The 2003-04 season was the 100th in the history of the Southern League

Southern Football League

The Southern League is an English football competition featuring semi-professional and amateur clubs from the South West, South Central and Midlands of England and South Wales...

. The season began on 16 August 2003 and ended on 8 May 2004 with the play-off finals.

At the end of the season the National League System

National League System

The National League System comprises the seven levels of the English football league system immediately below the level of the Premier League and The Football League. It contains 91 league competitions and more than 1,600 clubs. It comes under the jurisdiction of The Football Association...

 was reorganised. A new Conference North

Conference North

The Conference North also known as Blue Square Bet North for sponsorship reasons, is a division of the Football Conference in England, taking its place immediately below the Conference National. Along with Conference South it is at Step 2 of the National League System and the sixth overall tier of...

 and South

Conference South

Conference South is one of the second divisions of the Football Conference in England, taking its place immediately below the Conference National...

 was to be formed from the top teams in the Northern Premier League

Northern Premier League

The Northern Premier League, is one of the regional English football leagues which sits directly below the Football Conference featuring semi-professional and amateur clubs. Geographically, the league covers all of Northern England, and the northern areas of the Midlands. Originally just one...

, Southern League and Isthmian League

Isthmian League

The Isthmian League is a regional football league covering London and South East England featuring semi-professional and amateur clubs. It is sponsored by Ryman, and therefore officially known as the Ryman League. It was founded in 1905 by amateur clubs in the London area...

 as follows:

From the Southern League:

• The top position of the Premier Division promoted to the newly-named Conference National
  Conference National
  Conference National is the top division of the Football Conference in England. It is the highest level of the National League System and fifth highest of the overall English football league system...
  
  .
• Positions 2-13 of the Premier Division qualified for Conference North/South.
• Positions 14-18 joined by winners of the Eastern and Western Divisions in play-offs for two places in Conference North/South.
• Play-off losers and positions 19-22 remain in the Premier Division or move to the Isthmian League
  Isthmian League
  The Isthmian League is a regional football league covering London and South East England featuring semi-professional and amateur clubs. It is sponsored by Ryman, and therefore officially known as the Ryman League. It was founded in 1905 by amateur clubs in the London area...
  
  .

Premier Division

Pos	|Team	|Pld	|W	|D	|L	|F	|A	|GD	|Pts	Notes
1		42	25	9	8	77	43	34	84	Promoted to Conference National Conference National Conference National is the top division of the Football Conference in England. It is the highest level of the National League System and fifth highest of the overall English football league system...
2		42	20	12	10	76	47	29	72	Qualified for Conference South Conference South Conference South is one of the second divisions of the Football Conference in England, taking its place immediately below the Conference National...
3		42	19	11	12	55	43	12	68	Qualified for Conference North Conference North The Conference North also known as Blue Square Bet North for sponsorship reasons, is a division of the Football Conference in England, taking its place immediately below the Conference National. Along with Conference South it is at Step 2 of the National League System and the sixth overall tier of...
4		42	17	15	10	65	49	16	66	Qualified for Conference North Conference North The Conference North also known as Blue Square Bet North for sponsorship reasons, is a division of the Football Conference in England, taking its place immediately below the Conference National. Along with Conference South it is at Step 2 of the National League System and the sixth overall tier of...
5		42	18	9	15	71	50	21	63	Qualified for Conference North Conference North The Conference North also known as Blue Square Bet North for sponsorship reasons, is a division of the Football Conference in England, taking its place immediately below the Conference National. Along with Conference South it is at Step 2 of the National League System and the sixth overall tier of...
6		42	15	14	13	55	46	9	59	Qualified for Conference North Conference North The Conference North also known as Blue Square Bet North for sponsorship reasons, is a division of the Football Conference in England, taking its place immediately below the Conference National. Along with Conference South it is at Step 2 of the National League System and the sixth overall tier of...
7		42	15	14	13	52	50	2	59	Qualified for Conference South Conference South Conference South is one of the second divisions of the Football Conference in England, taking its place immediately below the Conference National...
8		42	14	15	13	54	53	1	57	Qualified for Conference South Conference South Conference South is one of the second divisions of the Football Conference in England, taking its place immediately below the Conference National...
9		|42	16	8	18	56	58
56	Qualified for Conference South Conference South Conference South is one of the second divisions of the Football Conference in England, taking its place immediately below the Conference National...
10		42	14	13	15	52	52	0	55	Qualified for Conference South Conference South Conference South is one of the second divisions of the Football Conference in England, taking its place immediately below the Conference National...
11		42	14	13	15	48	56
55	Qualified for Conference South Conference South Conference South is one of the second divisions of the Football Conference in England, taking its place immediately below the Conference National...
12		42	15	10	17	59	70
55	Qualified for Conference South Conference South Conference South is one of the second divisions of the Football Conference in England, taking its place immediately below the Conference National...
13		42	14	12	16	42	54
54	Qualified for Conference North Conference North The Conference North also known as Blue Square Bet North for sponsorship reasons, is a division of the Football Conference in England, taking its place immediately below the Conference National. Along with Conference South it is at Step 2 of the National League System and the sixth overall tier of...
14		42	13	14	15	60	66
53
15		42	12	15	15	63	64
51
16		42	13	12	17	49	56
51
17		42	14	9	19	56	69
51	Qualified for Conference South Conference South Conference South is one of the second divisions of the Football Conference in England, taking its place immediately below the Conference National...
18		42	11	16	15	46	53
49	Transferred to Isthmian League Isthmian League The Isthmian League is a regional football league covering London and South East England featuring semi-professional and amateur clubs. It is sponsored by Ryman, and therefore officially known as the Ryman League. It was founded in 1905 by amateur clubs in the London area...
19		42	12	13	17	50	59
49	Transferred to Isthmian League Isthmian League The Isthmian League is a regional football league covering London and South East England featuring semi-professional and amateur clubs. It is sponsored by Ryman, and therefore officially known as the Ryman League. It was founded in 1905 by amateur clubs in the London area...
20		42	12	12	18	56	69
48
21		42	10	17	15	51	63
47
22		42	10	15	17	45	67
45

Key
	Division Champions
	Failed to qualify

Play-offs

qualified for the Conference South

Conference South

Conference South is one of the second divisions of the Football Conference in England, taking its place immediately below the Conference National...

qualified for the Conference North

Conference North

The Conference North also known as Blue Square Bet North for sponsorship reasons, is a division of the Football Conference in England, taking its place immediately below the Conference National. Along with Conference South it is at Step 2 of the National League System and the sixth overall tier of...