The Premier Division sits immediately below the lowest level of the National League System – Step 7.

Other teams have moved to the South Midlands League from a lower level, skipping the Premier Division.

Both Bletchley Town and MK Wanderers moved from the North Bucks Division One to the Spartan South Midlands Division Two for the 2008–09 season, although Milton Keynes Wanderers did resign early in the following season after a string of heavy defeats and resumed membership of the North Bucks & District League.

The Challenge Trophy is open to all of the league's teams, but is split into four sections, so that there is a separate competition for each division.

[4] See the 2016-17 results [5] [6] [7] [8] Current Premier Division sides Bow Brickhill and Buckingham Town Reserves have competed at a higher level.

Mursley United play in the division below Buckingham Athletic, having left the North Bucks League in 1996, three years after joining it.

Newport Pagnell joined the North Bucks League after formation in 1963 before gaining promotion in 1972.

Brackley Town are the ex-North Bucks League side that play at the highest level; they currently participate in the Conference North and hold the record the ex-North Bucks League member making the longest run in the FA Cup, achieving appearances in the FA Cup Second Round Proper in 2013 and 2024.

Seven years later, competition was interrupted by global conflict for the second time in the form of the Second World War.

[37] This is an incomplete list of clubs that have been North Bucks League champions in order of success.