| Laser Beauty Room Limited | Other services | 2011 |
| Laser Clinic Oadby Ltd | Other services | 2018 |
| Laser DR Ltd | Manufacturing | 2017 |
| Laser Edge Designs Ltd | Professional & scientific | 2025 |
| Laser Fold Ltd | Professional & scientific | 2018 |
| Laser Maze Limited | Extraterritorial | 2016 |
| Laser Quest (Leicester) Ltd | Arts & recreation | 2024 |
| Laser Travel Co. Limited | | 1978 |
| Lash Paradise Ltd | Other services | 2025 |
| Lasharp Transport Limited | Transport & logistics | 2008 |
| Lasj Advisory Limited | Other services | 2026 |
| Lasrado Logistics Ltd | Wholesale & retail | 2025 |
| Lassa Life Sciences Consultancy Limited | Professional & scientific | 2023 |
| Last Word Productions Ltd | Education | 2021 |
| LAST17 Ltd | Information & communication | 2012 |
| Lastborn Organization Limited | Construction | 2020 |
| Lasting Wills Limited | Real estate | 2024 |
| Laszlo Services Limited | Administrative & support | 2018 |
| Later Life Advice Ltd | Financial services | 2022 |
| Later Life Mortgages Limited | Other services | 2019 |
| Lateral Momentum Limited | Professional & scientific | 2021 |
| Latevalle Limited | Professional & scientific | 1986 |
| Latham & Co Estate & Letting Agents Limited | Real estate | 2014 |
| Latham Land and Property Ltd | Construction | 2023 |
| Latham-Ross Ltd | Hospitality | 2026 |
| Lathom Legal Ltd | Professional & scientific | 2026 |
| Latimer Design Limited | Wholesale & retail | 2000 |
| Latimer House Designs Ltd | Hospitality | 2023 |
| Latimer Perry Ltd | Professional & scientific | 2024 |
| Latimer Street Ltd | Households | 2025 |
| Latimerch Limited | Wholesale & retail | 2025 |
| Latko Ltd | Wholesale & retail | 2013 |
| Latte City Ltd | Wholesale & retail | 2023 |
| Lattitude Construction Ltd | Construction | 2025 |
| Laudia Properties Limited | Real estate | 2014 |
| Launch Padz Ltd | Construction | 2008 |
| Launchm Limited | Health & social care | 2014 |
| Launde Abbey Enterprises Limited | Wholesale & retail | 1999 |
| Launde Abbey Trust | Other services | 2010 |
| Launde Lodges Ltd | Hospitality | 2023 |
| Launde Secretaries Limited | Professional & scientific | 2001 |
| Laundry Go Ltd | Other services | 2023 |
| Laura Darrington Design Limited | Wholesale & retail | 2007 |
| Laurasa Ltd | Wholesale & retail | 2024 |
| Laurel Farm Meadows Limited | Real estate | 2024 |
| Laurellis Associates Limited | Professional & scientific | 2006 |
| Lauren Richardson Aesthetics Ltd | Other services | 2023 |
| Lauren's Fruit & VEG Ltd | Wholesale & retail | 2026 |
| Laurence Clarke Limited | Professional & scientific | 2013 |
| Laurent Claim Solutions Ltd | Construction | 2024 |
| Laurent Homes Ltd | Real estate | 2025 |
| Laurent Property Ltd | Construction | 2019 |
| Laureston Ltd | Real estate | 2020 |
| Lava Builders Ltd | Construction | 2025 |
| Lava Club Limited | Hospitality | 2014 |
| Lava Reactive Maintenance Ltd | Construction | 2022 |
| Laverde Management Limited | Health & social care | 2024 |
| Laverton Trading Ltd | Construction | 2025 |
| Lavin Homes Ltd | Real estate | 2025 |
| Lavish Nail Lounge Limited | Other services | 2020 |
| Lavizion Ltd | Other services | 2019 |
| Lavolio Ltd | Hospitality | 2013 |
| Law Guidance Ltd | Professional & scientific | 2025 |
| Law of Attraction Changed My Life Ltd | Arts & recreation | 2021 |
| Lawestt UK Ltd | Arts & recreation | 2025 |
| Lawford & Evans Ltd | Real estate | 2022 |
| Lawman Commercial Services Limited | Wholesale & retail | 1996 |
| Lawnlet Limited | Administrative & support | 2021 |
| Lawrance Bennett Partners Ltd | Financial services | 2014 |
| Lawrence Imaging Limited | Health & social care | 2019 |
| Lawson Consultancy Ltd | Professional & scientific | 2015 |
| Lawson West LLP | | 2007 |
| Lawson West Solicitors Limited | Professional & scientific | 2011 |
| Lawsyst Limited | Information & communication | 2017 |
| Lawtons Electrical Fire & Security Ltd | Construction | 2021 |
| Lawyer Code Limited | Information & communication | 2024 |
| Laxman Real Estate Limited | Real estate | 2022 |
| Laxmi (M/Cr) Ltd | Administrative & support | 2008 |
| Laxmi BAS Ltd | Hospitality | 2025 |
| Laxmi Enterprise (UK) Ltd | Wholesale & retail | 2013 |
| Laxmi Estates Ltd | Real estate | 2024 |
| Laxmi Investments Limited | Real estate | 1972 |
| Laxmi JI Ltd | Real estate | 2020 |
| Laxmi Lenghas Ltd | Wholesale & retail | 2018 |
| Laxmi SRI Holdings Limited | Real estate | 2021 |
| Laxmi SRI Ltd | Other services | 2020 |
| Laxmi Venture Capital Ltd | Administrative & support | 2025 |
| Laxmima Aesthetic Ltd | Other services | 2017 |
| Laxmin Ltd | Wholesale & retail | 2023 |
| Laxminarsimha Limited | Hospitality | 2025 |
| Laya & Luka Ltd | Transport & logistics | 2018 |
| Layanpharma Ltd | Wholesale & retail | 2025 |
| Layden Group Ltd | Other services | 2023 |
| Layka Business Services Ltd | Professional & scientific | 2021 |
| Layka Travel World Limited | Administrative & support | 2021 |
| Layla's Cleaning Service Ltd | Administrative & support | 2019 |
| Layla's Studio Ltd | Hospitality | 2025 |
| Laylah Counselling Limited | Public administration | 2025 |
| Laylo Building & Landscaping Ltd | Administrative & support | 2017 |
| Laylo Landscaping Supplies Ltd | Administrative & support | 2021 |