| Boston | The area formerly comprised in the division of Boston, except for the area of the parishes of Donington, Gosberton, Quadring and Surfleet, together with the area of the parishes of Carrington, Frithville, Langriville, Sibsey, Stickney, Thornton-le-Fen, Westville and West Fen |
| Bourne and Stamford | The area formerly comprised in the divisions of Bourne and Stamford |
| Elloes | The area formerly comprised in the divisions of East Elloe and West Elloe together with the area of the parishes of Donington, Gosberton, Quadring and Surfleet |
| Gainsborough | The area formerly comprised in the division of Gainsborough together with the area of the parishes of Bishop Norton, Brampton, Caenby, Cammeringham, Fenton, Fillingham, Glentham, Glentworth, Ingham, Kettlethorpe, Newton-on-Trent, Normanby-by-Spital, Owmby, Saxby, Spridlington, Stow, Sturton-by-Stow, Thorpe in the Fallows, Torksey and West Firsby |
| Grantham | The area formerly comprised in the division of Grantham together with the area of the parishes of Beckingham, Brant Broughton and Stragglethorpe, Leadenham, Stapleford and Welbourn |
| Lincoln District | The area formerly comprised in the divisions of: Lincoln (City) Lincoln (County), except for the area of the parishes of Beckingham, Benniworth, Bishop Norton, Brampton, Brant Broughton and Stragglethorpe, Burgh on Bain, Caenby, Cammeringham, Fenton, Fillingham, Glentham, Glentworth, Hainton, Hatton, Ingham, Kettlethorpe, Leadenham, Legsby, Newton-on-Trent, Normanby-by-Spital, Owmby, Saxby, Sixhills, Sotby, South Willingham, Spridlington, Stapleford, Stow, Sturton-by-Stow, Thorpe in the Fallows, Torksey, Tupholme, Welbourn and West Firsby, together with the area of the parishes of Blankney and Friesthorpe |
| Market Rasen | The area formerly comprised in the division of Market Rasen, except for the area of the parishes of Binbrook and Friesthorpe, together with the parishes of Legsby and Sixhills |
| Sleaford | The area formerly comprised in the division of Sleaford except for the area of the parish of Blankney |
| Spilsby and Skegness | The area formerly comprised in the division of Spilsby and Skegness, except for the area of the parishes of Carrington, Frithville, Sibsey, Stickney, Westville and West Fen |
| Wolds | The area formerly comprised in the divisions of: Horncastle, except for the area of the parishes of Langriville and Thornton-le-Fen Louth, together with the area of the parishes of Benniworth, Binbrook, Burgh on Bain, Hainton, Hatton, Sotby, South Willingham and Tupholme. |