Before (end of 1986) (43 seats, Elections Centre)
Labour 24 · Conservative 17 · SDP-Liberal Alliance 2 · Other 0
After (end of 1987) (43 seats, Elections Centre)
Labour 23 · Conservative 18 · SDP-Liberal Alliance 2 · Other 0
Ward results
Brookmans Park & Little Heath1 seat · turnout 54.0%
| F. Matthews | Conservative | 1,843 |
| R. Hodsdon | All | 378 |
| D. Dunk | Labour | 132 |
Haldens1 seat · turnout 47.2%
| M. Larkins | Labour | 1,785 |
| A. Ryder | Conservative | 1,359 |
| G. Hyslop | All | 835 |
Handside1 seat · turnout 63.5%
| T. Skottowe | All | 1,392 |
| J. Bridges | Conservative | 1,372 |
| O. Dowlen | Labour | 444 |
Hatfield East1 seat · turnout 49.6%
| L. Hulks | Conservative | 1,498 |
| R Bruce | Labour | 795 |
| J. Edell | All | 576 |
Hatfield North1 seat · turnout 51.8%
| T. Freeman | Labour | 1,016 |
| K. Maclean | Conservative | 901 |
| J. Monro | All | 485 |
Hatfield West1 seat · turnout 52.7%
| Margaret Scarff | Conservative | 1,110 |
| M. Birleson | Labour | 1,017 |
| R. Griffiths | All | 660 |
Hollybush1 seat · turnout 52.8%
| F Clayton | Labour | 1,257 |
| N. Lloyd-Jones | Conservative | 654 |
| T. Richardson | All | 407 |
Northaw & Cuffley1 seat · turnout 51.4%
| P. Branker | Conservative | 1,792 |
| B. Parkinson | All | 277 |
| D. May | Labour | 153 |
Sherrards1 seat · turnout 65.0%
| G. Ayerst | Conservative | 1,272 |
| J. Lonergan | Labour | 1,200 |
| Cooke | Lib/Sdp | 686 |
Welwyn South2 seats · turnout 53.9%
| R. Smith | Conservative | 947 |
| A. Hewson | Conservative | 940 |
| B. Ridgewell | Labour | 342 |
| J. Mitchell | Labour | 338 |
| J. Blackburn | All | 324 |
| I. Skidmore | All | 320 |
