| Libresoft Ltd | Information & communication | 2017 |
| Liddell PIC Limited | Financial services | 2020 |
| Life Again Services Ltd | Health & social care | 2023 |
| Life Logbook Ltd | Information & communication | 2025 |
| Lifeforward Coaching Limited | Extraterritorial | 2015 |
| Lifeforward Ltd | Professional & scientific | 2015 |
| Lifelong Medical Ltd | Health & social care | 2022 |
| Lifepartnerwills Ltd | Professional & scientific | 2024 |
| Lifespan Unlimited Ltd | Health & social care | 2026 |
| Lifestyle Systems Ltd | Wholesale & retail | 2018 |
| Lifetime Property Solutions Ltd | Professional & scientific | 2018 |
| Light Properties Limited | Construction | 2001 |
| Lightstep Consulting Limited | Information & communication | 2013 |
| Lijoma Ltd | Administrative & support | 2018 |
| Lima Group Limited | Professional & scientific | 2005 |
| Limbworks Limited | Health & social care | 2007 |
| Limelight Websites Limited | Professional & scientific | 2016 |
| Limitless Financial Services Ltd | Financial services | 2018 |
| Limitless Management Consultancy Limited | Professional & scientific | 2025 |
| Limon Collective Limited | Other services | 2023 |
| Lindsay & Sons Limited | Wholesale & retail | 1992 |
| Lineker Bennett Ltd | Wholesale & retail | 1982 |
| Linia Floren Ltd | Wholesale & retail | 2022 |
| Liome Property Investment Ltd | Construction | 2021 |
| Lion Press Ltd | Professional & scientific | 2017 |
| Lish & Associates Ltd | Professional & scientific | 2022 |
| Lithos Real Estate Ltd | Financial services | 2021 |
| Litsync Ltd | Information & communication | 2025 |
| Litten Place Management Company Limited | Households | 2012 |
| Little Bear Labs Ltd | Information & communication | 2022 |
| Little Bear Speech Therapy Ltd | Health & social care | 2025 |
| Little Bears Winchester Limited | Education | 2020 |
| Little Dog Construction Ltd | Construction | 2025 |
| Little Globe Productions Limited | Information & communication | 2026 |
| Little Hayes Park Management Company Limited | Administrative & support | 1994 |
| Little Headdon Investments Limited | Real estate | 2018 |
| Little Minds Psychology Services Ltd | Education | 2023 |
| Little Panda Chinese Take Away Limited | Hospitality | 2022 |
| Little Room Limited | Information & communication | 2002 |
| Livander Contracting Limited | Professional & scientific | 2016 |
| Live Your Values Ltd | Education | 2017 |
| Lived Perspectives CIC | Education | 2023 |
| Liver UK Ltd | Extraterritorial | 2025 |
| Living With Harmony LLP | | 2015 |
| Livingston Motorsport Limited | Administrative & support | 2018 |
| LJB Futures Limited | Financial services | 2014 |
| Ljsmbs Ltd | Professional & scientific | 2020 |
| Llfh Ltd | Households | 2018 |
| LLM Garage Services Limited | Wholesale & retail | 2025 |
| LLS (Winchester) Limited | Households | 2018 |
| LM Heating Services Ltd | Construction | 2023 |
| LMS Property Venture Ltd | Real estate | 2025 |
| LNM Systems Limited | Professional & scientific | 2005 |
| Loakewood Property Group Ltd | Real estate | 2022 |
| Local Self Storage Holdings Ltd | Real estate | 2020 |
| Location Global Ltd | Professional & scientific | 2015 |
| Location International Ltd | Professional & scientific | 2020 |
| Lockburn Place Management Company Limited | Households | 2022 |
| Locksmith Ltd | Construction | 2025 |
| Lodestarx Limited | Professional & scientific | 2026 |
| Lodge Farm (NO 1) Limited | Professional & scientific | 2006 |
| Lodge Farm (NO 2) Limited | Professional & scientific | 2006 |
| Lomandra Limited | Hospitality | 2017 |
| Lombard Strategic Solutions Ltd | Information & communication | 2025 |
| Lomond Cyber Ltd | Information & communication | 2026 |
| London & Wessex Developments (City) Limited | | 1988 |
| London and South Property Services Ltd. | Real estate | 1993 |
| London Camera Exchange Holdings Limited | Wholesale & retail | 1969 |
| London Camera Exchange Limited | Wholesale & retail | 1992 |
| London Camera Exchange Trustees Limited | Other services | 2020 |
| London Capital Meat Traders Limited | Wholesale & retail | 2021 |
| London Medical Holdings Limited | Real estate | 2019 |
| London Medical Limited | Health & social care | 2019 |
| London Medical Properties Limited | Real estate | 2001 |
| London Merchants and Company Limited | Information & communication | 1986 |
| Lonestar Strategies Limited | Professional & scientific | 2014 |
| Long Time Bidco I Limited | Real estate | 2025 |
| Long Time Bidco II George HSE Limited | Real estate | 2025 |
| Longbeam Limited | Information & communication | 2025 |
| Longdown Vineyard LLP | | 2025 |
| Longmuir (Properties) Limited | Real estate | 1963 |
| Longparish Limited | Professional & scientific | 2025 |
| Longstock Capital Ltd | Real estate | 2020 |
| Longstock Catering Ltd | Hospitality | 2024 |
| Longwood Game Farm Limited | Agriculture & fishing | 2013 |
| Longwood Sporting Society Limited | Other services | 2021 |
| Longyear.Uk Ltd | Wholesale & retail | 2023 |
| LOOK360 Design Limited | Professional & scientific | 2015 |
| Lordswood (Property Management) Limited | Real estate | 1971 |
| Lorraine LEE Training Ltd | Professional & scientific | 2015 |
| Lost at Sea Pictures Ltd | Information & communication | 2022 |
| LOT3 South Ltd | Real estate | 2009 |
| Lothan Limited | Professional & scientific | 2004 |
| Lotton Limited | Real estate | 2023 |
| Lotus Accommodation Limited | Real estate | 2020 |
| Louisa Thomas Ltd | Public administration | 2024 |
| Lounge 6 Ltd | Other services | 2020 |
| Love SKI Ltd | Administrative & support | 2016 |
| Lovell Fuels Limited | Wholesale & retail | 2001 |
| Lovers Rock Limited | Wholesale & retail | 2013 |