| Lmmi Investments Ltd | Real estate | 2025 |
| Local Bar Five Limited | Hospitality | 2017 |
| Local Bar Four Limited | Hospitality | 2017 |
| Local Bar Seven Limited | Hospitality | 2018 |
| Local Bar SIX Limited | Hospitality | 2017 |
| Locate Heating and Plumbing Ltd | Construction | 2021 |
| Loci Group Limited | Health & social care | 2017 |
| Lockbusters Locksmiths NW Limited | Manufacturing | 2024 |
| Locksmith Manchester Ltd | Administrative & support | 2025 |
| LOCUMDOCTOR4U Ltd. | Health & social care | 2012 |
| Lodhi Private Ltd | Hospitality | 2017 |
| Logan Brooks Services Limited | Professional & scientific | 2022 |
| Logogogo EU Limited | Wholesale & retail | 2019 |
| Logogogo Ltd | Administrative & support | 2024 |
| Logos 4 Clothes Ltd. | Professional & scientific | 2015 |
| Lolly Payroll Services Ltd | Administrative & support | 2022 |
| London BOY Entertainment Group Limited | Information & communication | 2009 |
| London Brands Group Limited | Wholesale & retail | 2023 |
| London Perfusion Limited | Wholesale & retail | 2019 |
| London ST Mini MKT Ltd | Wholesale & retail | 2025 |
| London ST Valeting Center Limited | Administrative & support | 2023 |
| London Street 87 Limited | Households | 2025 |
| London Street Coffee Limited | Hospitality | 2025 |
| London Street Mini Market Limited | Wholesale & retail | 2021 |
| Londonist Textile Limited | Other services | 2010 |
| Long Lane Developments Limited | Construction | 2024 |
| Longevity Life Supplements Ltd | Wholesale & retail | 2019 |
| Longton Court (Ainsdale) RTM Company Limited | Households | 2015 |
| Longwood Holdings Ltd | Real estate | 2021 |
| Longwood Planning & Architecture Ltd | Professional & scientific | 2021 |
| Longworth Services Limited | Health & social care | 2022 |
| Lord ST Bars Ltd | Hospitality | 2018 |
| Lord Street Management (Regent Court) Limited | Households | 1977 |
| Lord Street Management Limited | Professional & scientific | 1977 |
| Lord Street Property Limited | Real estate | 2021 |
| Lordmekaz Limited | Energy | 2016 |
| Lost Golf Ltd | Wholesale & retail | 2024 |
| Lottie's Builders Ltd | Construction | 2024 |
| Lottie's Property Ltd | Real estate | 2022 |
| Louise Michaels Estates Ltd | Construction | 2020 |
| Loumas Solutions Ltd | Professional & scientific | 2018 |
| Louna Assets Limited | Information & communication | 2022 |
| Love Photography Ltd | Professional & scientific | 2021 |
| Lovegrove Retail & Logistics Ltd | Wholesale & retail | 2025 |
| Lovejimbo Ltd | Information & communication | 2015 |
| LOVILOVI3 Limited | Administrative & support | 2018 |
| LOW Lane (Horsforth) Management Company Limited | Real estate | 2008 |
| LP Asset Limited | Real estate | 2025 |
| LSG Advisory Ltd | Professional & scientific | 2020 |
| LSNPM599 Ltd | Real estate | 2024 |
| LSNTRADING599 Ltd | Hospitality | 2024 |
| LTC Projects Limited | Construction | 2024 |
| LTC Props Limited | Information & communication | 2014 |
| Lucas Furniture Limited | Extraterritorial | 2015 |
| Lucio Sergio BJJ Academy Limited | Arts & recreation | 2022 |
| Lucky Garden Take Away Ltd | Hospitality | 2023 |
| Lucy Lous Boutique Ltd | Wholesale & retail | 2019 |
| Lucy Mason Aesthetics Limited | Other services | 2026 |
| Luela Compliance & Financial Ltd | Financial services | 2013 |
| Lulworth Holdings Limited | Financial services | 2023 |
| Lulworth Lodge Limited | Households | 1971 |
| Lulworth Management Ltd | Hospitality | 2025 |
| Lulworth Oaks Owners Ltd | Households | 2000 |
| Lulworth Venture Limited | Arts & recreation | 2023 |
| Lulworth View RTM Company Ltd | Households | 2020 |
| Lumen Heights Ltd | Arts & recreation | 2026 |
| Luminous Pictures Limited | Information & communication | 1997 |
| Lumono Ltd | Construction | 2023 |
| Luna Light Healing and Holistic Centre Limited | Administrative & support | 2017 |
| Luna Park (Blackpool) Limited | Professional & scientific | 1929 |
| Lundy North Contracts Ltd | Construction | 2024 |
| Lune Engineering Holding Company Limited | Manufacturing | 2017 |
| Lune Engineering Limited | Manufacturing | 2006 |
| Lune Powdercoating Limited | Manufacturing | 2014 |
| Lune Venues Ltd | Hospitality | 2021 |
| Lunt Farm Limited | Construction | 2018 |
| Lusso Tesoro Limited | Wholesale & retail | 2020 |
| Luty Limited | Extraterritorial | 2013 |
| Luxe Hair by LG Limited | Other services | 2022 |
| Luxe Stays Trading Ltd | Real estate | 2025 |
| Luxury 2 YOU Ltd | Wholesale & retail | 2023 |
| Luxury Store Limited | Wholesale & retail | 2026 |
| Luxury Van Limited | Transport & logistics | 2020 |
| LUZ Consultancy Ltd | Professional & scientific | 2015 |
| Lwmg Midco Limited | Extraterritorial | 2016 |
| Lwmg Topco Limited | Extraterritorial | 2016 |
| Lwmn Ltd | Professional & scientific | 2026 |
| Lxvi Holding Limited | Professional & scientific | 2025 |
| LY Building Contractors Limited | Construction | 2025 |
| LYC Services Ltd | Real estate | 2020 |
| Lyndale Care Home Limited | Health & social care | 2013 |
| Lyndale Heating Limited | Construction | 2008 |
| Lyndhurst Court (Birkdale) Residents' Association Limited | Households | 1976 |
| Lyndhurst Engineering Solutions Ltd | Professional & scientific | 2019 |
| Lynn Thompson Estate Agents Limited | Real estate | 2006 |
| Lynn Thompson Lettings Limited | Real estate | 2006 |
| Lyon’S Luxury Properties Ltd | Real estate | 2023 |
| Lytham Golf Ltd | Wholesale & retail | 2018 |
| M a Housing Southport Limited | Real estate | 2022 |
| M & D Properties (Southport) Ltd | Real estate | 2013 |