| Laramie Consultancy Limited | Professional & scientific | 2017 |
| Larfoot Construction Limited | Construction | 2020 |
| Laris Consultancy Ltd | Professional & scientific | 2026 |
| Lark Holdings Limited | Financial services | 2025 |
| Larka Property Limited | Real estate | 2019 |
| Laroche Coaching Limited | Professional & scientific | 2022 |
| Larsa Travel & Tourism Ltd | Administrative & support | 2014 |
| Larusi Ltd | Wholesale & retail | 2009 |
| LAS Film Productions Limited | Information & communication | 2022 |
| Lasaderm Limited | Other services | 2011 |
| Lasani & Company International Ltd | Wholesale & retail | 2025 |
| Lashkari Limited | Wholesale & retail | 2022 |
| Last Crumb Cakes Ltd | Manufacturing | 2023 |
| Last Family Property Holdings Limited | Real estate | 2024 |
| Last LAP Logistics Ltd | Transport & logistics | 2026 |
| Last Stop Limited | Wholesale & retail | 2025 |
| Lata Consulting Limited | Professional & scientific | 2015 |
| Lata Kakwani Ltd | Wholesale & retail | 2024 |
| Lateef Ltd | Wholesale & retail | 2019 |
| Lathrope Consulting Limited | Professional & scientific | 2021 |
| Laughing Panda Ltd | Real estate | 2020 |
| Laughtale Ltd | Wholesale & retail | 2024 |
| Launch Key Ltd | Professional & scientific | 2015 |
| Launch LAB Consulting Limited | Administrative & support | 2020 |
| Laura Pearce Ltd | Professional & scientific | 2026 |
| Laureate Consultants Ltd | Administrative & support | 2020 |
| Laureate Photos & Videos Limited | Information & communication | 2018 |
| Laurel Pharmacy Unlimited | Extraterritorial | 2008 |
| Lauren Jacobson Consulting Ltd | Professional & scientific | 2024 |
| Laurentiustefan Limited | Transport & logistics | 2016 |
| Laurian Consultants Limited | Information & communication | 2007 |
| Lauriane Rouault Limited | Arts & recreation | 2022 |
| Laurium Investments Ltd | Professional & scientific | 2003 |
| Lautan Management Limited | Professional & scientific | 2019 |
| LAV Carpenters Ltd | Manufacturing | 2024 |
| LAV Doors Limited | Manufacturing | 2025 |
| Lavchem UK Limited | Manufacturing | 2020 |
| Lavender & Stone Beauty Rooms Limited | Other services | 2006 |
| Lavender (Management) Limited | Extraterritorial | 1996 |
| Lavender Bates Limited | Real estate | 2025 |
| Lavers Consultancy Ltd | Real estate | 2020 |
| Lavington Green Limited | Real estate | 2024 |
| Lavnik Transport Ltd | Transport & logistics | 2026 |
| Lavy Building Ltd | Construction | 2019 |
| Law Mergers & Acquisitions Limited | Administrative & support | 2019 |
| Lawangin Kochai Ltd | Wholesale & retail | 2023 |
| Lawless Flooring Limited | Construction | 2007 |
| Lawnscience ST Albans Limited | Administrative & support | 2010 |
| Lawrence Grant Consultancy Limited | Administrative & support | 2012 |
| Lawrence Grant Group Limited | Administrative & support | 2025 |
| Lawrence Grant Holdings Limited | Administrative & support | 2008 |
| Lawrence-Vacher LLP | | 2002 |
| Lawson & Associates Consultancy Ltd | Professional & scientific | 2016 |
| Lawson & Partners Limited | Administrative & support | 2024 |
| Lawson Building & Maintenance Ltd | Construction | 2012 |
| Lawson Jewelry Ltd | Manufacturing | 2019 |
| Lawson Lockwood Limited | Wholesale & retail | 2020 |
| Lawson Square Limited | Extraterritorial | 2013 |
| Lawton Gowns Limited | Real estate | 1939 |
| Lawton Shah Solicitors Ltd | Professional & scientific | 2024 |
| LAX Properties Ltd | Construction | 2010 |
| LAX World Ltd | Construction | 2017 |
| Laxbrin Limited | Real estate | 1976 |
| Laxcorpevents Ltd | Arts & recreation | 2019 |
| Laxmera Solutions Ltd | Information & communication | 2025 |
| Laxmi Accountancy Ltd | Information & communication | 2014 |
| Laxmi Avyan Limited | Wholesale & retail | 2025 |
| Laxmi Fast Food Limited | Hospitality | 2025 |
| Laxmi Financial Services Limited | Professional & scientific | 1986 |
| Laxmi Gold House Ltd | Wholesale & retail | 2023 |
| Laxmi Holdings Ltd | Real estate | 2021 |
| Laxmi Narayan Enclave Ltd | Real estate | 2025 |
| Laxsh Limited | Real estate | 2006 |
| Laxsh Pearl Limited | Health & social care | 2025 |
| Laxton Developments Ltd | Real estate | 2002 |
| Laxus Investment Ltd | Real estate | 2021 |
| Laya Consulting Limited | Hospitality | 2001 |
| Layal Props Limited | Real estate | 2024 |
| Layk Limited | Financial services | 2020 |
| Laykas Group Holdings Ltd | Professional & scientific | 2025 |
| Layla Beautiful House Ltd | Construction | 2022 |
| Layton Place Limited | Households | 2011 |
| LAZ Builders Limited | Construction | 2024 |
| Lazar Security Services Limited | Administrative & support | 2021 |
| Lazfa Limited | Real estate | 2013 |
| Lazgill Limited | Professional & scientific | 1940 |
| Lazuro Cons Ltd | Construction | 2024 |
| Lazy Games Ltd | Information & communication | 2026 |
| Lazy Lazy Limited | Real estate | 2011 |
| Lazy Marketing Limited | Education | 2023 |
| Lazy Sunday Films Limited | Information & communication | 2019 |
| Lazystore UK Limited | Wholesale & retail | 2024 |
| LB Heals Limited | Health & social care | 2022 |
| LB Proclean Ltd | Administrative & support | 2025 |
| LB Taxi Services Ltd | Wholesale & retail | 2016 |
| Lb&S Ltd | Wholesale & retail | 2025 |
| Lbaacademy Limited | Other services | 2026 |
| LBG Properties Ltd | Real estate | 2017 |
| Lbrg Ltd | Real estate | 2014 |
| LBS Plumbers Limited | Construction | 2021 |