarak yeniden düzenlendi ve Division Three dağıtıldı.
| Sezon | Premier Division | Division One North | Division One South | Division Two |
| --- | --- | --- | --- | --- |
| 2002-03 | Aldershot Town | Northwood | Carshalton Athletic | Cheshunt |
| 2003-04 | Canvey Island | Yeading | Lewes | Leighton Town |
2004-05 sezonunda Division One'da North ve South ligleri birleştirildi.
| Sezon | Premier Division | Division One | Division Two |
| --- | --- | --- | --- |
| 2004-05 | Yeading | AFC Wimbledon | Ilford |
| 2005-06 | Braintree Town | Ramsgate | Ware |
2006-07 sezonunda, Division One, North ve South olarak yeniden düzenlendi ve Division Two dağıtıldı.
| Sezon | Premier Division | North Division | South Division |
| --- | --- | --- | --- |
| 2006-07 | Hampton & Richmond Borough | AFC Hornchurch | Maidstone United |
| 2007-08 | Chelmsford City | Dartford | Dover Athletic |
| 2008-09 | Dover Athletic | Aveley | Kingstonian |
| 2009-10 | Dartford | Lowestoft Town | Croydon Athletic |
| 2010-11 | Sutton United | East Thurrock United | Metropolitan Police |
| 2011-12 | Billericay Town | Leiston | Whitehawk |
| 2012-13 | Whitehawk | Grays Athletic | Dulwich Hamlet |
| 2013-14 | Wealdstone | VCD Athletic | Peacehaven & Telscombe |
| 2014-15 | Maidstone United | Needham Market | Burgess Hill Town |
| 2015-16 | Hampton & Richmond Borough | AFC Sudbury | Folkestone Invicta |
| 2016-17 | Havant & Waterlooville | Brightlingsea Regent | Tooting & Mitcham United |
| 2017-18 | Billericay Town | AFC Hornchurch | Carshalton Athletic |
2018-19 sezonunda South Division, South Central ve South East bölümleri olarak yeniden düzenlendi.
| Sezon | Premier Division | North Division | South Central Division | South East Division |
| --- | --- | --- | --- | --- |
| 2018-19 | Dorking Wanderers | Bowers & Pitsea | Hayes & Yeading United | Cray Wanderers |
| 2019-201 | Worthing | Maldon & Tiptree | Ware | Hastings United |
| 2020-212 | Worthing | Tilbury | Waltham Abbey | Hastings United |
| 2021-22 | Worthing | Aveley | Bracknell Town | Hastings United |
| 2022-23 | Bishop's Stortford | Hashtag United | Basingstoke Town | Chatham Kasabası |
| 2023-24 | Hornchurch | Lowestoft Town | Chertsey Town | Cray Valley Paper Mills |
1 2019-20 sezonu, COVID-19 pandemisi nedeniyle 26 Mart 2020 tarihinde sonlandırıldı; burada listelenen takımlar, sonlandırılma sırasında sıralamada ilk sırada yer alıyordu ancak şampiyon olarak tanınmadılar.
2 2020-21 sezonu da COVID-19 pandemisi nedeniyle 24 Şubat 2021'de sonlandırıldı; burada listelenen takımlar, sonlandırılma sırasında sıralamada ilk sırada yer alıyordu ancak şampiyon olarak tanınmadılar.