Before (end of 1978) (45 seats, Elections Centre)
Labour 24 · Conservative 20 · The Liberal Party 1 · Other 0
After (end of 1979) (45 seats, Elections Centre)
Labour 27 · Conservative 18 · The Liberal Party 0 · Other 0
Ward results
Billinge & Seneley Green1 seat
| B. Lowe | Conservative | 3,761 |
| J. Littler | Labour | 3,485 |
No. 10 (Newton-Le-Willows: Newton & Wargrave)1 seat · turnout 79.4%
| A. Roberts | Labour | 3,317 ✓ |
| J. Rathbone | Conservative | 2,159 |
| E. Sherlock | The Liberal Party | 1,031 |
No. 5 (St. Helens: North Eccleston & South Windle)1 seat · turnout 73.8%
| J. Greenall | Labour | 2,841 ✓ |
| E. Clough | Conservative | 2,150 |
No. 7 (St. Helens: West Sutton)1 seat · turnout 70.9%
| W. Naylor | Labour | 6,009 |
| D. Kay | Conservative | 2,922 |
Rainford1 seat
| J. Dyson | Conservative | 3,935 |
| K. O'Grady | Labour | 1,480 |