Before (end of 1975) (48 seats, Elections Centre)
Labour 29 · The Liberal Party 12 · Conservative 5 · Other 2
After (end of 1976) (48 seats, Elections Centre)
Labour 23 · Other 16 · Conservative 6 · The Liberal Party 3
Ward results
No. 1 (Blyth: Croft)5 seats
| R Mordue | ILP | 1,290 |
| M Macdonald | ILP | 1,190 |
| L Cobb | ILP | 990 |
| H Shepherd | ILP | 972 |
| J Rennison | ILP | 820 |
| D Miller | ILP | 711 ✓ |
| D Mordue | ILP | 672 ✓ |
| J Donohoe | Labour | 660 ✓ |
| C Brown | ILP | 654 ✓ |
| E Tolhurst | Labour | 615 |
| R Campbell | Labour | 612 ✓ |
| D Mackin | LIB | 592 |
| G Haggerty | Labour | 567 |
| K Beaden | ILP | 564 |
| D Lees | Labour | 550 |
| T Smith | Independent | 528 |
| J Dawson | LIB | 517 |
| E Breadin | Labour | 472 |
| D Potts | Labour | 457 |
| Peter John Long | Labour | 456 |
| M Watts | Labour | 441 |
| George Cairns | Labour | 406 |
| J Craig | Ind Lab | 302 |
| M McClean | Ind Lab | 236 |
| J Cavagin | Ind Lab | 220 |
| R Watson | Ind Lab | 189 |
| I Cavagin | Ind Lab | 166 |
No. 2 (Blyth: Bebside) (E.P. 24.6.76)5 seats · turnout 43.9%
| R. Mordue | Other | 1,290 ✓ |
| M. Macdonald | Other | 1,190 ✓ |
| L. Cobb | Other | 990 ✓ |
| H. Shepherd | Other | 972 ✓ |
| J. Rennison | Other | 820 ✓ |
| E. Tolhurst | Labour | 615 |
| G. Haggerty | Labour | 567 |
| D. Lees | Labour | 550 |
| T. Smith | Independent | 528 |
| D. Potts | Labour | 457 |
| M. Watts | Labour | 441 |
| J. Craig | Other | 302 |
| M. McClean | Other | 236 |
| J. Cavagin | Other | 220 |
| R. Watson | Other | 189 |
| I. Cavagin | Other | 166 |
No. 3 (Blyth: Plessey)5 seats
| E. Howes | Labour | 0 ✓ |
| R. Milburn | Labour | 0 ✓ |
| N. Batchelor | Labour | 0 ✓ |
| A. Hancock | Labour | 0 ✓ |
| G. Barker | Labour | 0 ✓ |
No. 4 (Blyth: Ridley)6 seats
| P Bassett | Conservative | 1,276 ✓ |
| F Dixon | Conservative | 1,222 ✓ |
| J Tate | Conservative | 1,220 ✓ |
| M McGilvray | Conservative | 1,138 ✓ |
| V Crosby | Conservative | 1,132 ✓ |
| John Robert McNeil | Conservative | 1,072 ✓ |
| R Lloyd | LIB | 969 |
| I Tompkins | LIB | 960 |
| L Colbeck | LIB | 933 |
| K Gallon | Independent | 924 |
| T Shields | LIB | 911 |
| N Stephenson | LIB | 888 |
| J Phillips | Labour | 664 |
| E Wilkinson | Labour | 615 |
No. 5 (Blyth: Waterloo)6 seats
| Tessa Tyler Todd | Labour | 1,423 |
| J Chandler | Labour | 1,351 |
| W Yellowley | ILP | 1,318 ✓ |
| M. Brown | Labour | 1,309 |
| J Nicholson | LIB | 1,299 |
| S Metcalf | Labour | 1,273 |
| B Stott | Labour | 1,234 |
| A Duffell | LIB | 1,164 |
| P Penfold | LIB | 1,148 |
| A Robinson | LIB | 1,135 |
| B Southern | LIB | 1,091 |
| I Shepherd | ILP | 901 ✓ |
| E Towers | ILP | 881 ✓ |
| N Smith | ILP | 876 ✓ |
| G Duff | ILP | 873 ✓ |
| R Routledge | LIB | 870 ✓ |
| A Routledge | LIB | 829 |
| D Christion | ILP | 806 |
| P Stephenson | LIB | 800 |
| G Jackson | LIB | 798 |
| J Handley | Conservative | 740 |
| B Bassett | Conservative | 706 |
| D Afendoulis | LIB | 657 |
| D Potts | Labour | 638 |
| I Ince | Labour | 628 |
| D Roberts | Labour | 585 |
| B Thompson | Labour | 517 |
| R Jenkins | Labour | 474 |
| M French | Labour | 462 |
| F Arkwright | Independent | 312 |
No. 6 (Cramlington West & Hartford)6 seats · turnout 41.9%
| T. Todd | Labour | 1,423 ✓ |
| J. Chandler | Labour | 1,351 ✓ |
| M. Brown | Labour | 1,309 ✓ |
| J. Nicholson | The Liberal Party | 1,299 ✓ |
| S. Metcalf | Labour | 1,273 ✓ |
| B. Stott | Labour | 1,234 ✓ |
| A. Duffell | The Liberal Party | 1,164 |
| P. Penfold | The Liberal Party | 1,148 |
| A. Robinson | The Liberal Party | 1,135 |
| B. Southern | The Liberal Party | 1,091 |
| J. Handley | Conservative | 740 |
| F. Arkwright | Independent | 312 |
No. 7 (Cramlington East)6 seats · turnout 35.3%
| I. Gordon | Labour | 1,555 |
| A. Hutchinson | Labour | 1,390 |
| J. Bradshaw | Labour | 1,367 |
| N. Hughes | Labour | 1,356 |
| O. Ritson | Labour | 1,342 |
| R Lee | Labour | 1,320 |
| B. Charlton | LIB | 1,250 |
| V. Collins | LIB | 1,191 |
| K. Dawson | LIB | 1,183 |
| B. Dunn | LIB | 1,172 |
| R. Thompson | LIB | 1,165 |
| M. Murrell | LIB | 1,157 |
No. 8 (Seaton Delaval)8 seats · turnout 24.2%
| E. Milne | ILP | 2,835 |
| J. McManus | ILP | 2,256 |
| J. Patterson | Labour | 1,925 |
| L. Larmouth | ILP | 1,755 |
| J. Clough | Labour | 1,567 |
| L. Henderson | Labour | 1,343 |
| G. Adams | Labour | 1,224 |
| A. Young | Labour | 1,211 |
| J. Collier | Labour | 1,144 |
| D. Gascoigne | Labour | 1,121 |
| I. Cooper | LIB | 1,087 |
| J. Gunn | LIB | 1,031 |
| C. Dawson | LIB | 902 |
| J. Lyall | LIB | 833 |
| A. Romer | LIB | 821 |
No. 9 (Hartley)2 seats · turnout 63.0%
| E. Black | Labour | 493 |
| J. Romer | LIB | 492 |
| B. Burt | Labour | 491 |
| A. Kennedy | LIB | 429 |
