Before (end of 1984) (80 seats, Elections Centre)
Labour 41 · Conservative 35 · SDP-Liberal Alliance 3 · Plaid Cymru - The Party of Wales 1 · Other 0
After (end of 1985) (62 seats, Elections Centre)
Labour 34 · Conservative 18 · SDP-Liberal Alliance 9 · Plaid Cymru - The Party of Wales 1 · Other 0
Ward results
Adamsdown1 seat · turnout 34.3%
| K. Hutchings | Labour | 1,085 ✓ |
| W. Hutton | Conservative | 346 |
| P. Callahan | SDP | 304 |
| J. Chamber | Plaid Cymru - The Party of Wales | 82 |
Baruc1 seat · turnout 46.7%
| E. Jones | Conservative | 999 |
| D. Evans | Labour | 564 |
| W. Barritt | LIB | 468 |
Butetown1 seat · turnout 42.9%
| W. Kitson | Labour | 765 |
| E. Williams | Conservative | 179 |
Buttrills1 seat · turnout 45.7%
| B. Lane | Labour | 1,002 |
| J. Connell | Conservative | 527 |
| D. Bond | SDP | 380 |
Cadoc1 seat · turnout 37.4%
| S. James | Labour | 1,277 |
| D. Witchurch | Conservative | 797 |
Canton1 seat · turnout 46.3%
| R. Goodway | Labour | 951 |
| T. Tyrrell | Conservative | 898 |
| A. Scadden | SDP | 340 |
Castleland1 seat · turnout 42.9%
| M. Sharp | Labour | 969 |
| D. Whitehouse | Conservative | 291 |
Central1 seat · turnout 38.0%
| F. Hornblower | LIB | 696 |
| H. Rhoden | Labour | 616 |
| W. Palmer | Conservative | 290 |
Cornerswell1 seat · turnout 50.2%
| E. Tincknell | Labour | 1,013 ✓ |
| S. Thomas | Conservative | 974 |
| A. Redford | LIB | 557 |
| R. Thomas | Plaid Cymru - The Party of Wales | 423 |
Court1 seat · turnout 47.0%
| M. Anthoniw | Labour | 1,179 ✓ |
| T. Bowen | Conservative | 357 |
| M. Bond | SDP | 227 |
| R. Hughes | Plaid Cymru - The Party of Wales | 46 |
Cyncoed Village1 seat · turnout 62.0%
| D. Hill | LIB | 1,524 |
| C. Peterson | Conservative | 1,020 |
| D. Popper | Labour | 124 |
Cyntwell1 seat
| B. Phillips | Labour | 859 ✓ |
| F. McAndrews | Conservative | 227 |
| J. Hillard | SDP | 175 |
Deri1 seat · turnout 50.9%
| M. Davies | Conservative | 1,148 |
| G. Hallett | SDP | 754 |
| W. Davies | Labour | 408 |
Dinas Powys North1 seat · turnout 55.8%
| C. Franks | Plaid Cymru - The Party of Wales | 1,265 ✓ |
| B. McParlin | Conservative | 1,001 |
| G. Price | Labour | 319 |
| J. Brooks | SDP | 234 |
Dinas Powys South1 seat
| A. Hill | Conservative | 1,011 ✓ |
| R. Reeves | Plaid Cymru - The Party of Wales | 601 |
| M. James | SDP | 435 |
| S. Collins | Labour | 407 |
Dyfan1 seat · turnout 43.6%
| C. Watkins | Labour | 992 |
| J. Donovan | Conservative | 779 |
Eglwys Wen1 seat · turnout 55.6%
| W. Richards | Conservative | 1,147 ✓ |
| D. Hutchinson | Labour | 1,137 |
| B. Jenkins | SDP | 918 |
| A. Jobbins | Plaid Cymru - The Party of Wales | 111 |
Fairwater1 seat · turnout 42.9%
| D. Longdon | Labour | 1,161 |
| B. Hall | Conservative | 731 |
| C. Colmar | SDP | 388 |
Gabalfa1 seat · turnout 51.2%
| D. Campell | Labour | 1,243 |
| A. Llywellyn | LIB | 607 |
| D. Williams | Conservative | 501 |
Gibbonsdown1 seat · turnout 40.4%
| B. Murray | Labour | 1,058 |
| D. Roberts | Conservative | 280 |
| D. Smith | SDP | 231 |
Glan Ely1 seat · turnout 34.1%
| R. Morgan | Labour | 1,375 |
| I. Sadler | SDP | 276 |
| D. Gillard | Conservative | 243 |
Heath Park1 seat · turnout 40.3%
| J. Cronin | Conservative | 1,088 |
| E. Fitzgerald-Kuhl | SDP | 645 |
| P. Hampleton | Labour | 421 |
Highmead1 seat · turnout 36.7%
| H. Gough | Labour | 1,328 |
| H. Derrick | Conservative | 359 |
| M. Arcos | SDP | 258 |
Illtyd1 seat · turnout 41.3%
| E. Williams | Conservative | 1,254 |
| C. Short | Labour | 1,111 |
Lakeside1 seat · turnout 61.6%
| A. Jeremy | SDP | 1,651 ✓ |
| P. Meyer | Conservative | 901 |
| M. Parkinson | Labour | 216 |
| K. Shore | Plaid Cymru - The Party of Wales | 51 |
Landsdowne1 seat · turnout 47.6%
| M. Trickey | Labour | 1,254 ✓ |
| A. Brown | Conservative | 963 |
| A. Wigley | LIB | 477 |
| D. Burns | Plaid Cymru - The Party of Wales | 66 |
| W. Turner | Independent | 41 |
Lisvane With St.Mellons1 seat · turnout 33.9%
| J. Lysaght | Conservative | 907 |
| P. Ronson | SDP | 458 |
| P. Creswick | Labour | 217 |
Llandaff1 seat · turnout 41.3%
| J. Hermer | Conservative | 1,346 ✓ |
| W. Slack | SDP | 768 |
| O. Lydiard | Labour | 412 |
| G. Jones | Plaid Cymru - The Party of Wales | 239 |
Llandaff North1 seat · turnout 43.0%
| A. A'Hearne | Labour | 1,574 ✓ |
| J. Donovan | Conservative | 542 |
| E. Richards | LIB | 458 |
| R. Rendell | Independent | 72 |
Llanedeyrn1 seat · turnout 37.8%
| V. Jones | LIB | 1,375 ✓ |
| R. Longsworth | Labour | 674 |
| C. Tudor | Conservative | 396 |
| A. Morgan | Plaid Cymru - The Party of Wales | 85 |
Llanrumney North1 seat · turnout 38.5%
| P. Jarvis | Labour | 1,429 |
| T. Harvie | Conservative | 367 |
Llanrumney South1 seat · turnout 49.6%
| D. Francis | Labour | 1,139 |
| E. Morgan | SDP | 819 |
| S. Woods | Conservative | 430 |
Mackintosh1 seat · turnout 51.0%
| J. Morgan | Labour | 1,024 ✓ |
| G. Harris | LIB | 1,009 |
| S. James | Conservative | 611 |
| R. Bevan | Plaid Cymru - The Party of Wales | 61 |
| R. Spencer | COMM | 23 |
Maindy1 seat · turnout 52.5%
| D. Rees | LIB | 1,395 ✓ |
| M. Harris | Labour | 974 |
| A. Dixon | Conservative | 439 |
| G. Powell | Plaid Cymru - The Party of Wales | 84 |
N.Whitchurch With Tongwynlais1 seat · turnout 49.1%
| R. Evans | Conservative | 1,164 ✓ |
| T. Crews | Labour | 896 |
| J. May | SDP | 619 |
| J. Dunstan | Plaid Cymru - The Party of Wales | 102 |
Pantllacca1 seat · turnout 40.6%
| A. Thomas | LIB | 1,123 |
| M. Phelps | Labour | 482 |
| M. Wigmore | Conservative | 454 |
Pantmawr1 seat · turnout 52.3%
| J. Neale | Conservative | 1,367 ✓ |
| H. Howell | SDP | 821 |
| I. Faroogi | Labour | 347 |
| L. Evans | Plaid Cymru - The Party of Wales | 132 |
Park1 seat · turnout 34.9%
| R. Austin | Labour | 900 ✓ |
| O. Watkin | Conservative | 813 |
| A. Powell | LIB | 563 |
| S. Caiach | Plaid Cymru - The Party of Wales | 71 |
| S. Jones | COMM | 25 |
Pentre Bane1 seat · turnout 42.4%
| C. Roderick | Labour | 1,065 ✓ |
| D. Griffin | SDP | 694 |
| T. Canfield | Conservative | 328 |
| C. Henri | Plaid Cymru - The Party of Wales | 46 |
Plymouth1 seat · turnout 49.0%
| P. Lloyd | Conservative | 1,128 |
| P. Dresser | LIB | 573 |
| L. Barrett | Labour | 410 |
Pontcanna1 seat · turnout 46.8%
| M. Drakeford | Labour | 1,122 ✓ |
| J. Hallinan | Conservative | 721 |
| A. Evans | SDP | 186 |
| N. Hodges | Plaid Cymru - The Party of Wales | 129 |
| S. Scanlon | Independent | 105 |
Radyr With St.Fagans1 seat · turnout 61.4%
| M. Drake | SDP | 1,191 |
| W. Clarke | Conservative | 968 |
| P. Gunn | Labour | 243 |
Rhosse With Llancarfan1 seat · turnout 59.6%
| H. James | Conservative | 860 ✓ |
| P. Morris | SDP | 642 |
| J. Dole | Labour | 630 |
| K. Bowles | Independent | 205 |
Riverside South1 seat · turnout 43.3%
| J. Hutt | Labour | 1,292 |
| D. Mutton | Conservative | 357 |
| J. Bayley | SDP | 190 |
Saltmead1 seat · turnout 46.8%
| D. Richards | Labour | 1,338 |
| L. Quinn | Conservative | 891 |
St.Athan With Boverton1 seat · turnout 34.0%
| J. George | Conservative | 679 |
| M. Pember | Labour | 573 |
| E. Owen | SDP | 410 |
St.Augustines1 seat · turnout 44.8%
| P. Gray | Labour | 804 |
| S. Greensmith | LIB | 609 |
| J. Robinson | Conservative | 595 |
Stanwell1 seat · turnout 57.0%
| I. Dewar | Labour | 611 ✓ |
| J. Flanigan | Conservative | 575 |
| D. Haswell | Plaid Cymru - The Party of Wales | 404 |
| E. Humphreys | LIB | 139 |
The Marl1 seat · turnout 39.8%
| P. Perkins | Labour | 1,007 |
| J. Turnbull | Conservative | 567 |
| M. Ryan | Plaid Cymru - The Party of Wales | 70 |
Thornhill1 seat · turnout 44.0%
| T. Fitzgerald-Kuhl | SDP | 1,121 |
| R. Highes | Labour | 1,093 |
| V. Kempton | Conservative | 692 |
Ton-Yr-Ywen1 seat · turnout 45.8%
| B. Rees | Conservative | 977 |
| E. Chamberlain | SDP | 531 |
| E. Scheeres | Labour | 447 |
Trelai1 seat · turnout 39.8%
| E. Currie-Jones | Labour | 755 ✓ |
| J. Gasson | SDP | 545 |
| A. Renwick | Conservative | 192 |
| G. Jones | Independent | 77 |
Tremorfa1 seat · turnout 44.3%
| G. Houlston | Labour | 1,119 |
| A. Kelly | Conservative | 170 |
Trowbridge1 seat · turnout 27.7%
| W. Bowen | Labour | 1,605 |
| G. Lowder | Conservative | 455 |
Vale Of Glamorgan North East1 seat · turnout 48.9%
| M. Edmonds | Conservative | 953 ✓ |
| P. Sainleyberry | SDP | 556 |
| C. Collines | Labour | 236 |
| H. Prichard-Jones | Plaid Cymru - The Party of Wales | 85 |
Vale Of Glamorgan South West1 seat · turnout 47.9%
| L. Hughes | Labour | 1,266 |
| R. Morrish | Conservative | 653 |
| D. Britton | SDP | 313 |
Waterloo1 seat · turnout 53.2%
| L. Kelloway | LIB | 1,132 ✓ |
| A. Pithouse | Labour | 627 |
| R. Richard | Conservative | 587 |
| B. Smith | Plaid Cymru - The Party of Wales | 44 |
