1997-2010: i ward del distretto di East Lindsey di Alford, Chapel St Leonards, Coningsby, Donington on Bain, Fotherby, Grimoldby, Halton Holegate, Hogsthorpe, Holton le Clay, Horncastle, Hundleby, Legbourne, Mablethorpe, Mareham le Fen, Marshchapel, New Leake, North Holme, North Somercotes, North Thoresby, Partney, Priory, Roughton, St James', St Margaret's, St Mary's, St Michael's, Spilsby, Sutton and Trusthorpe, Tattershall, Tetford, Tetney, Theddlethorpe St Helen, Trinity, Willoughby with Sloothby, Withern with Stain e Woodhall Spa.
2010-2024: i ward del distretto di East Lindsey di Alford, Binbrook, Chapel St Leonards, Coningsby and Tattershall, Grimoldby, Halton Holegate, Holton le Clay, Horncastle, Hundleby, Legbourne, Ludford, Mablethorpe Central, Mablethorpe East, Mablethorpe North, Mareham le Fen, Marshchapel, North Holme, North Somercotes, North Thoresby, Priory, Roughton, St James’, St Margaret’s, St Mary’s, St Michael’s, Skidbrooke with Saltfleet Haven, Spilsby, Sutton on Sea North, Sutton on Sea South, Tetford, Tetney, Trinity, Trusthorpe and Mablethorpe South, Willoughby with Sloothby, Withern with Stain e Woodhall Spa.
dal 2024: i ward del distretto di East Lindsey di Alford; Binbrook; Coningsby and Mareham; Fulstow; Grimoldby; Hagworthingham; Halton Holegate; Holton-le-Clay & North Thoresby; Horncastle; Legbourne; Mablethorpe; Marshchapel and Somercotes; North Holme; Priory & St. James’; Roughton; St. Margaret’s; St. Mary’s; St. Michael’s; Spilsby; Sutton on Sea; Tetford and Donington; Tetney; Trinity; Withern and Theddlethorpe; Woodhall Spa e Wragby.[1]
Storia dei confini
Dal 1885 al 1983 Louth e Horncastle esistettero separatamente come collegi elettorali; nel 1983 Horncastle fu spostato nel nuovo Gainsborough and Horncastle, mentre Louth fu inglobato nel nuovo East Lindsey. I confini rimasero gli stessi fino al 1997, quando fu costituito l'attuale collegio di Louth and Horncastle.