| Hardar Limited | Information & communication | 2010 |
| Hardman Energy Services Limited | Professional & scientific | 2024 |
| Havell Trading Ltd | Wholesale & retail | 2022 |
| Hayes Gardenworld Limited | Administrative & support | 1981 |
| Hideaway Stay Ltd | Hospitality | 2025 |
| Highland Corporate UK Limited | Financial services | 2025 |
| HIT Computer Services Ltd | Professional & scientific | 2019 |
| Hive Property Surveys Limited | Professional & scientific | 2022 |
| Hollybank Offshore Safety Services Ltd | Education | 2013 |
| Homes 3 Limited | Real estate | 2004 |
| I & M Inspection Services Ltd | Professional & scientific | 2020 |
| Iain Gordon Engineering Limited | Professional & scientific | 2005 |
| IMP Care Ltd | Administrative & support | 2023 |
| Independent Access Ltd | Construction | 2022 |
| Infolution Software Ltd | Information & communication | 2014 |
| Infrastructure Commercial Services Ltd | Construction | 2016 |
| IOL Marketing Ltd | Professional & scientific | 2012 |
| J.A.R Access Ltd | Construction | 2018 |
| James Craik & Son(Whitehaugh)Limited | Agriculture & fishing | 1961 |
| James T. Murray & Sons Limited | Construction | 2014 |
| Jason M Allan Electrician Ltd | Construction | 2024 |
| Jasper Lawson Limited | Administrative & support | 2022 |
| JB Building Group Ltd | Construction | 2025 |
| Jensen Homes Limited | Real estate | 2006 |
| JG Plastering & Decorating Ltd | Construction | 2024 |
| JH Landscaping Ltd | Construction | 2019 |
| JL Property & Lettings Limited | Real estate | 2021 |
| John Spendluffe Technology College | Education | 2011 |
| Jonny Bananas Limited | Extraterritorial | 2012 |
| Jorandalls Real Estate Limited | Real estate | 2023 |
| Josh Dorey Music Ltd | Information & communication | 2023 |
| Justice Enterprises Ltd | Wholesale & retail | 2023 |
| JW Autoworx Ltd | Wholesale & retail | 2026 |
| K9DS and Protection Ltd | Administrative & support | 2021 |
| KDI Property Limited | Real estate | 2025 |
| Keith Mitchell Lifting Limited | Mining & quarrying | 2021 |
| Kelkit Pizza Ltd | Hospitality | 2019 |
| Kennett Electrical and Compliance Ltd | Construction | 2019 |
| KFB Engineering & Agricultural Ltd. | Professional & scientific | 2007 |
| Kildonnan Engineering Limited | Professional & scientific | 2017 |
| Kimberley Green With Love Limited | Wholesale & retail | 2017 |
| Kimmies Ltd | Wholesale & retail | 2019 |
| Kingsford Tutoring Ltd | Education | 2026 |
| KMS Railtech Ltd | Wholesale & retail | 2018 |
| Krma Ltd | Professional & scientific | 2025 |
| L & E Fowlie Electrical Limited | Construction | 2010 |
| L. J. Fairburn and SON (Holdings) Ltd | Extraterritorial | 2013 |
| L. J. Fairburn and SON (Properties) Ltd | Extraterritorial | 2013 |
| L.J. Fairburn and SON Limited | Agriculture & fishing | 1974 |
| Langley Homes Ltd | Construction | 2014 |
| LE Wolf Legal Services Limited | Professional & scientific | 2025 |
| Lempard Brickwork Contractors Ltd | Construction | 2025 |
| LFL Trading Ltd | Wholesale & retail | 2024 |
| Liam Dinnie Consulting Ltd | Professional & scientific | 2024 |
| LIN Delight Limited | Hospitality | 2024 |
| Lincolnshire Gliding Club Limited | Arts & recreation | 1996 |
| Lincolnshire Seaside Retreats Ltd | Real estate | 2024 |
| Lincs Coast Kitchens Ltd | Construction | 2021 |
| Lincs County Loos Ltd | Administrative & support | 2020 |
| Lincs Heavy Motor Parts Limited | Wholesale & retail | 2017 |
| Lincs Signs Ltd | Professional & scientific | 2021 |
| Lindale Property Limited | Financial services | 2024 |
| Littlewood Park Sporting Club LLP | | 2024 |
| Lodge Wood Ltd. | Hospitality | 2016 |
| Lsn-Games Ltd | Arts & recreation | 2022 |
| Lynturk Farm | | 1986 |
| M & E Robertson Ltd | Construction | 2009 |
| M F Buildings Limited | Construction | 2021 |
| M Watt Welding and Fabrication Ltd | Manufacturing | 2025 |
| M. a. Smith and Sons Limited | Construction | 2002 |
| M.Winlow Solutions Limited | Construction | 2026 |
| Macs (Huttoft) Limited | Agriculture & fishing | 2002 |
| Mahaalakshmee Ltd | Wholesale & retail | 2025 |
| Mains of Brux Farm Partnership | | 1998 |
| Marble Art Originals Ltd | Manufacturing | 2014 |
| Mareel Finance Ltd | Professional & scientific | 2022 |
| Mark Russell Contractors Ltd | Construction | 2013 |
| Marlin Agri Ltd | Agriculture & fishing | 2024 |
| Martin Begg Electrical Services Ltd | Construction | 2009 |
| MAX Fitness (Alford) Limited | Arts & recreation | 2023 |
| Maxbuild (Lincolnshire) Limited | Construction | 2002 |
| Mcdp 1 Ltd | Other services | 2018 |
| Medical Assessments Ltd | Health & social care | 2013 |
| Micky’S Own Limited | Wholesale & retail | 2024 |
| Minmore (MPS) Limited | Mining & quarrying | 2012 |
| Missonout Ltd | Arts & recreation | 2019 |
| Mk-Breakaway Limited | Hospitality | 2025 |
| MKM Slaters Limited | Construction | 2025 |
| ML Subsea Ltd | Professional & scientific | 2018 |
| MOHACS500 Ltd | Transport & logistics | 2026 |
| Moods Properties Ltd | Real estate | 2026 |
| Moray Way Ultras Ltd | Education | 2023 |
| Morven Veterinary Practice Limited | Professional & scientific | 2003 |
| Mototen Ltd | Wholesale & retail | 2025 |
| MU Made Music Limited | Information & communication | 2020 |
| My Eggs Ltd | Agriculture & fishing | 2026 |
| N a Wood Limited | Construction | 2003 |
| N R Burton Builders Limited | Construction | 2012 |
| Native Woodland Limited | Other services | 2002 |
| Nayeema (Alford) Limited | Hospitality | 2015 |