| Lomack Commercial Limited | Real estate | 2016 |
| Lomack Company Limited | Health & social care | 2000 |
| Lomoba Freights Ltd | Transport & logistics | 2020 |
| Lomodu Ltd | Professional & scientific | 2025 |
| London Boxing Rings Ltd | Arts & recreation | 2015 |
| London Circular Distribution Limited | Transport & logistics | 2013 |
| London Demolition Consulting Group Ltd | Construction | 2024 |
| London Digital Media Limited | Administrative & support | 2017 |
| London Financial Consultants Limited | Financial services | 2013 |
| London I P Distribution Limited | Transport & logistics | 2005 |
| London Leisure UK Limited | Wholesale & retail | 2009 |
| London Media Collective Ltd | Information & communication | 2017 |
| London Media Ensemble Ltd | Information & communication | 2011 |
| London Mortgage & Wealth Consultants Ltd | Financial services | 2021 |
| London Mortgage Consultants Limited | Financial services | 2026 |
| London Nails 91 Ltd | Other services | 2025 |
| London Pro Abseiling Ltd | Construction | 2019 |
| London Road Meat & Groceries Ltd | Wholesale & retail | 2021 |
| London Road Vaping Ltd | Wholesale & retail | 2018 |
| London Thiruvalluvar Association Limited | Arts & recreation | 2025 |
| London Wills & Legacy Consultants Ltd | Administrative & support | 2015 |
| Londonmpr Limited | Wholesale & retail | 2017 |
| Londopa Limited | Health & social care | 2014 |
| Long Barn Studio Ltd | Real estate | 2020 |
| Longacre Management Company Limited | Real estate | 2010 |
| Longevity 552 Limited | Other services | 2021 |
| Longford Ventures Ltd | Extraterritorial | 2020 |
| Longmeadow (Clophill) Management Company Limited | Real estate | 2013 |
| Longpath Consultants Limited | Administrative & support | 2009 |
| Longridge Freehold Management Limited | Households | 2025 |
| Longridge Limited | Real estate | 2015 |
| Longstaff Investments Limited | Financial services | 2007 |
| Lonsdale Painting & Decorating Limited | Construction | 2003 |
| Looks Hair and Beauty Limited | Wholesale & retail | 2004 |
| Looks N Locks Ltd | Other services | 2001 |
| Looks; Dapper Limited | Other services | 2012 |
| Lora in Time Ltd | Transport & logistics | 2022 |
| Lord Loxleys NON Profit Organisation Ltd | Other services | 2022 |
| Lord Public Relations Limited | Professional & scientific | 2007 |
| Lore-Yan Services Limited | Transport & logistics | 2016 |
| Lorenzo Sourcing Ltd | Administrative & support | 2023 |
| Lorenzo Supercar Show Limited | Wholesale & retail | 2026 |
| Lorikal Ltd | Information & communication | 2023 |
| Lorraine Court (Bedford) Residents Association Limited | Professional & scientific | 1985 |
| Lorraine Khan Solutions Ltd | Professional & scientific | 2019 |
| LOS Salseros Ltd | Arts & recreation | 2024 |
| Lotola Limited | Real estate | 2026 |
| Lotte Rose Bridal Boutique Ltd | Wholesale & retail | 2020 |
| Lotus Flower Music Ltd | Arts & recreation | 2023 |
| Lou's Private Tuition Ltd | Education | 2021 |
| Louis Property Management Ltd | Health & social care | 2025 |
| Louise Harris PR Limited | Professional & scientific | 2013 |
| Louise Morris Ltd | Information & communication | 2022 |
| Louise Parker Associates Ltd | Professional & scientific | 2024 |
| Louise Worthy Medical Writing Ltd | Professional & scientific | 2018 |
| Louize Jonas Photography Ltd | Professional & scientific | 2024 |
| Loulabelle MAY Rose Ltd | Wholesale & retail | 2024 |
| Lousada (Midlands) Limited | Real estate | 2018 |
| Lousada Holdings Limited | Financial services | 2007 |
| Lousada Investments Holdings Limited | Real estate | 2014 |
| Lousada Investments Limited | Real estate | 2014 |
| Lousada Properties Limited | Real estate | 2014 |
| Lousada Property Limited | Real estate | 2014 |
| Lovat Properties Limited | Real estate | 2025 |
| Love & Care Mentoring Limited | Health & social care | 2022 |
| Love Care & Wellness Services for Inequalities Limited | Health & social care | 2023 |
| Love in Decor Ltd | Hospitality | 2022 |
| Love My Chillies Limited | Agriculture & fishing | 2012 |
| Love the Gym Limited | Education | 2024 |
| Lovejoys Antiques Ltd | Wholesale & retail | 2019 |
| Lovelles Ltd | Extraterritorial | 2006 |
| Lovett's Place Management Ltd | Households | 2024 |
| Lovin ALY Ltd | Transport & logistics | 2018 |
| Loving Nutrients Ltd | Wholesale & retail | 2017 |
| LOW Cost Bills Ltd. | Administrative & support | 2015 |
| Lower Your Costs Ltd | Administrative & support | 2025 |
| Lowery Demolition Limited | Construction | 1983 |
| Lowery Waste Ltd | Water & waste | 2021 |
| Lowes Construction Industry Limited | Construction | 2025 |
| Lowrise Brewery Limited | Manufacturing | 2023 |
| Loxham Precision Limited | Manufacturing | 2000 |
| Loxley HR & Mediation Ltd | Administrative & support | 2021 |
| Loyd Homes Ltd | Financial services | 2017 |
| LPG Auto Supplies Ltd | Wholesale & retail | 2022 |
| Lpszeb Ltd | Professional & scientific | 2022 |
| LRB Events Ltd | Wholesale & retail | 2016 |
| LRF Personal Training Limited | Arts & recreation | 2021 |
| LRG Commercial Solutions Limited | Wholesale & retail | 2018 |
| LRP Car and Van Repair Ltd | Wholesale & retail | 2025 |
| LS Hayes Limited | Financial services | 2025 |
| LS Property Services Ltd | Construction | 2017 |
| LSA Infra Ltd | Real estate | 2022 |
| LSA Technologies Ltd | Information & communication | 2014 |
| Lsaloma Limited | Real estate | 2025 |
| LSB Trading Limited | Manufacturing | 2014 |
| Lscar Limited | Wholesale & retail | 2023 |
| LSM Haulage Ltd | Transport & logistics | 2026 |
| Lssrholdings Ltd | Construction | 2025 |
| Lstrade Property Ltd | Real estate | 2024 |
| LT Building & Property Services Ltd | Construction | 2025 |