Before (end of 1998)
Not known.
After (end of 1999)
Not known.
Ward results
Hatfield Central3 seats · turnout 27.4%
| Maureen Cook | Labour | 607 |
| C. Croft | Labour | 594 |
| Susana Tinsley | Labour | 562 |
| R. Griffiths | Liberal Democrats | 479 |
| Hazel Marion Laming | Liberal Democrats | 455 |
| C. Ventimigla | Conservative | 305 |
| A. Peffer | Conservative | 270 |
| D. Perkins | Conservative | 254 |
Northaw3 seats · turnout 26.9%
| J. Mansfield | Conservative | 883 |
| J. Nicholls | Conservative | 816 |
| R. Thomas | Conservative | 752 |
| J. Cheetham | Independent | 269 |
| R. Dubow | Liberal Democrats | 204 |
| A. Allgood | Labour | 199 |
| A. Goose | Liberal Democrats | 140 |
| Jennifer Blumson | Liberal Democrats | 130 |
Welham Green2 seats · turnout 33.7%
| Patricia Storey | Conservative | 592 |
| K. Pieri | Conservative | 541 |
| Brenda Marcus | Labour | 287 |
| T. Deacon | Labour | 277 |
| J. Corbishley | Liberal Democrats | 121 |
| P. Douglas | Liberal Democrats | 83 |
Welwyn North2 seats · turnout 29.6%
| Julie Cragg | Conservative | 658 |
| Margaret Scarff | Conservative | 643 |
| Jan Burnell | Labour | 202 |
| Penny Henderson | Labour | 189 |
| D. Bartlett | Liberal Democrats | 169 |
| D. Wiseman | Liberal Democrats | 145 |