| Lilliput External Cleaning Limited | Administrative & support | 2017 |
| Lilliput Health Limited | Health & social care | 2008 |
| Lilliput Projects Ltd | Construction | 2025 |
| Lillywhite Carter Limited | Financial services | 2010 |
| Lillywhite Carter Trustees Limited | Other services | 2021 |
| Lilybrush Ltd | Wholesale & retail | 2025 |
| Lima-Thompson Consulting Group Limited | Administrative & support | 2022 |
| Lime Estates (UK) Ltd | Other services | 2014 |
| Lime Estates Development Holdings Limited | Real estate | 2017 |
| Lime Estates Investment Holdings Ltd | Real estate | 2016 |
| Lime Estates Maple Holdings Ltd | Real estate | 2024 |
| Lime Estates Property Holdings Ltd | Real estate | 2016 |
| Lime Estates Rental Holdings Ltd | Real estate | 2022 |
| Lime Flooring Ltd | Construction | 2022 |
| Limestone Hotel Limited | Hospitality | 2021 |
| Limited Space Holdings Limited | Financial services | 2015 |
| Limitedspace Limited | Professional & scientific | 2003 |
| Limitless Hygiene Group Ltd | Water & waste | 2025 |
| Limitless Payroll Ltd | Professional & scientific | 2022 |
| Linacle Ltd | Information & communication | 2016 |
| Linakter Limited | Wholesale & retail | 2025 |
| Linco Global Ltd | Information & communication | 2010 |
| Lincoln Cliff Ltd | Financial services | 2015 |
| Lincoln Place Management Company Limited | Households | 1995 |
| Lindsay Impett Major Event Consulting (Lime) Ltd | Professional & scientific | 2026 |
| Lindsay Park Management Limited | Households | 2006 |
| Lindsay Park Residents Association Limited | Households | 1960 |
| Lindsays Building Services Limited | Construction | 2012 |
| Linear Decision Ltd | Information & communication | 2018 |
| Linford Law Consultancy Limited | Professional & scientific | 2014 |
| Ling Road Management Company Limited | Real estate | 2004 |
| Linguocommerce Ltd | Wholesale & retail | 2024 |
| Link Fabrication & Machining Limited | Manufacturing | 2002 |
| Link Homes (Dorset) Limited | Real estate | 2019 |
| Linktalent Global Ltd | Administrative & support | 2025 |
| Linox Ltd | Wholesale & retail | 2020 |
| Linskill Armstrong (Property) Limited | Real estate | 2016 |
| Linskill Armstrong Limited | Professional & scientific | 2001 |
| Linton House Management Limited | Households | 1986 |
| Linux Akademia Ltd | Information & communication | 2015 |
| Lion Cargo Limited | Transport & logistics | 2024 |
| Lion Catering Limited | Wholesale & retail | 2018 |
| Lion Wholesale Limited | Wholesale & retail | 2023 |
| Lionfoot Limited | Real estate | 2020 |
| Lionheart Virtual Assistance Ltd | Professional & scientific | 2023 |
| Lions Tooth Development Limited | Administrative & support | 2017 |
| Liquid Insights Ltd | Administrative & support | 2019 |
| Liquidity Finance Solutions Limited | Financial services | 2025 |
| Lisa Ballett Limited | Hospitality | 2009 |
| Lisa Cook Limited | Administrative & support | 2012 |
| Lisia Digital Limited | Information & communication | 2022 |
| Lissa V Ltd | Health & social care | 2023 |
| Lissenden Limited | Households | 1979 |
| Lite-Box Imagery Ltd | Professional & scientific | 2015 |
| Lithica Studio Limited | Information & communication | 2025 |
| Little Beans Day Care (Garland) Limited | Education | 2015 |
| Little Beans Day Care Limited | Education | 2014 |
| Little Bear Holdings Ltd | Financial services | 2024 |
| Little Blue HUT Ltd | Information & communication | 2015 |
| Little Bugs and Bees Ltd | Health & social care | 2024 |
| Little Car Company Dorset Ltd | Wholesale & retail | 2023 |
| Little Crescent Lane Ltd | Arts & recreation | 2026 |
| Little Gems Shop Ltd | Wholesale & retail | 2020 |
| Little Hamster Ltd | Wholesale & retail | 2025 |
| Little House of Heat Ltd | Manufacturing | 2024 |
| Little Light Candles Ltd | Wholesale & retail | 2020 |
| Little Owls Developments Limited | Construction | 2020 |
| Little Puddle Corporation Limited | Other services | 2014 |
| Little Red Roaster Ltd | Hospitality | 2018 |
| Little Stars Holdings Limited | Financial services | 2017 |
| Little V Ltd | Wholesale & retail | 2017 |
| Little White Feathers Press Ltd | Information & communication | 2025 |
| Littlebig Essentials Limited | Wholesale & retail | 2022 |
| Littleton 4X4 Limited | Wholesale & retail | 2026 |
| LIV O'Brien Limited | Arts & recreation | 2022 |
| Live in Joy Ltd | Other services | 2020 |
| Live Mmedia Holdings Ltd | Financial services | 2023 |
| Live Mmedia Services Ltd | Professional & scientific | 2023 |
| Living Dimensions Ltd | Professional & scientific | 2021 |
| Living Floors (Southern) Ltd | Construction | 2007 |
| Living Home Tech Limited | Construction | 2014 |
| Living Outside Ltd | Wholesale & retail | 2014 |
| Living Word International | Other services | 2015 |
| Livingstone Communications Ltd | Information & communication | 2026 |
| Livingstone Road Garage Ltd | Wholesale & retail | 2005 |
| Livoliv Cosmetics Ltd. | Wholesale & retail | 2017 |
| LJ Hills Consulting Ltd | Administrative & support | 2024 |
| LJ Williams Business Solutions Ltd | Professional & scientific | 2026 |
| LJ3 Management Limited | Real estate | 2025 |
| LJ4 Management Limited | Real estate | 2024 |
| LJK87 Ltd | Financial services | 2022 |
| LKG Consultancy Ltd | Professional & scientific | 2023 |
| Llama Van Conversions Ltd | Wholesale & retail | 2025 |
| LLL Club Ltd | Other services | 2016 |
| Lloyd Davis Investments Limited | Construction | 1988 |
| LLS Solutions Ltd | Administrative & support | 2022 |
| LM Commercial Ltd | Professional & scientific | 2017 |
| LM Operations Limited | Financial services | 2023 |
| LM Properies South Ltd | Real estate | 2025 |
| LMA Empreendimentos Digitais Limited | Wholesale & retail | 2025 |