Updated to match(es) played on 7 May 1978. Source: The Football Archives Rules for classification: 1) points; 2) goal difference; 3) number of goals scored.
The points system up until the 1982–83 season: 2 points for a win, 1 point for a draw and 0 points for losing. (C) Champions; (P) Promoted
Out of the twenty-four clubs from the Northern Premier League, two teams reached the fourth round:
Fourth Round
Home Team
Score
Away Team
Altrincham
4–2
Winsford United
Merthyr Tydfil
0–0
Runcorn
Runcorn
3–2
Merthyr Tydfil
Semi-finals
Stage
Home Team
Score
Away Team
1st Leg
Altrincham
0–0
Runcorn
2nd Leg
Runcorn
0–1
Altrincham
Aggregate
Altrincham
1–0
Runcorn
Final
Home Team
Score
Away Team
Altrincham
3–1
Leatherhead
End of the season
At the end of the tenth season of the Northern Premier League, Wigan Athletic who was put forward for election, received enough votes, on the second round of voting, to be promoted to the Football League. Great Harwood folded Great Harwood Town replaced in Lancashire Combination
Football League elections
Alongside the four Football League teams facing re-election, two non-League teams, one from the Northern Premier League and the other from the Southern League, applied to be elected. Three out of the four Football League teams were re-elected. Wigan Athletic from the Northern Premier League tied with Southport from the Football League on the first round of voting. A second round was then implemented with Wigan Athletic gaining promotion, replacing Southport from the Football League as they did not receive enough votes. Southport was subsequently relegated to the Northern Premier League.[2]