Before (end of 1985) (42 seats, Elections Centre)
Labour 24 · Conservative 15 · SDP-Liberal Alliance 3 · Other 0
After (end of 1986) (42 seats, Elections Centre)
Labour 22 · Conservative 13 · SDP-Liberal Alliance 7 · Other 0
Ward results
Billericay East1 seat · turnout 41.1%
| A. Archer | Conservative | 1,936 |
| K. Jessop | Lib/Sdp | 1,015 |
| I. Harlow | Labour | 592 |
Billericay West3 seats · turnout 42.3%
| G. Dighton | Conservative | 2,347 |
| C. Lees | Conservative | 2,340 |
| F. Tomlin | Conservative | 2,302 |
| J. Morley | Lib/Sdp | 1,128 |
| G. Taylor | Lib/Sdp | 1,103 |
| A. Banton | Lib/Sdp | 1,020 |
| Michael Baker | Labour | 366 |
| J. Orpe | Labour | 304 |
| Caira-Neeson S. | Labour | 301 |
Burstead1 seat · turnout 46.0%
| T. Leask | Conservative | 1,912 |
| G. Bellard | Lib/Sdp | 1,422 |
| J. Kemp | Labour | 579 |
Fryerns Central1 seat · turnout 36.3%
| M. Cregg | Labour | 2,112 |
| J. White | Lib/Sdp | 590 |
| R. Sheridan | Conservative | 514 |
Fryerns East1 seat · turnout 34.8%
| J. Potter | Labour | 1,815 |
| J. Lutton | Lib/Sdp | 667 |
| A Elliott | Conservative | 431 |
Langdon Hills1 seat · turnout 39.0%
| K. Lack | Lib/Sdp | 1,500 |
| L. Webb | Labour | 991 |
| H Tucker | Conservative | 488 |
Lee Chapel North1 seat · turnout 36.5%
| P. Moloney | Labour | 1,797 |
| P. Edgell | Lib/Sdp | 578 |
| I. Harbott | Conservative | 535 |
Nethermayne1 seat · turnout 52.8%
| G. Williams | Lib/Sdp | 1,851 |
| Bruce M. | Labour | 1,527 |
| E. Dines | Conservative | 742 |
Pitsea East1 seat · turnout 33.5%
| R. Fallon | Labour | 1,815 |
| D. Osborne | Conservative | 941 |
| L. Williams | Lib/Sdp | 406 |
Pitsea West1 seat · turnout 35.9%
| H. Tinworth | Labour | 2,222 |
| B. Weedon | Conservative | 584 |
| D. Richardson | Lib/Sdp | 375 |
Wickford North1 seat · turnout 46.6%
| M. Birch | Lib/Sdp | 1,613 |
| B. Pummell | Conservative | 1,451 |
| C. Wilson | Labour | 870 |
Wickford South1 seat · turnout 42.5%
| F. Bellard | Lib/Sdp | 2,144 |
| J. Whellem | Conservative | 1,026 |
| L. Martin | Labour | 516 |