| Link-Pave Ltd | Construction | 2015 |
| Links Driver Supply Ltd | Administrative & support | 2025 |
| Links Services Ltd | Extraterritorial | 2024 |
| Linkwave Technologies Limited | Wholesale & retail | 1998 |
| Linwave Technology Limited | Manufacturing | 2002 |
| Linx Property Ltd | Real estate | 2026 |
| Linx Roofing Limited | Construction | 2017 |
| Linzro General Trading Ltd Ltd | Wholesale & retail | 2025 |
| Linzwood Properties Ltd | Households | 2025 |
| Lipsm Limited | Other services | 1995 |
| Lisa Kellett Ltd | Professional & scientific | 2023 |
| Lisa Nails Lincoln Ltd | Other services | 2025 |
| Lisa Pocock Travel Limited | Administrative & support | 2026 |
| Listening 2 U Limited | Health & social care | 2012 |
| Listening 2 U Training Ltd | Education | 2024 |
| Listers Building Contractors (Lincoln) Limited | Construction | 2015 |
| Listers Timber & Builders Merchants Ltd | Manufacturing | 2002 |
| Listings International Limited | Extraterritorial | 2013 |
| Litora Ltd | Professional & scientific | 2019 |
| Little Bars and Pubs Limited | Hospitality | 2025 |
| Little Farm Shop Lincoln Ltd | Wholesale & retail | 2023 |
| Little Farmers Fashion Ltd | Wholesale & retail | 2025 |
| Little Jules Ltd | Other services | 2019 |
| Little Lime Limited | Financial services | 2026 |
| Little Lincoln Ltd | Arts & recreation | 2022 |
| Little ME Lincoln Ltd | Wholesale & retail | 2026 |
| Little Puddings Nursery Limited | Education | 2011 |
| Livaulta Ltd | Information & communication | 2025 |
| Live Like Loyalty Limited | Other services | 2019 |
| Lived Beliefs Ltd | Information & communication | 2024 |
| Livepro Ltd | Administrative & support | 2023 |
| LIZ Lean PR Limited | Administrative & support | 2003 |
| Lizi Lingerie Ltd | Manufacturing | 2023 |
| LJ Physio Limited | Health & social care | 2025 |
| Ljk.Cars Ltd | Wholesale & retail | 2023 |
| LJM Homecare Ltd | Health & social care | 2010 |
| Ljmp Holdings Ltd | Arts & recreation | 2025 |
| Ljzt Limited | Administrative & support | 2020 |
| LK2 Architects Ltd | Professional & scientific | 2012 |
| LK2 Holdings Ltd | Financial services | 2017 |
| LK2 Sport & Leisure Ltd | Professional & scientific | 2014 |
| LKD Build Ltd | Construction | 2025 |
| LKR Consulting Ltd | Professional & scientific | 2025 |
| LKW GmbH Couriers Ltd | Transport & logistics | 2017 |
| LL Developments (Lincoln) Limited | Construction | 2018 |
| LLC HDD Management Limited | Construction | 2024 |
| LLC Performance Limited | Wholesale & retail | 2016 |
| LLV Holdings Limited | Financial services | 2023 |
| LM Medical Aesthetics Ltd | Other services | 2024 |
| LM Plant Hire Ltd | Construction | 2023 |
| Lmcr (Lincs Motorhome and Commercial Repair) Ltd | Financial services | 2024 |
| LMD Groundworks Ltd | Construction | 2026 |
| LMG Taverns Ltd | Hospitality | 2026 |
| LMS Consultancy Limited | Professional & scientific | 2024 |
| LN Clothing Ltd | Wholesale & retail | 2024 |
| LN Property Developments Ltd | Construction | 2019 |
| LN Property Rental Ltd | Real estate | 2025 |
| LN Retail Ltd | Wholesale & retail | 2023 |
| LN Systems Limited | Information & communication | 2005 |
| Ln-Madina Foods Store Limited | Wholesale & retail | 2019 |
| LN1 Ltd | Professional & scientific | 2013 |
| LN13 Homes Ltd | Construction | 2024 |
| LN5 Estates Limited | Real estate | 2005 |
| LN6 Developments. Ltd | Construction | 2026 |
| LN6 Investments Ltd. | Real estate | 2017 |
| LN6 Plastering Ltd | Construction | 2018 |
| LN9 Properties (Wesley Way) Ltd | Construction | 2024 |
| LN9 Properties Ltd | Construction | 2024 |
| LNG Electrical Services Limited | Construction | 2017 |
| Lnic Lettings Ltd | Real estate | 2026 |
| Loaded Feast Limited | Hospitality | 2025 |
| Lockforce (North Nottinghamshire) Ltd | Other services | 2019 |
| Lockwood Estates Limited | Agriculture & fishing | 1974 |
| Lockxpress Glazing Ltd | Construction | 2023 |
| Locus ELM Press Limited | Information & communication | 2015 |
| Lodge Lane Developments Ltd | Construction | 2016 |
| Lodge Lane Management (Nettleham) Limited | Households | 2017 |
| Lodge Properties (Lincoln) Limited | Real estate | 1939 |
| Lofted Experiences Ltd | Administrative & support | 2025 |
| Logan Holdings (Lincoln) Limited | Financial services | 2023 |
| LOGS2BUY Limited | Manufacturing | 2014 |
| Lois Business Solutions Ltd | Professional & scientific | 2024 |
| Loizidou-Sandu Ltd | Health & social care | 2026 |
| Loler ARB Ltd | Extraterritorial | 2017 |
| Lolly Aesthetics Limited | Health & social care | 2025 |
| Lomas Architecture Design & Developments Limited | Professional & scientific | 2018 |
| Lomax Automotive Limited | Wholesale & retail | 2020 |
| London & Lincoln Properties Limited | Real estate | 1999 |
| London and County Surveyors Ltd | Construction | 2016 |
| London Auctions Share Holdings Limited | Financial services | 2024 |
| London Brick Restoration Specialists Ltd | Administrative & support | 2019 |
| London Cardiology Group Limited | Health & social care | 2016 |
| London Chest Centre LLP | | 2017 |
| London Children's Orthopaedics Ltd | Health & social care | 2011 |
| London Colorectal Specialists LLP | | 2017 |
| London Fashion Industry Limited | Manufacturing | 2004 |
| London Haemato-Oncology Ltd | Health & social care | 2009 |
| London Hand Specialists Ltd | Health & social care | 2024 |
| London Infection Associates LLP | | 2018 |
| London Medical Partners Ltd | Health & social care | 2022 |