| Ladbrooke Properties Ltd | Real estate | 2023 |
| Lads PUB Company Limited | Hospitality | 2014 |
| LADS1918 Ltd | Administrative & support | 2017 |
| Lady B Loves Limited | Wholesale & retail | 2016 |
| Lady Betty Freehold Company Limited | Households | 2019 |
| Lady Molecatcher Ltd | Administrative & support | 2014 |
| Ladydriver Ltd | Transport & logistics | 2025 |
| Lae-Radiology Limited | Health & social care | 2024 |
| Lafford Surgical Ltd | Health & social care | 2023 |
| LAG Property Group Limited | Real estate | 2025 |
| Lagomago Racing Limited | Professional & scientific | 2023 |
| Laing Global Industries Limited | Information & communication | 2007 |
| Laipienis Limited | Transport & logistics | 2025 |
| Lair Blocks Limited | Wholesale & retail | 2024 |
| Lairick Ltd | Other services | 2025 |
| Lake & Nicholls Engineering Limited | Manufacturing | 2024 |
| Lake Jackson Limited | Professional & scientific | 2007 |
| Lakeland Prospects Ltd | Wholesale & retail | 2017 |
| Lakeside 300 Canteen Ltd | Hospitality | 2018 |
| Lakshetha Limited | Health & social care | 2023 |
| Lakshmi Sakuru Estates Ltd | Real estate | 2025 |
| LAL Bagan Ltd | Hospitality | 2019 |
| Lalbagh Lichfield Limited | Hospitality | 2018 |
| Laleo Language Limited | Information & communication | 2024 |
| LAM Farm Services Limited | Administrative & support | 2002 |
| Lamb's Signs Limited | Manufacturing | 2002 |
| Lambda Films Ltd | Information & communication | 2008 |
| Lambda Systems Limited | Information & communication | 2024 |
| Lambent Midlake Ltd | Professional & scientific | 2020 |
| Lambert Grove Residents Management Company Ltd | Real estate | 2015 |
| Lambert Mortgages Ltd | Financial services | 2021 |
| Lambert Partners Ltd | Professional & scientific | 2025 |
| Lamberts (Norwich) Limited | Wholesale & retail | 1963 |
| Lambford Homes (Developers) Limited | Construction | 2024 |
| Lambford Homes Limited | Construction | 2014 |
| Lamikia Global Company Ltd | Wholesale & retail | 2024 |
| Lanair International Limited | Information & communication | 1999 |
| Lancaster Traders Ltd | Wholesale & retail | 2020 |
| Lance Mason Limited | Professional & scientific | 2010 |
| Land & New Homes (East Anglia) Ltd | Real estate | 2023 |
| Land and Property Funding Limited | Administrative & support | 2017 |
| Land of Phones Limited | Wholesale & retail | 2026 |
| Landal Greenparks (UK) Limited | Hospitality | 2020 |
| Landcatalyst Limited | Real estate | 2026 |
| Landfall Property Group Ltd | Real estate | 2026 |
| Landfill Pipe & Construction Services Limited | Construction | 1998 |
| Landfill Pipe (Holdings) Limited | Construction | 2017 |
| Landguard Point Limited | Wholesale & retail | 2008 |
| Landise Ltd | Real estate | 2024 |
| Landlord Law Services Ltd | Information & communication | 2012 |
| Landlords Rent Limited | Information & communication | 2011 |
| Landtrans Solutions Ltd | Transport & logistics | 2018 |
| Landway Universal Ltd. | Real estate | 2007 |
| Lane Design & Consulting Ltd | Professional & scientific | 2022 |
| Laned Educational Services Ltd | Education | 2026 |
| Laned Properties Ltd | Real estate | 2023 |
| Lanes Commercial Catering Engineers Ltd | Professional & scientific | 2023 |
| Langford Solar Limited | Energy | 2015 |
| Langham Dairy Ltd | Wholesale & retail | 2020 |
| Langham Publishing Ltd | Information & communication | 2010 |
| Langham Recruitment Limited | Administrative & support | 2018 |
| Langhold Limited | Real estate | 1988 |
| Langley Abbey Estates Limited | Agriculture & fishing | 1989 |
| Langley River Centre Ltd | Manufacturing | 2023 |
| Langley School Development Limited | Education | 2008 |
| Langley Software Services Limited | Information & communication | 2019 |
| Langley's Quay Management Company Limited | Real estate | 2010 |
| Language Testing and Assessment Services Limited | Education | 2008 |
| Languedoc Properties Limited | Real estate | 2009 |
| Lankan Consulting Limited | Information & communication | 2018 |
| Lanpro Services Limited | Administrative & support | 2008 |
| Lansbury Contracts Limited | Construction | 2020 |
| Lansdowne (Poringland) Management Company Ltd | Real estate | 2016 |
| Lant Developments Ltd | Construction | 2020 |
| Lantern Financial Planning Ltd | Financial services | 2019 |
| Lanterns Glamping Norfolk Ltd | Hospitality | 2026 |
| Lapackerbylouis Ltd | Manufacturing | 2023 |
| LAR Norwich Ltd | Administrative & support | 2017 |
| Laragh Build Ltd | Construction | 2020 |
| Laragh House Developments (Swavesey) Limited | Real estate | 2007 |
| Laragh House Developments Ltd | Real estate | 2007 |
| Laral Dewinter Limited | Professional & scientific | 2017 |
| Larc Design & Build Ltd | Construction | 2020 |
| Larch Estates Limited | Real estate | 2007 |
| Laressi Mechanical and Electrical Ltd | Construction | 2012 |
| Large Bear Ltd | Information & communication | 2023 |
| Large Diameter Drilling Limited | Mining & quarrying | 2007 |
| Lark Construction Limited | Financial services | 2018 |
| Lark Group Ltd | Financial services | 2024 |
| Larkes Roofs Ltd | Construction | 2026 |
| Larkeys Farm Ltd | Manufacturing | 2025 |
| Larkin & Pham Ltd | Real estate | 2024 |
| Larking Gowen Corporate Transactions Limited | Extraterritorial | 2017 |
| Larking Gowen Holdings Limited | Extraterritorial | 2017 |
| Larking Gowen LLP | | 2017 |
| Larkins Financial Solutions Ltd | Financial services | 2015 |
| Larkman Lane Limited | Hospitality | 2023 |
| Larkshall (Wretham) Limited | Real estate | 1991 |
| Larry's Pizzeria Ltd | Hospitality | 2023 |
| Larryfit & More Limited | Wholesale & retail | 2025 |