| Lincs Crystal Clean Ltd | Other services | 2014 |
| Lincs Doors Limited | Extraterritorial | 2017 |
| Lincs Eco Rend Ltd | Construction | 2019 |
| Lincs Electrical Services Limited | Construction | 2005 |
| Lincs Fabrication and Welding Ltd | Manufacturing | 2023 |
| Lincs Fire & Security Limited | Public administration | 2016 |
| Lincs Green Energy Limited | Construction | 2022 |
| Lincs Housing Limited | Real estate | 2012 |
| Lincs Inspire Limited | Arts & recreation | 2012 |
| Lincs Inspire Venues & Enterprises Limited | Arts & recreation | 2016 |
| Lincs Interiors Ltd | Construction | 2011 |
| Lincs Landlords Limited | Real estate | 2020 |
| Lincs Letting Limited | Real estate | 2008 |
| Lincs OIL Tanks Limited | Construction | 2016 |
| Lincs Plastering Ltd | Construction | 2021 |
| Lincs Property Holdings Ltd | Construction | 2026 |
| Lincs PVC Limited | Construction | 2020 |
| Lincs Render Systems Ltd | Construction | 2026 |
| Lincs Self Storage Solutions Ltd | Other services | 2025 |
| Lincs Smart Ltd | Manufacturing | 2018 |
| Lincs Table Ltd | Wholesale & retail | 2024 |
| Lincs VWA Services Limited | Wholesale & retail | 2010 |
| Lincs Weddings Ltd | Other services | 2022 |
| Lincs-Removals Limited | Transport & logistics | 2026 |
| Lincssmart Fleet Group Ltd | Administrative & support | 2019 |
| Lindis Park at Boston Management Company Limited | Professional & scientific | 2020 |
| Lindsey Driving School Limited | Extraterritorial | 2019 |
| Lindsey Garden Products Limited | Construction | 2012 |
| Lindsey Relay Co. (Brigg) Limited | Wholesale & retail | 1968 |
| Lindsey Tree Services Limited | Administrative & support | 2001 |
| Linfitt Construction and Maintenance Ltd | Construction | 2019 |
| Ling Inspection Services Limited | Professional & scientific | 2012 |
| Ling Properties (Grimsby) Limited | Real estate | 2022 |
| Lingua Communication Services Ltd. | Professional & scientific | 2018 |
| LINK2 Group Ltd | Administrative & support | 2022 |
| LINK2 Resource Limited | Administrative & support | 2017 |
| Linkspace Ltd | Real estate | 2025 |
| Linvex Limited | Construction | 2017 |
| Lion (Andy Williams) Limited | Wholesale & retail | 2017 |
| Lionheart Global Ltd | Professional & scientific | 2009 |
| Liquid Innovation & Creative Solutions LLP | | 2021 |
| Lisa Boileau Limited | Professional & scientific | 2012 |
| Lisa O'Donovan Limited | Other services | 2002 |
| Lisa's Alterations Limited | Wholesale & retail | 2002 |
| Lisa-Jane Howes Limited | Professional & scientific | 2012 |
| Lisal Homes Ltd | Construction | 2021 |
| Lisk Transport Ltd | Transport & logistics | 2022 |
| Lisle Marsden Childcare Limited | Education | 2011 |
| Lisle Marsden Church of England Primary Academy | Education | 2011 |
| Lisu Transport Ltd | Transport & logistics | 2021 |
| Lite IT Limited | Wholesale & retail | 2025 |
| Little April Showers Ltd | Professional & scientific | 2016 |
| Little Big Voice Limited | Information & communication | 2010 |
| Little Blossoms Day Nursery Limited | Education | 2018 |
| Little Blue Jafeica Ltd | Extraterritorial | 2023 |
| Little Oaks (Grimsby) Limited | Education | 2018 |
| Little Town Properties GY Ltd | Real estate | 2023 |
| Little Twinkles Childcare Ltd | Education | 2016 |
| Little Tykes Dog Hub Ltd | Agriculture & fishing | 2018 |
| Littlefield Properties Limited | Construction | 2018 |
| Liu's Catering Limited | Hospitality | 2022 |
| Livingstone Cares Ltd | Administrative & support | 2024 |
| Lizurelee Holdings Ltd | Financial services | 2021 |
| LJ Pickering Consultants Ltd | Professional & scientific | 2023 |
| LJF Limited | Professional & scientific | 2016 |
| LJM Deliveries Ltd | Transport & logistics | 2026 |
| LJM Safety Limited | Other services | 2017 |
| LJR Marine Marketing Ltd. | Wholesale & retail | 2018 |
| LL Pallets Limited | Other services | 2022 |
| Llewellyn Group Limited | Construction | 2019 |
| LMB Properties Grimsby Ltd | Real estate | 2019 |
| Lmbs Solutions Limited | Other services | 2023 |
| LMC Ainslie Co. Ltd | Other services | 2019 |
| LMC Heat Care Limited | Construction | 2018 |
| LMJ Drawing Services Limited | Professional & scientific | 2023 |
| LMJ MI Consultancy Ltd | Education | 2026 |
| LMK Scaffolding (Grimsby) Limited | Construction | 2016 |
| LN Care Ltd | Health & social care | 2017 |
| Lock IT Safe Limited | Manufacturing | 1993 |
| Lock Paper Escape Ltd | Arts & recreation | 2021 |
| Lockhill Limited | Hospitality | 2009 |
| Locum for YOU Ltd | Wholesale & retail | 2024 |
| Lofaro IT Services Ltd | Information & communication | 2012 |
| Logan Bespoke Homes Limited | Construction | 2019 |
| Logan Site Services Limited | Construction | 2015 |
| Logistica Ltd | Administrative & support | 2014 |
| Logolit Ltd | Other services | 2023 |
| Loico Properties Ltd | Real estate | 2020 |
| Loico Renovations Limited | Construction | 2022 |
| Loki Projects Limited | Administrative & support | 2016 |
| Lolite Homes Limited | Hospitality | 2018 |
| London BEL Canto Academy Limited | Arts & recreation | 2017 |
| London Media Vision Ltd | Information & communication | 2025 |
| Long Leys Investments Limited | Real estate | 1964 |
| Longclaw Limited | Manufacturing | 2026 |
| Looks Cosmetic and Laser Clinic Limited | Health & social care | 2006 |
| Lorraine Braben Consulting Ltd | Professional & scientific | 2016 |
| Lotka Haulage Ltd | Transport & logistics | 2020 |
| Lottie & Lola Ltd | Arts & recreation | 2013 |
| Louth Dog World Ltd | Agriculture & fishing | 2023 |