Before (end of 1987) (39 seats, Elections Centre)
Conservative 22 · Labour 12 · SDP-Liberal Alliance 5 · Other 0
After (end of 1988) (39 seats, Elections Centre)
Conservative 22 · Labour 12 · Liberal Democrats 5 · Other 0
Ward results
Aldenham West1 seat · turnout 45.1%
| I. Southern | Conservative | 898 |
| A. Page | Labour | 429 |
| C. Treves-Brown | SDP | 259 |
Cowley1 seat · turnout 28.9%
| P. Roach | Labour | 759 |
| C. Sullivan | Conservative | 388 |
| H. Brass | SLD | 77 |
Heath North1 seat · turnout 35.3%
| B. Batten | Conservative | 910 |
| G. Hillier | SLD | 277 |
| D. Hoeksma | Labour | 199 |
Heath South1 seat · turnout 37.8%
| P. Riches | Conservative | 1,017 |
| R. Brown | SDP | 199 |
| D. Bearfield | Labour | 182 |
Hillside1 seat · turnout 39.8%
| J. Kentish | Labour | 706 |
| D. Chettleburgh | Conservative | 552 |
| M. Kirsh | SDP | 99 |
Lyndhurst1 seat · turnout 35.3%
| G. Franklin | Labour | 733 |
| P. Poole | Conservative | 509 |
| L. Reefe | SDP | 153 |
Potters Bar Central1 seat · turnout 42.7%
| P. Spratt | Conservative | 690 |
| D. Martin | SLD | 367 |
| N. Bradbury | Labour | 295 |
Potters Bar North1 seat · turnout 37.4%
| M. Johnson | Conservative | 1,061 |
| L. Martin | SLD | 206 |
| J. Clark | Labour | 119 |
Potters Bar South1 seat · turnout 36.0%
| G. Ferguson | Conservative | 697 |
| R. Angel | Labour | 240 |
| P. Shannon | SLD | 104 |
Potters Bar West1 seat · turnout 36.2%
| J. Paterson | Conservative | 789 |
| J. Cryer | Labour | 299 |
| J. Hurd | SLD | 237 |
St. James East1 seat · turnout 45.1%
| L. Hodgson | SLD | 750 |
| J. McKenzie | Conservative | 504 |
| P Halsey | Labour | 159 |
St. James West1 seat · turnout 48.8%
| A. Attwood | Conservative | 967 |
| A. Golland | SLD | 580 |
| S. Schofield | Labour | 156 |