Before (end of 1989) (39 seats, Elections Centre)
Conservative 22 · Labour 12 · Liberal Democrats 5 · Other 0
After (end of 1990) (39 seats, Elections Centre)
Conservative 22 · Labour 12 · Liberal Democrats 4 · Other 1
Ward results
ALDENHAM EAST1 seat · turnout 50.6%
| A. Gattward | Conservative | 1,233 |
| R. Page | Labour | 293 |
| J. Dennes | SLD | 251 |
Brookmeadow1 seat · turnout 48.8%
| A. Whitby | Labour | 1,219 |
| A. Savage | Conservative | 251 |
ELSTREE1 seat · turnout 49.8%
| Karoline Lamb | Independent | 1,134 |
| C. Watts | Conservative | 970 |
Heath North1 seat · turnout 45.6%
| S. Swerling | Conservative | 932 |
| D. Hoeksma | Labour | 446 |
| D. Ewington | SLD | 441 |
Heath South1 seat · turnout 42.5%
| R. Gealy | Conservative | 1,062 |
| D. Bearfield | Labour | 335 |
| P. Forsyth | SLD | 252 |
Kenilworth1 seat · turnout 47.7%
| B. Stanley | Labour | 1,083 |
| R. Pavitt | Conservative | 339 |
Mill1 seat · turnout 55.5%
| M. Colne | SLD | 1,217 |
| B Flashman | Conservative | 396 |
| S. Mercado | Labour | 308 |
Potters Bar Central1 seat · turnout 49.0%
| I. Fielding | Conservative | 670 |
| B. Kerr | Labour | 469 |
| J. Hurd | SLD | 407 |
Potters Bar East1 seat · turnout 50.7%
| H. Spratt | Conservative | 1,051 |
| P. Caylor | Labour | 980 |
| M. Allan | SLD | 377 |
Potters Bar North1 seat · turnout 45.6%
| M. Byrne | Conservative | 1,106 |
| J. Clark | Labour | 312 |
| C. Dean | SLD | 261 |
Potters Bar South1 seat · turnout 51.3%
| R. Morris | Conservative | 652 |
| P. Bradbury | Labour | 604 |
| D. Martin | SLD | 213 |
St. James East1 seat · turnout 49.1%
| E. Gadsden | SLD | 674 |
| C. Keates | Conservative | 452 |
| P Halsey | Labour | 358 |
St. James West1 seat · turnout 52.9%
| D. Chettleburgh | Conservative | 828 |
| A. Golland | SLD | 670 |
| G. De Groot | Labour | 323 |
