Before (end of 1997) (57 seats, Elections Centre)
Liberal Democrats 39 · Labour 11 · Conservative 5 · Other 2
After (end of 1998) (57 seats, Elections Centre)
Liberal Democrats 30 · Labour 16 · Conservative 11 · Other 0
Ward results
Ashley1 seat · turnout 37.9%
| N. Brosnan | Labour | 1,073 ✓ |
| P. Riley | Liberal Democrats | 717 |
| P. Spratt | Conservative | 223 |
Batchwood1 seat
| D. McManus | Labour | 987 ✓ |
| J. Vessey | Conservative | 295 |
| R Law | Liberal Democrats | 234 |
Clarence1 seat
| Sheila Burton | Liberal Democrats | 931 ✓ |
| W Niblett | Labour | 597 |
| J Christie | Conservative | 279 |
Colney Heath1 seat
| J. Henchley | Liberal Democrats | 565 ✓ |
| D. Jeffrey | Conservative | 262 |
| G. Watson | Labour | 260 |
Cunningham2 seats · turnout 42.0%
| A Gilson | Labour | 910 ✓ |
| L Heyman | Labour | 865 ✓ |
| Harrison G. | Liberal Democrats | 833 |
| J. Winder | Liberal Democrats | 778 |
| Leonard G. | Conservative | 346 |
| Rosalki L-J. | Conservative | 323 |
Harpenden East1 seat
| D Waddilove | Liberal Democrats | 769 ✓ |
| V Holley | Conservative | 665 |
| D. Crew | Labour | 329 |
Harpenden North1 seat
| A Pawle | Conservative | 759 ✓ |
| J Coad | Liberal Democrats | 736 |
| R Botterill | Labour | 314 |
Harpenden South1 seat · turnout 36.1%
| P Foster | Conservative | 1,125 ✓ |
| K. Sutton | Liberal Democrats | 503 |
| Linda Ann Spiri | Labour | 277 |
| P. Saunders | Nlp | 14 |
Harpenden West2 seats · turnout 33.2%
| J. Turner | Conservative | 1,139 ✓ |
| Daly J. | Conservative | 1,138 ✓ |
| J. Arthur | Liberal Democrats | 418 |
| P Spinks | Liberal Democrats | 373 |
| J. Thompson | Labour | 283 |
| J. Bush | Labour | 264 |
London Colney1 seat
| Flynn S. | Labour | 1,094 ✓ |
| M. Shaw | Conservative | 260 |
| Priestman D. | Liberal Democrats | 179 |
Marshalswick North1 seat · turnout 34.8%
| G. Churchard | Liberal Democrats | 781 ✓ |
| Chris Whiteside | Conservative | 623 |
| E. McShane | Labour | 282 |
Marshalswick South1 seat · turnout 40.2%
| Anthony Rowlands | Liberal Democrats | 1,141 ✓ |
| A. Hill | Conservative | 580 |
| D Allan | Labour | 380 |
Park Street1 seat
| E. Hendry | Liberal Democrats | 499 ✓ |
| Batson K. | Conservative | 396 |
| M. Morley | Labour | 338 |
Redbourn1 seat · turnout 37.9%
| P. Schofield | Liberal Democrats | 765 ✓ |
| P Finigan | Conservative | 723 |
| Vivienne Windle | Labour | 249 |
Sopwell1 seat · turnout 28.1%
| J. Gibbs | Labour | 1,076 ✓ |
| P. Thomas | Conservative | 223 |
| D. Terrar | Liberal Democrats | 172 |
St Peters1 seat · turnout 33.9%
| W. Dunleavy | Labour | 867 ✓ |
| R. Biddle | Liberal Democrats | 644 |
| Brown G. | Conservative | 226 |
St. Stephens1 seat · turnout 35.6%
| G. Myland | Conservative | 951 ✓ |
| K. Moghul | Liberal Democrats | 791 |
| J. Blackwell | Labour | 444 |
Wheathampstead1 seat · turnout 41.4%
| C. Oxley | Liberal Democrats | 852 ✓ |
| G. Clark | Conservative | 827 |
| M Fletcher | Labour | 314 |