Before (end of 1978)
Not known.
After (end of 1979)
Not known.
Ward results
Hatfield Central1 seat · turnout 79.7%
| T. Welham | Labour | 2,025 |
| J. Metcalfe | Conservative | 1,461 |
| A. McKie | LIB | 330 |
Hatfield South1 seat · turnout 81.6%
| Gillen C. | Labour | 2,071 |
| P. Barnes | Conservative | 1,848 |
| B. Monrow | LIB | 407 |
Howlands1 seat · turnout 82.2%
| J. Lonergan | Labour | 2,151 |
| G. Perry | Conservative | 1,473 |
| M. Cowan | LIB | 460 |
Welham Green & Redhall1 seat · turnout 84.0%
| J. McDonald | Labour | 2,360 |
| B. Storey | Conservative | 2,053 |
Welwyn North1 seat · turnout 84.3%
| D. Carpenter | Conservative | 2,392 |
| B. Emmerson | Labour | 738 |