Before (end of 1998) (42 seats, Elections Centre)
Labour 32 · Liberal Democrats 7 · Conservative 2 · Other 1
After (end of 1999) (42 seats, Elections Centre)
Labour 22 · Conservative 11 · Liberal Democrats 5 · Other 4
Ward results
Croft Baker3 seats · turnout 27.5%
| A. Green | Labour | 1,368 |
| D. Bullivant | Labour | 1,266 |
| M. Morland | Labour | 1,160 |
| C. Eastwell | Liberal Democrats | 731 |
| T. Jones | Liberal Democrats | 703 |
| L. Pidgen | Liberal Democrats | 686 |
Freshney3 seats · turnout 25.0%
| J. King | Labour | 1,035 ✓ |
| S. Norton | Labour | 897 ✓ |
| P. Ramsden | Labour | 821 ✓ |
| S. Murray | Liberal Democrats | 625 |
| D. De Freitas | Liberal Democrats | 552 |
| M. Hardy | Conservative | 541 |
Haverstoe3 seats · turnout 32.1%
| K. Brookes | Conservative | 1,538 |
| M. Cracknell | Conservative | 1,475 |
| E. Parkinson | Conservative | 1,419 |
| P. Morris | Labour | 1,334 |
| C. Shaw | Labour | 1,191 |
| G. Pape | Labour | 1,182 |
Heneage3 seats
| Alan Burley | Labour | 1,050 ✓ |
| S. Labourne | Labour | 864 ✓ |
| G. Lowis | Labour | 816 ✓ |
| John Ferguson | Liberal Democrats | 722 |
| Stephen Hocknell | Liberal Democrats | 651 |
| Jessie Jagger | Liberal Democrats | 645 |
| Peter Heron | Conservative | 567 |
Humberston3 seats
| M Solomon | Independent | 1,590 ✓ |
| F. Riggall | Conservative | 1,311 ✓ |
| Mary O'Mahony | Conservative | 1,300 ✓ |
| L Cusse | Labour | 884 |
| R. Crampton | Labour | 814 |
| H Burns | Liberal Democrats | 680 |
| M Dewires | Liberal Democrats | 623 |
| M Marandi | Ind Lab | 527 |
Immingham3 seats
| M. Barrick | Labour | 1,623 ✓ |
| K Bradley | Labour | 1,481 ✓ |
| L Taylor | Labour | 1,312 ✓ |
| Mark Perrin | Conservative | 1,087 |
| J Johnson | Conservative | 1,055 |
| Ian David Mitchell | Liberal Democrats | 539 |
| Martin Stuart Jones | Liberal Democrats | 368 |
Marsh3 seats · turnout 25.9%
| P. Barker | Independent | 1,057 |
| J. Fenton | Independent | 970 |
| K. Watkin | Independent | 881 |
| C. Dixon | Labour | 840 |
| A. Bovill | Labour | 812 |
| F. Bovill | Labour | 732 |
North East3 seats · turnout 19.5%
| M Barker | Labour | 940 ✓ |
| K. Gallant-Wheatley | Labour | 816 ✓ |
| P Wheatley | Labour | 806 ✓ |
| S Beasant | Liberal Democrats | 346 |
| Ian Philip Barfield | Liberal Democrats | 315 |
| J McLuskie | Liberal Democrats | 293 |
| E Smart | Conservative | 136 |
Park (Cleethorpes)3 seats
| C Dalton | Labour | 1,047 ✓ |
| G Mitchell | Labour | 1,038 ✓ |
| Alex Wallace | Labour | 975 ✓ |
| Ann Sharratt | Conservative | 484 |
| F Wood | Conservative | 448 |
| Michael Drummond Moverley Smith | Conservative | 434 |
Park (Great Grimsby)3 seats
| Andrew de Freitas | Liberal Democrats | 2,018 ✓ |
| B. Haig | Liberal Democrats | 1,642 ✓ |
| M Thompson | Liberal Democrats | 1,466 ✓ |
| Gerard Calderbank | Conservative | 684 |
| G. Berrett | Conservative | 673 |
| Trevor Hutchinson | Labour | 533 |
| A Read | Labour | 444 |
| P White | Labour | 381 |
Scartho3 seats
| M Vickers | Conservative | 1,363 ✓ |
| M Rudkin | Conservative | 1,313 ✓ |
| Euan Hunter | Conservative | 1,143 ✓ |
| A Rouse | Labour | 1,027 |
| R Bailey | Labour | 964 |
| T Walker | Labour | 858 |
| L Cornell | Liberal Democrats | 484 |
South3 seats · turnout 22.5%
| K. Townsend | Labour | 917 |
| Norma Lincoln | Labour | 916 |
| P. Vessey | Labour | 865 |
| D. Baldwin | Independent | 851 |
| J. Stockton | Independent | 841 |
| M. Atkin | Independent | 830 |
Wold Parishes3 seats
| H Dickerson | Conservative | 1,424 ✓ |
| P. Mills | Conservative | 1,394 ✓ |
| D. Hazleton | Conservative | 1,228 ✓ |
| A Dewires | Liberal Democrats | 1,149 |
| P Tissington | Liberal Democrats | 1,048 |
| R Axcell | Labour | 1,047 |
| G Smith | Liberal Democrats | 865 |
| A. Cowood | Labour | 822 |
| Janet Mager | Labour | 806 |
Yarborough3 seats · turnout 20.6%
| J. Tattersdale | Liberal Democrats | 1,133 |
| M. Burnett | Labour | 1,132 |
| S. Stead | Liberal Democrats | 1,016 |
| C. Dyer | Liberal Democrats | 992 |
| M. Taylor | Labour | 945 |
| S. Wakefield | Labour | 870 |