|1901||Club Established as Founder Members of the North Herts League.|
|1901-07||Played in the North Herts League – no data available.|
|1907||Joined the Herts County League Northern Division, whilst concurrently competing in the North Herts League.|
|1913||Left the Herts County League, competing only the North Herts League.|
|1910-48||Five times North Herts League Champions: 1910/11, 1924/25, 1925/26, 1930/31 & 1946/47.|
|1948||Rejoined the Herts County League in Division Two.|
|1952/53||Division Two Champions, gaining promotion to Division One.|
|1962/63||Normal league programme cancelled, an emergency competition ran instead; crowned Herts County League Division One ‘A’ Champions.|
|1964||Promoted to the Herts County League Premier Division.|
|1973/74||Herts County League Champions.|
|1976||Relegated to Division One.|
|1976/77||Division One Champions and Aubrey Cup Winners.Promoted to the Premier Division.|
|1983||Left the Herts County League and joined the South Midlands League, enjoying crowds of up to 600 people.|
|1988/89||Returned to the North Herts League in 1988 winning the Benevolent Shield and Greg Cup.|
|1989/90||North Herts League Premier Division Champions and Reserve Cup Winners.|
|1990||Rejoined the Herts Senior County League (Formerly Herts County League). Placed in Division Two.|
|1990/91||Gained promotion to Division One.|
|1991/92||Promoted to the Premier Division.|
|1995||The Club folded after losing its ground to development.|
North Herts Football League
Champions: 1910/11, 1924/25, 1925/26, 1930/31, 1946/47 & 1989/90.
All as Division One Champions except 1989/90, when Premier Division Champions.
Greg Cup Winners: 1922/23, 1946/47 & 1988/89.
Benevolent Shield Winners: 1929/30, 1945/46 & 1988/89.
Division Three Cup Winners: 1928/29(R) & 1946/47(R).
Reserves Cup Winners: 1989/90.
Herts County FA
Junior Cup Winners: 1912/13.
Herts County League
Premier Division Champions: 1973/74.
Division One ‘A’ Champions: 1962/63.
Division One Champions: 1976/77 & 1977/78(R).
Division Two Champions: 1952/53.
Division Three Champions: 1965/66.
Reserves Division Three Champions: 1990/91.
Aubrey Cup Winners: 1976/77.
Reserves Cup Winners: 1970/71, 1972/73, 1976/77, 1977/78.
South Midlands League
Reserves Challenge Trophy: 1983/84.
Reserves successes in open competition against first teams from other clubs are signified by (R).
1999 to present
|1999||Knebworth Football Club was reformed from an Under 18 side moving into Senior football, joining the Hertford & District Football League.|
|1999/2000||Promoted to Division One and finalists in the Division Two Cup.|
|2000/01||Division One Champions, with one draw and a loss in twenty-four league matches, and finalists in the Division One Cup.|
|2001/02||Finished Fourth in the Premier Division.|
|2002/03||Finished Third in the Premier Division. Reserve side added to the current set-up, joining the North Herts League in Division One (second division of a two-tier system) and finished Fourth.|
|2003/04||The Club rejoined the Herts Senior County League, finishing 8th from 16 in Senior Division One (second division of a two-tier system). Reserves finished 4th from 13 in Reserve Division Two (second division of a two-tier system), missing out on promotion on goal difference.|
|2004/05||Finished 6th from 14 in Senior Division One. Reserves finished 4th from 13 in Reserve Division Two.|
|2005/06||Finished 3rd from 14 in Senior Division One, gaining promotion to the Premier Division and reached the Semi Final stage of the Herts Intermediate Cup. Reserves finished 3rd from 13 in Reserve Division Two, gaining promotion to Reserve Division One.|
|2006/07||Finished 13th from 16 in the Premier Division. Reserves finished 9th from 13 in Reserve Division One.|
|2007/08||Finished 13th from 16 in the Premier Division. Reserves finished 6th from 13 in Reserve Division One.|
|2008/09||Finished 15th from 16 in the Premier Division, relegated to Division One. Reserves finished 13th from 13 in Reserve Division One, relegated to Division Two.|
|2009/10||Finished 11th from 16 in Senior Division One. Reserves finished 8th from 12 in Reserve Division Two.|
|2010/11||Finished 9th from 15 in Senior Division One. Reserves finished 5th from 10 in Reserve Division Two.|
|2011/12||Finished 3rd from 16 in Senior Division One, gaining promotion to the Premier Division. Reserves finished 3rd from 10 in Reserve Division Two, gaining promotion to Reserve Division One.|
|2012/13||Finished 15th from 16 in the Premier Division, reprieved from relegation. Reserves finished 12th from 12 in Reserve Division One. Reserve section regionalised for 2013/14 season.|
|2013/14||Finished 16th from 16 in the Premier Division, relegated to Division One. Reserves finished 7th from 11 in the South & West Reserve & Development Division.|
North Herts Greg Cup
McMullen Hertford & District Football League
Division One Champions: 2000/01.
Hertfordshire’s Charter Standard Adult Club of the Year: 2005