Before (end of 1984) (70 seats, Elections Centre)
Labour 56 · Conservative 10 · Other 4 · Plaid Cymru - The Party of Wales 0 · SDP-Liberal Alliance 0
After (end of 1985) (70 seats, Elections Centre)
Labour 54 · Conservative 7 · SDP-Liberal Alliance 5 · Other 4 · Plaid Cymru - The Party of Wales 0
Ward results
Aberavon East & West3 seats · turnout 39.6%
| C. Crowley | Labour | 3,703 |
| C. Lewis | Labour | 3,389 |
| P. Jones | Labour | 3,310 |
| T. Johnston | Sdp/All | 1,090 |
| E. Prescott | Sdp/All | 1,050 |
| B. Makinson | Sdp/All | 783 |
Aberavon North1 seat · turnout 51.1%
| M. Harris | Labour | 2,063 |
| L. Griffiths | RATE | 937 |
| J. Larsen | Sdp/All | 419 |
Aberavon South1 seat · turnout 41.3%
| W. Llewellyn | Labour | 1,183 |
| A. Taylor | Sdp/All | 641 |
Brynmelyn2 seats
| D. Macdonlald-Murray | Labour | 0 ✓ |
| J. Dowdle | Labour | 0 ✓ |
Fforest Fach2 seats · turnout 32.2%
| V. Alexander | Labour | 2,110 |
| D. Bevan | Labour | 2,061 |
| D. Latham | RES | 1,221 |
| G. Williams | RES | 1,196 |
| A. Williams | Plaid Cymru - The Party of Wales | 245 |
| J. Roberts | Plaid Cymru - The Party of Wales | 192 |
Ffynone2 seats · turnout 41.3%
| M. Ford | Lib/Sdp | 1,012 |
| S. Wakefield | Lib/Sdp | 1,000 |
| M. James | Conservative | 897 |
| M. Hoskins | Conservative | 892 |
| G. Carruthers | Labour | 771 |
| M. Hedges | Labour | 769 |
Glyncorrwg2 seats · turnout 46.5%
| T. Jones | Labour | 1,699 |
| R. Eckett | Labour | 1,180 |
| D. Daniel | Ind Lab | 1,068 |
| M. Goodridge | Independent | 872 |
Gower No.11 seat · turnout 48.8%
| J. Kelleher | Sdp/All | 1,028 |
| J. Vaughan | Conservative | 870 |
Gower No.21 seat · turnout 44.8%
| J. Stock | Labour | 1,450 |
| D. Elliot | Sdp/All | 996 |
Gower No.31 seat
| M. Smith | Independent | 0 ✓ |
Landore2 seats · turnout 26.8%
| D. Cox | Labour | 1,179 |
| N. Porter | Labour | 988 |
| J. Evans | Lib/All | 305 |
| M. Shrewsbury | Lib/All | 282 |
Llansamlet2 seats · turnout 21.6%
| L. Penhaligan | Labour | 2,548 |
| W. Davies | Labour | 2,407 |
| A. Boothroyd | Conservative | 467 |
| A. Thomas | Conservative | 375 |
Llwchwr No.11 seat
| G. Williams | Labour | 1,948 ✓ |
| B. Austin | Conservative | 358 |
Llwchwr No.22 seats · turnout 40.9%
| D. Davies | Labour | 2,369 ✓ |
| D. James | Labour | 2,122 ✓ |
| K. Thomas | Plaid Cymru - The Party of Wales | 1,668 |
Llwchwr No.32 seats · turnout 61.6%
| J. Turner | Labour | 1,714 ✓ |
| M. Thomas | Labour | 1,555 ✓ |
| W. Morgan | Independent | 1,402 |
| P. Davies | Conservative | 1,011 |
| B. Smith | SDP-Liberal Alliance | 810 |
| A. Morgan-Griffiths | Plaid Cymru - The Party of Wales | 610 |
Margam Central1 seat · turnout 50.1%
| J. Rogers | Labour | 1,642 |
| W. Rees | Lib/All | 334 |
Margam North1 seat · turnout 51.1%
| D. Southall | Labour | 735 |
| W. Charles | Independent | 561 |
Margam West1 seat · turnout 47.7%
| E. Miles | RATE | 1,079 |
| B. Davis | Labour | 743 |
Morriston2 seats · turnout 27.4%
| E. Adams | Labour | 2,474 |
| C. Moriarty | Labour | 2,386 |
| C. Bromham | Sdp/All | 1,382 |
| P. Bray | Conservative | 805 |
Mumbles2 seats · turnout 34.9%
| A. Chilcott | Conservative | 2,433 |
| W. Hughes | Conservative | 2,200 |
| R. Butler | Labour | 1,412 |
| T. Exton | Labour | 1,351 |
| S. Evans | Sdp/All | 1,120 |
Neath No.14 seats
| D. David | Labour | 0 ✓ |
| M. Pearson | Labour | 0 ✓ |
| F. Kingdom | Labour | 0 ✓ |
| D. Jeffs | Labour | 0 ✓ |
Neath No.22 seats · turnout 36.8%
| F. Evans | Labour | 2,174 ✓ |
| M. Jones | Labour | 2,062 ✓ |
| J. Lloyd | Conservative | 878 |
Neath Rural No.2 seats · turnout 77.4%
| R. Jones | Labour | 2,681 ✓ |
| N. Thomas | Labour | 2,482 ✓ |
| M. Thomas | Independent | 2,125 |
| D. Florance | Labour | 1,345 |
| H. Bevan | Labour | 1,165 |
| E. Walters | Plaid Cymru - The Party of Wales | 1,033 |
| T. Wilkins | Sdp/All | 961 |
| G. Morgan | COMM | 889 |
| R. King | Plaid Cymru - The Party of Wales | 867 |
| D. Davies | Sdp/All | 844 |
| P. James | Plaid Cymru - The Party of Wales | 407 |
| D. Thomas | Labour | 0 |
Neath Rural No. 51 seat
| D. Davies | Labour | 0 ✓ |
Penderry3 seats · turnout 29.8%
| T. Jones | Labour | 2,941 |
| J. Allison | Labour | 2,733 |
| G. Thomas | Labour | 2,724 |
| A. Clement | RES | 1,982 |
| K. Wright | Sdp/All | 1,849 |
| S. Watkins | RES | 1,741 |
Pontardawe No.11 seat
| A. Mumford | Labour | 1,216 ✓ |
| L. Powell | Sdp/All | 400 |
Pontardawe No.22 seats · turnout 61.3%
| B. Ford | Labour | 1,929 ✓ |
| J. Davies | Residents | 1,478 ✓ |
| T. Maunder | Labour | 1,218 |
| I. Richard | Independent | 853 |
| S. Mullins | SDP-Liberal Alliance | 775 |
Pontardawe No.33 seats · turnout 48.0%
| M. Morgan | Labour | 3,212 ✓ |
| S. Griffiths | Labour | 2,903 ✓ |
| S. Thomas | Labour | 2,551 ✓ |
| W. Evans | Plaid Cymru - The Party of Wales | 2,324 |
| A. Llewellyn | Plaid Cymru - The Party of Wales | 1,831 |
Sketty3 seats · turnout 38.0%
| S. Perry | Conservative | 3,368 |
| R. Massey-Shaw | Conservative | 3,271 |
| N. Evans | Conservative | 3,098 |
| V. Davies | Sdp/All | 2,174 |
| D. Paul | Sdp/All | 1,960 |
| J. Newbury | Sdp/All | 1,954 |
| C. Parker | Labour | 1,830 |
| S. Coghlin | Labour | 1,692 |
| V. Thomas | Labour | 1,666 |
St.Johns2 seats · turnout 50.0%
| A. Bozman | Sdp/All | 1,780 |
| C. Holley | Sdp/All | 1,709 |
| A. Morris | Labour | 1,053 |
| H. Tabram | Labour | 1,046 |
Townhill2 seats
| E. Miles | Labour | 0 ✓ |
| H. Sullivan | Labour | 0 ✓ |
