Before (end of 1978) (51 seats, Elections Centre)
Other 32 · Conservative 11 · Labour 7 · Plaid Cymru - The Party of Wales 1 · The Liberal Party 0
After (end of 1979) (51 seats, Elections Centre)
Labour 33 · Conservative 14 · Other 4 · The Liberal Party 0 · Plaid Cymru - The Party of Wales 0
Ward results
Ward 13 seats · turnout 69.7%
| L. Aldron | Labour | 2,264 |
| A. Hopkins | Labour | 2,178 |
| E. Jones | Labour | 1,035 |
| J. Sullivan | Independent | 947 |
| I. Hyde | Independent | 878 |
| M. Aldron | ALARM | 737 |
| P. Morgan | Conservative | 587 |
| J. Parry | Conservative | 582 |
| J. Harries | Plaid Cymru - The Party of Wales | 296 |
Ward 103 seats · turnout 68.3%
| C. Dilley | Conservative | 2,163 |
| R. Lewis | Conservative | 1,982 |
| D. Phillips | Conservative | 1,888 |
| B. Morris | Labour | 1,092 |
| D. Thomas | Labour | 987 |
| R. Godbeer-Williams | Labour | 986 |
| C. Clewett | Independent | 752 |
| P. Dutton | Plaid Cymru - The Party of Wales | 279 |
| L. John | Plaid Cymru - The Party of Wales | 243 |
Ward 113 seats · turnout 76.9%
| D. Lewis | Labour | 2,310 ✓ |
| O. Rees | Labour | 2,300 ✓ |
| P. Davies | Labour | 2,219 ✓ |
| W. John | Residents | 1,113 |
| P. Kiley | Residents | 965 |
| T. Jones | Conservative | 830 |
| B. Tovey | Conservative | 828 |
| J. Morris | Residents | 784 |
| L. Parry | Conservative | 718 |
Ward 123 seats · turnout 87.2%
| C. Thomas | Labour | 2,908 ✓ |
| G. Sparkes | Labour | 2,542 ✓ |
| W. Powell | Labour | 2,424 ✓ |
| A. Bunn | Residents | 1,181 |
| V. Davies | Residents | 1,161 |
| J. Trick | Residents | 974 |
| D. Thomas | Conservative | 383 |
| J. Green | Other | 347 |
| M. Cotton | Conservative | 340 |
Ward 133 seats · turnout 76.3%
| P. Williams | Conservative | 9,102 |
| R. Crimp | Conservative | 8,846 |
| C. Birss | Conservative | 8,229 |
| M. Hedges | Labour | 3,948 |
| J. Cainen | Labour | 3,808 |
| D. Roberts | Labour | 3,385 |
| G. Gwent Ap | Plaid Cymru - The Party of Wales | 1,773 |
Ward 143 seats · turnout 62.8%
| K. Hawkins | Labour | 3,326 ✓ |
| E. Lewis | Labour | 3,184 ✓ |
| R. Lloyd | Labour | 3,147 ✓ |
| C. Willoughby | Conservative | 795 |
| R. Fearon | Conservative | 785 |
| J. Thomas | Plaid Cymru - The Party of Wales | 354 |
| P. Dinwiddy | Plaid Cymru - The Party of Wales | 223 |
Ward 153 seats · turnout 86.8%
| Nell Davies-Small | Labour | 1,207 ✓ |
| J. France | Labour | 1,170 ✓ |
| C. Olson | Conservative | 1,111 ✓ |
| G. McFenton | Labour | 1,100 |
| D. Jenkins | IND RATE | 1,032 |
| C. Bowen | Conservative | 936 |
| P. Jenkins | IND RATE | 873 |
| J. Peters | Conservative | 860 |
| L. Graham | ALARM | 484 |
| D. Morton | Plaid Cymru - The Party of Wales | 211 |
Ward 161 seat
| J. Bartlett | Conservative | 0 ✓ |
Ward 182 seats · turnout 75.2%
| H. Morgan | RATE | 1,695 |
| D. Williams | Labour | 1,567 |
| D. Thomas | RATE | 1,508 |
| D. Coppin | Labour | 1,294 |
| W. Evans | Conservative | 658 |
| D. Arthur | Conservative | 562 |
Ward 23 seats · turnout 67.2%
| Ayres H.. | Labour | 1,944 ✓ |
| G. Peters | Labour | 1,662 ✓ |
| J. Jones | Labour | 1,656 ✓ |
| J. Holmes | Conservative | 529 |
| G. Thomas | Conservative | 517 |
| M. Struel | Conservative | 470 |
| I. Bone | ALARM | 271 |
| S. Percival | RATE | 269 |
| G. Hopkins | Independent | 267 |
Ward 201 seat · turnout 84.3%
| S. Jones | Independent | 603 |
| F. Richards | Conservative | 455 |
| J. Vernon | Independent | 152 |
Ward 33 seats · turnout 68.5%
| C. Hammacott | Labour | 4,463 ✓ |
| L. Hopkins | Labour | 4,085 ✓ |
| W. Dyer | Labour | 3,824 ✓ |
| C. Andrew | Conservative | 1,587 |
| E. Charles | Conservative | 1,568 |
| V. Davies | Conservative | 1,497 |
| L. Evans | RATE | 1,330 |
| G. Jones | RATE | 1,291 |
| H. Morgan | RATE | 1,020 |
| D. Williams | Plaid Cymru - The Party of Wales | 526 |
| A. Williams | Plaid Cymru - The Party of Wales | 466 |
| R. Williams | Plaid Cymru - The Party of Wales | 367 |
Ward 43 seats
| P. Valerio | Conservative | 2,765 ✓ |
| M. Murphy | Conservative | 2,676 ✓ |
| T. Morgan | Conservative | 2,585 ✓ |
| L. Martin | Labour | 1,422 |
| G. Burtonshaw | Labour | 1,196 |
| E. Miles | Labour | 1,188 |
| M. Shrewsbury | LIB | 1,023 |
| D. Thomas | Plaid Cymru - The Party of Wales | 384 |
| G. Robbins | Plaid Cymru - The Party of Wales | 304 |
Ward 53 seats
| R. Davies | Labour | 2,515 ✓ |
| Hilton T. | Labour | 2,320 ✓ |
| K. Williams | Labour | 2,274 ✓ |
| A Williams | Conservative | 804 |
| G. Davies | RES | 752 |
| Rees I. R | & R | 719 |
| Miller J. R | & R | 632 |
| G. Evans | Independent | 379 |
| W. Lewis | Plaid Cymru - The Party of Wales | 325 |
Ward 63 seats · turnout 85.9%
| M. Chilcott | Labour | 5,754 ✓ |
| G. Webber | Labour | 5,514 ✓ |
| Andy Osborne | Labour | 4,691 ✓ |
| J. Ball | Plaid Cymru - The Party of Wales | 3,967 |
| S. Holmes | Conservative | 1,665 |
| L. Thomas | Conservative | 1,625 |
| H. Watkins | Plaid Cymru - The Party of Wales | 1,158 |
| W. Smith | Plaid Cymru - The Party of Wales | 1,081 |
Ward 73 seats · turnout 70.8%
| D. Havard | Labour | 4,108 ✓ |
| P. Quick | Labour | 3,767 ✓ |
| E. Sinnett | Labour | 3,306 ✓ |
| Hadley C. R | & T | 2,342 |
| Greep C. R | & T | 2,165 |
| Williams D. R | & T | 1,618 |
| R. Morris | Conservative | 1,523 |
| J. Williams | Conservative | 1,445 |
| C. Reid | Plaid Cymru - The Party of Wales | 1,361 |
| P. Hill | Conservative | 1,267 |
| D. Harris | Plaid Cymru - The Party of Wales | 1,060 |
| A. Williams | Plaid Cymru - The Party of Wales | 895 |
Ward 83 seats · turnout 73.6%
| A. Chlcott | Conservative | 5,383 |
| E. Beynon | Conservative | 5,224 |
| G. Morgan | Conservative | 4,007 |
| C. Edwards | RATE | 3,001 |
| M. Williams | Labour | 2,870 |
| L. Neale | Labour | 2,642 |
| D. Thomas | Labour | 2,633 |
| O. Jones | Plaid Cymru - The Party of Wales | 416 |
Ward 93 seats · turnout 69.0%
| T. Burtonshaw | Labour | 6,950 ✓ |
| B. Owen | Labour | 6,465 ✓ |
| G. Phillips | Labour | 6,334 ✓ |
| B. Phillips | Ind RR | 2,377 |
| Pritchard L. R | & T | 1,948 |
| C. Edwards | Conservative | 1,601 |
| R. Thomas | Conservative | 1,346 |
| G. Williams | Conservative | 1,326 |
| Davies D. R | & T | 1,322 |
| Saunders A. R | & T | 1,134 |
| P. Freeman | Plaid Cymru - The Party of Wales | 861 |
| W. Jones | COMM | 653 |
| B. Lewis | COMM | 210 |
| R. Thomas | COMM | 170 |
