| Livelin Clest Ltd | Wholesale & retail | 2025 |
| Livestock Suppliers Ltd | Wholesale & retail | 2026 |
| Living Space (Northern) Limited | Real estate | 2004 |
| Liynk Ltd | Information & communication | 2019 |
| Liyue Ltd | Wholesale & retail | 2021 |
| LJR Deliveries Limited | Transport & logistics | 2025 |
| Ljsmith Construction Limited | Construction | 2015 |
| LL Bala Limited | Real estate | 2021 |
| Llinngzzwm Ltd | Wholesale & retail | 2026 |
| LLM Impact Metrics Ltd | Information & communication | 2026 |
| LLT Properties (Staffordshire) Ltd | Real estate | 2023 |
| LMH Midlands Limited | Health & social care | 2014 |
| Lms-Patriot Company Limited | Manufacturing | 2008 |
| LNA Property Ltd | Construction | 2024 |
| Lntc Group Ltd | Information & communication | 2019 |
| Loach Financials Limited | Financial services | 2014 |
| Loadhems Ltd | Construction | 2021 |
| Local Service 5U Ltd | Information & communication | 2025 |
| Lockers Group Ltd | Construction | 2025 |
| Lockgate Stoves Limited | Wholesale & retail | 2018 |
| Locum Central Limited | Health & social care | 2017 |
| Lodginet Stafford Ltd | Construction | 2024 |
| LOE Unused Limited | Real estate | 2025 |
| Lohen Limited | Wholesale & retail | 2004 |
| Loisymax Realty Ltd | Real estate | 2022 |
| London BIT Capital Limited | Financial services | 2021 |
| London Handsome International Trade Co., Ltd | Wholesale & retail | 2022 |
| London International Capital Ltd | Professional & scientific | 2014 |
| London Road Sales Limited | Wholesale & retail | 2025 |
| Londoncryo (Belgravia) Limited | Other services | 2018 |
| Londoncryo (City) Limited | Other services | 2016 |
| Londoncryo (SJW) Limited | Other services | 2021 |
| Londoncryo Holdings Limited | Financial services | 2016 |
| Londoncryo Limited | Other services | 2017 |
| Longshine Overseas Limited | Financial services | 2021 |
| Looking at Toys Limited | Wholesale & retail | 2017 |
| Lord's Care Solutions UK Ltd | Health & social care | 2019 |
| Lorika (London) Co., Ltd | Manufacturing | 2017 |
| Lost Language Ltd | Professional & scientific | 2019 |
| LOT- YES Technology Ltd | Wholesale & retail | 2021 |
| Lottam Holdings Ltd | Financial services | 2021 |
| Lotus Accounting Limited | Professional & scientific | 2014 |
| Lotus Flower Consultancy Ltd | Professional & scientific | 2013 |
| Louis & Sons Ltd | Professional & scientific | 2017 |
| Lounge Leisure Limited | Hospitality | 2005 |
| Loungerie Ltd | Wholesale & retail | 2021 |
| Love's Independent Funeral Directors Limited | Other services | 2021 |
| LOVE4PETS247 Ltd | Wholesale & retail | 2021 |
| Loveday Partners Ltd | Professional & scientific | 2025 |
| Lovejms Ltd | Wholesale & retail | 2021 |
| Loving Arms Care and Support Limited | Hospitality | 2019 |
| Loving Owners Ltd | Financial services | 2022 |
| Lowe and Elliott Surveyors Limited | Professional & scientific | 2019 |
| Lowe Surveyors Limited | Professional & scientific | 2017 |
| Lower Farm (Bednall) Limited | Agriculture & fishing | 1963 |
| Lower Forge Leisure Limited | Real estate | 2022 |
| Lower Reule Farm Limited | Agriculture & fishing | 1975 |
| Lowfield (Gnosall) Management Company Limited | Households | 2015 |
| Loynton Limited | Professional & scientific | 1978 |
| Loynton Trout Fisheries Limited | Agriculture & fishing | 2001 |
| LPP Fire Protection Specialists Limited | Administrative & support | 2023 |
| LS (International) Ltd | Extraterritorial | 2012 |
| LS Optometry Limited | Wholesale & retail | 2011 |
| LSK Brickwork Ltd | Construction | 2018 |
| Lsquared Ltd | Health & social care | 2022 |
| LSR Partners LLP | | 2023 |
| Lssd Fateh Enterprises Ltd | Wholesale & retail | 2025 |
| LT Plastering & Damp Proofing Services Ltd | Construction | 2026 |
| Lttgfrs Ltd | Wholesale & retail | 2023 |
| Lucarrell Ltd | Manufacturing | 2020 |
| Lucienstar Ltd | Wholesale & retail | 2024 |
| Lucile Enterprises Ltd | Real estate | 2026 |
| Luck Star Merch Limited | Administrative & support | 2025 |
| Lucky HU Limited | Hospitality | 2026 |
| Lucky Star Beauty Ltd | Other services | 2018 |
| Lucy Alexander Bridal Wear Limited | Wholesale & retail | 2012 |
| Lugeiye Trade Co., Ltd | Wholesale & retail | 2024 |
| Luisbabaga Import & Export Co., Ltd | Wholesale & retail | 2024 |
| Luke GEE Agri Ltd | Other services | 2017 |
| Lumirise Ltd | Wholesale & retail | 2025 |
| Lunacosmetics Ltd | Other services | 2024 |
| Lunar Travel (Staffordshire) Ltd | Transport & logistics | 2025 |
| Lunn Development (Stafford) Limited | Real estate | 2015 |
| Luscombe Surgical Limited | Health & social care | 2011 |
| LUV 2 Holiday Ltd | Administrative & support | 2021 |
| Luxe Companions Ltd | Wholesale & retail | 2023 |
| Luxe Solutions Limited | Administrative & support | 2025 |
| Luxeclean Services Ltd | Administrative & support | 2025 |
| Luxenet.Co Ltd | Real estate | 2026 |
| Luxury Hairstylist Ltd | Other services | 2023 |
| Lvsparks Ltd | Construction | 2025 |
| Lvxingzhebl Co., Ltd | Wholesale & retail | 2025 |
| LW -YOU Believe WE Achieve Ltd | Health & social care | 2025 |
| Lwrebeke Limited | Wholesale & retail | 2025 |
| LYC Coaching Ltd | Arts & recreation | 2024 |
| Lycett Accident Repair Centre Ltd | Wholesale & retail | 2023 |
| Lycett Investments Ltd | Real estate | 2026 |
| Lylux Group UK Ltd | Manufacturing | 2024 |
| Lyme and Wood Developments Limited | Extraterritorial | 2001 |
| Lyme Properties Ltd | Real estate | 2011 |