Before (end of 1999)
Not known.
After (end of 2000)
Not known.
Ward results
Harpenden East1 seat
| B. Peyton | Liberal Democrats | 974 |
| D. Crew | Labour | 277 |
| P. Saunders | Nlp | 37 |
Harpenden West1 seat
| P. Spinks | Liberal Democrats | 323 |
| R. Ough | Labour | 244 |
London Colney1 seat
| D. Caroline | Conservative | 358 |
| R. Prowse | Liberal Democrats | 208 |
Wheathampstead1 seat
| P. Edelston | Liberal Democrats | 736 |
| M. Fletcher | Labour | 170 |