League Record
| Season | Position Finished | Played | Won | Drawn | Lost | For | Against | Points | League & Division |
| 1896/97 | 5th | 24 | 10 | 6 | 8 | 37 | 54 | 26 | Southern Football League Division 2 |
| 1897/98 | 10th | 22 | 7 | 2 | 13 | 37 | 55 | 16 | Southern Football League Division 2 |
| 1898/99 | 5th | 22 | 10 | 2 | 10 | 55 | 57 | 22 | Southern Football League Division 2 (London) |
| 1899/00 | 8th | 20 | 8 | 3 | 9 | 35 | 50 | 19 | Southern Football League Division 2 |
| 1900/01 | 8th | 16 | 4 | 1 | 11 | 23 | 68 | 9 | Southern Football League Division 2 |
| 1901/02 | 4th | 16 | 7 | 3 | 6 | 36 | 30 | 17 | Southern Football League Division 2 |
| 1902/03 | 4th | 10 | 3 | 3 | 4 | 13 | 19 | 9 | Southern Football League Division 2 |
| 1903/04 | 9th | 20 | 5 | 5 | 10 | 29 | 64 | 15 | Southern Football League Division 2 |
| 1904/05 | 11th | 22 | 6 | 2 | 14 | 37 | 70 | 14 | Southern Football League Division 2 |
| 1905/06 | 13th | 24 | 5 | 3 | 16 | 36 | 83 | 13 | Southern Football League Division 2 |
| 1906/07 | 12th | 22 | 4 | 6 | 12 | 28 | 68 | 14 | Southern Football League Division 2 |
| 1907/08 | ▼10th | 18 | 1 | 1 | 16 | 16 | 72 | 3 | Southern Football League Division 2 |
| 1908/09 | 3rd | 24 | 14 | 6 | 4 | 46 | 30 | 34 | Great Western Suburban League |
| 1909/10 | 3rd | 22 | 14 | 1 | 7 | 65 | 33 | 29 | Great Western Suburban League |
| 1910/11 | 5th | 24 | 11 | 3 | 10 | 62 | 43 | 25 | Great Western Suburban League |
| 1911/12 | 3rd | 20 | 11 | 3 | 6 | 56 | 39 | 25 | Great Western Suburban League |
| 1912/13 | 7th | 20 | 7 | 2 | 11 | 44 | 43 | 16 | Great Western Suburban League |
| 1913/14 | 4th | 18 | 9 | 3 | 6 | 49 | 34 | 21 | Great Western Suburban League |
| 1914/15 | League suspended due to outbreak of World War 1 | Spartan League | |||||||
| World War 1 Suspended Play | |||||||||
| 1919/20 | 1st | 20 | 18 | 1 | 1 | 114 | 24 | 37 | Spartan League |
| 1920/21 | 1st | 22 | 19 | 2 | 1 | 108 | 29 | 40 | Spartan League |
| 1921/22 | 8th | 26 | 12 | 2 | 12 | 61 | 64 | 26 | Isthmian League |
| 1922/23 | 7th | 26 | 11 | 4 | 11 | 61 | 61 | 26 | Isthmian League |
| 1923/24 | 4th | 26 | 14 | 5 | 7 | 88 | 65 | 33 | Isthmian League |
| 1924/25 | 8th | 26 | 11 | 2 | 13 | 58 | 61 | 24 | Isthmian League |
| 1925/26 | 4th | 26 | 14 | 3 | 9 | 97 | 83 | 31 | Isthmian League |
| 1926/27 | 10th | 26 | 10 | 2 | 14 | 59 | 86 | 22 | Isthmian League |
| 1927/28 | 11th | 26 | 9 | 5 | 12 | 60 | 69 | 23 | Isthmian League |
| 1928/29 | 10th | 26 | 10 | 3 | 13 | 58 | 60 | 23 | Isthmian League |
| 1929/30 | 7th | 26 | 10 | 4 | 12 | 49 | 52 | 24 | Isthmian League |
| 1930/31 | 3rd | 26 | 12 | 6 | 8 | 67 | 45 | 30 | Isthmian League |
| 1931/32 | 4th | 26 | 14 | 5 | 17 | 72 | 50 | 33 | Isthmian League |
| 1932/33 | 11th | 26 | 10 | 4 | 12 | 47 | 56 | 24 | Isthmian League |
| 1933/34 | 10th | 26 | 9 | 2 | 15 | 57 | 60 | 20 | Isthmian League |
| 1934/35 | 13th | 26 | 7 | 6 | 13 | 51 | 69 | 20 | Isthmian League |
| 1935/36 | 6th | 26 | 13 | 2 | 11 | 60 | 68 | 28 | Isthmian League |
| 1936/37 | 6th | 26 | 10 | 5 | 11 | 55 | 52 | 25 | Isthmian League |
| 1937/38 | 5th | 26 | 12 | 5 | 9 | 69 | 55 | 29 | Isthmian League |
| 1938/39 | 9th | 26 | 10 | 6 | 10 | 62 | 62 | 26 | Isthmian League |
| World War 2 Suspended Play | |||||||||
| 1945/46 | 9th | 26 | 9 | 3 | 14 | 80 | 88 | 21 | Isthmian League |
| 1946/47 | 7th | 26 | 9 | 8 | 9 | 63 | 62 | 26 | Isthmian League |
| 1947/48 | 11th | 26 | 7 | 5 | 14 | 51 | 65 | 19 | Isthmian League |
| 1948/49 | 11th | 26 | 11 | 2 | 13 | 49 | 61 | 24 | Isthmian League |
| 1949/50 | 8th | 26 | 9 | 7 | 10 | 51 | 52 | 25 | Isthmian League |
| 1950/51 | 11th | 26 | 8 | 3 | 15 | 46 | 64 | 19 | Isthmian League |
| 1951/52 | 6th | 26 | 12 | 5 | 9 | 64 | 59 | 29 | Isthmian League |
| 1952/53 | 8th | 28 | 14 | 2 | 12 | 54 | 62 | 30 | Isthmian League |
| 1953/54 | 3rd | 28 | 15 | 3 | 10 | 65 | 44 | 33 | Isthmian League |
| 1954/55 | 4th | 28 | 16 | 3 | 9 | 68 | 43 | 35 | Isthmian League |
| 1955/56 | 1st | 28 | 19 | 5 | 4 | 82 | 36 | 43 | Isthmian League |
| 1956/57 | 1st | 30 | 18 | 6 | 6 | 86 | 53 | 42 | Isthmian League |
| 1957/58 | 2nd | 30 | 19 | 4 | 7 | 78 | 42 | 42 | Isthmian League |
| 1958/59 | 3rd | 30 | 18 | 4 | 8 | 93 | 50 | 40 | Isthmian League |
| 1959/60 | 2nd | 30 | 19 | 3 | 8 | 84 | 46 | 41 | Isthmian League |
| 1960/61 | 8th | 30 | 12 | 5 | 13 | 63 | 61 | 29 | Isthmian League |
| 1961/62 | 7th | 30 | 12 | 7 | 11 | 57 | 51 | 31 | Isthmian League |
| 1962/63 | 9th | 30 | 10 | 10 | 10 | 56 | 61 | 30 | Isthmian League |
| 1963/64 | 13th | 38 | 13 | 6 | 19 | 74 | 80 | 32 | Isthmian League |
| 1964/65 | 13th | 38 | 13 | 7 | 18 | 70 | 85 | 33 | Isthmian League |
| 1965/66 | 4th | 38 | 25 | 6 | 7 | 100 | 65 | 56 | Isthmian League |
| 1966/67 | 3rd | 38 | 23 | 8 | 7 | 92 | 54 | 54 | Isthmian League |
| 1967/68 | 14th | 38 | 13 | 5 | 20 | 73 | 85 | 31 | Isthmian League |
| 1968/69 | 4th | 38 | 23 | 6 | 9 | 70 | 37 | 52 | Isthmian League |
| 1969/70 | 2nd | 38 | 25 | 11 | 2 | 85 | 24 | 61 | Isthmian League |
| 1970/71 | 1st | 38 | 28 | 6 | 4 | 93 | 32 | 62 | Isthmian League |
| 1971/72 | 1st | 40 | 31 | 3 | 6 | 102 | 20 | 65 | Isthmian League |
| 1972/73 | 4th | 42 | 25 | 6 | 11 | 66 | 32 | 56 | Isthmian League |
| 1973/74 | 1st | 42 | 27 | 9 | 6 | 96 | 34 | 90 | Isthmian League Division 1 |
| 1974/75 | 1st | 42 | 28 | 11 | 3 | 93 | 30 | 95 | Isthmian League Division 1 |
| 1975/76 | 2nd | 42 | 24 | 10 | 8 | 71 | 41 | 82 | Isthmian League Division 1 |
| 1976/77 | 2nd | 42 | 25 | 8 | 9 | 71 | 34 | 83 | Isthmian League Division 1 |
| The Isthmian League renamed its Divisions, Division 1 became the Premier Division | |||||||||
| 1977/78 | 3rd | 42 | 22 | 9 | 11 | 66 | 41 | 75 | Isthmian League Premier Division |
| 1978/79 | 6th | 42 | 20 | 9 | 13 | 59 | 44 | 69 | Isthmian League Premier Division |
| 1979/80 | 10th | 42 | 17 | 13 | 12 | 72 | 53 | 64 | Isthmian League Premier Division |
| 1980/81 | 3rd | 42 | 22 | 9 | 11 | 76 | 49 | 75 | Isthmian League Premier Division |
| 1981/82 | 3rd | 42 | 21 | 10 | 11 | 63 | 48 | 73 | Isthmian League Premier Division |
| 1982/83 | 1st | 42 | 26 | 7 | 9 | 79 | 47 | 85 | Isthmian League Premier Division |
| 1983/84 | 7th | 42 | 16 | 14 | 12 | 63 | 52 | 62 | Isthmian League Premier Division |
| 1984/85 | ▲3rd | 42 | 24 | 6 | 12 | 68 | 46 | 78 | Isthmian League Premier Division |
| 1985/86 | ▼20th | 42 | 10 | 13 | 19 | 55 | 84 | 36 | Alliance Premier League |
| 1986/87 | ▲1st | 42 | 32 | 5 | 5 | 103 | 32 | 101 | Isthmian League Premier Division |
| 1987/88 | 18th | 42 | 11 | 13 | 18 | 50 | 76 | 46 | Football Conference |
| 1988/89 | 4th | 40 | 20 | 11 | 9 | 68 | 52 | 71 | Football Conference |
| 1989/90 | 10th | 42 | 17 | 10 | 15 | 64 | 56 | 61 | Football Conference |
| 1990/91 | 5th | 42 | 21 | 11 | 10 | 75 | 46 | 74 | Football Conference |
| 1991/92 | 2nd | 42 | 30 | 4 | 8 | 84 | 35 | 94 | Football Conference |
| 1992/93 | ▲1st | 42 | 24 | 11 | 7 | 84 | 37 | 83 | Football Conference |
| 1993/94 | ♦▲4th | 42 | 19 | 13 | 10 | 67 | 53 | 70 | Football League Division 3 |
| 1994/95 | 6th | 46 | 21 | 15 | 10 | 60 | 46 | 78 | Football League Division 2 |
| 1995/96 | 12th | 46 | 15 | 15 | 16 | 63 | 59 | 60 | Football League Division 2 |
| 1996/97 | 18th | 46 | 15 | 10 | 21 | 51 | 56 | 55 | Football League Division 2 |
| 1997/98 | 14th | 46 | 14 | 18 | 14 | 51 | 53 | 60 | Football League Division 2 |
| 1998/99 | 19th | 46 | 13 | 12 | 21 | 52 | 58 | 51 | Football League Division 2 |
| 1999/00 | 12th | 46 | 16 | 13 | 17 | 56 | 53 | 61 | Football League Division 2 |
| 2000/01 | 13th | 46 | 15 | 14 | 17 | 46 | 53 | 59 | Football League Division 2 |
| 2001/02 | 11th | 46 | 17 | 13 | 16 | 58 | 64 | 64 | Football League Division 2 |
| 2002/03 | 18th | 46 | 13 | 13 | 20 | 59 | 66 | 52 | Football League Division 2 |
| 2003/04 | ▼24th | 46 | 6 | 19 | 21 | 50 | 75 | 37 | Football League Division 2 |
| The Football League renamed its Divisions, Division 3 became League 2 | |||||||||
| 2004/05 | 10th | 46 | 17 | 14 | 15 | 58 | 52 | 65 | Football League Two |
| 2005/06 | ♦►6th | 46 | 18 | 17 | 11 | 72 | 56 | 71 | Football League Two |
| 2006/07 | 12th | 46 | 16 | 14 | 16 | 52 | 47 | 62 | Football League Two |
| 2007/08 | ♦►7th | 46 | 22 | 12 | 12 | 56 | 42 | 78 | Football League Two |
| 2008/09 | ▲3rd | 46 | 20 | 18 | 8 | 54 | 33 | 78 | Football League Two |
| 2009/10 | ▼22nd | 46 | 10 | 15 | 21 | 56 | 76 | 45 | Football League One |
| 2010/11 | ▲3rd | 46 | 22 | 14 | 10 | 69 | 50 | 80 | Football League Two |
| 2011/12 | ▼21st | 46 | 11 | 10 | 25 | 65 | 88 | 43 | Football League One |
| 2012/13 | 15th | 46 | 17 | 9 | 20 | 50 | 60 | 60 | Football League Two |
| 2013/14 | 22nd | 46 | 12 | 14 | 20 | 46 | 54 | 50 | Football League Two |
| 2014/15 | ♦►4th | 46 | 23 | 15 | 8 | 67 | 45 | 84 | Football League Two |
| 2015/16 | 13th | 46 | 17 | 13 | 16 | 45 | 44 | 64 | Football League Two |
| 2016/17 | 9th | 46 | 19 | 12 | 15 | 58 | 53 | 69 | English Football League Two |
| 2017/18 | ▲3rd | 46 | 24 | 12 | 10 | 79 | 60 | 84 | English Football League Two |
| 2018/19 | 17th | 46 | 14 | 11 | 21 | 55 | 67 | 53 | English Football League One |
| 2019/20 | ♦▲3rd | 34 | 17 | 8 | 9 | 45 | 40 | 59 | English Football League One |
| 2020/21 | ▼22nd | 46 | 11 | 10 | 25 | 39 | 69 | 43 | English Football League Championship |
| 2021/22 | ♦►6th | 46 | 23 | 14 | 9 | 75 | 51 | 83 | English Football League One |
| 2022/23 | 9th | 46 | 20 | 9 | 17 | 59 | 51 | 69 | English Football League One |
| 2023/24 | 10th | 46 | 17 | 14 | 15 | 60 | 55 | 65 | English Football League One |
| 2024/25 | ♦►5th | 46 | 24 | 12 | 10 | 70 | 45 | 84 | English Football League One |
| 2025/26 | - | - | - | - | - | - | - | - | English Football League One |