Before (end of 1985) (39 seats, Elections Centre)
Conservative 25 · SDP-Liberal Alliance 12 · Labour 2 · Other 0
After (end of 1986) (39 seats, Elections Centre)
Conservative 24 · SDP-Liberal Alliance 13 · Labour 2 · Other 0
Ward results
Brentwood North1 seat · turnout 52.3%
| B. Aspinell | Lib/Sdp | 1,153 |
| R. Sadler | Conservative | 1,004 |
| K Maxey | Labour | 264 |
Brentwood South1 seat · turnout 57.6%
| D. Minns | Labour | 1,097 |
| M. Willis | Conservative | 907 |
| R. McFarland | Lib/Sdp | 469 |
Brentwood West1 seat · turnout 48.1%
| B. Smith | Conservative | 923 |
| E. Bonner | Lib/Sdp | 742 |
| G. Bender | Labour | 333 |
Brizes & Doddinghurst1 seat · turnout 45.1%
| J. Haskell | Lib/Sdp | 1,225 |
| A. Witts | Conservative | 871 |
| L. Green | Labour | 220 |
Hutton East1 seat · turnout 43.1%
| B. Mison | Conservative | 649 |
| M. Brown | Lib/Sdp | 537 |
| P. Caira | Labour | 508 |
Hutton North1 seat · turnout 53.0%
| R French | Conservative | 773 |
| M. Gibbs | Lib/Sdp | 708 |
| R. Cragg | Labour | 230 |
Ingatestone & Fryerning1 seat · turnout 59.4%
| C. Dale | LIB | 1,186 |
| K. Brown | Conservative | 1,059 |
| R. Tattersall | Labour | 133 |
Pilgrims Hatch1 seat · turnout 43.8%
| N. Amor | Lib/Sdp | 1,105 |
| J. Gray | Conservative | 627 |
| L. Southgate | Labour | 537 |
South Weald1 seat · turnout 69.0%
| J. Shawcross | Lib/Sdp | 503 |
| Black G. | Conservative | 268 |
| F. Keohane | Labour | 40 |
Warley1 seat · turnout 42.8%
| J. Struthers | Conservative | 931 |
| T. Hopkins | Labour | 486 |
| J. Gurny | Lib/Sdp | 422 |
West Horndon1 seat · turnout 62.7%
| L. Willis | Lib/Sdp | 439 |
| D. Ramsey | Conservative | 289 |
| S. Mound | Labour | 66 |