| KWB Joinery Limited | Construction | 2022 |
| Kwik TIC Limited | Information & communication | 2008 |
| KYK Healthcare Limited | Wholesale & retail | 2005 |
| KYK Holdings Ltd | Real estate | 2019 |
| Kymo Properties Ltd | Real estate | 2006 |
| L & G Hammond Limited | Wholesale & retail | 2015 |
| L & H Property Development Limited | Construction | 2017 |
| L & K Electrical Limited | Construction | 2002 |
| L & M Estate Planning Limited | Financial services | 2020 |
| L & R 2020 Limited | Hospitality | 2026 |
| L a Cunliffe Ltd | Real estate | 2020 |
| L a Engineering (NW) Limited | Manufacturing | 2013 |
| L a T Residential Ltd | Real estate | 2024 |
| L and J Joinery Solutions Ltd | Construction | 2026 |
| L Ascroft Tiling Ltd | Construction | 2014 |
| L Darwin Property Ltd | Real estate | 2025 |
| L G Eco Heating Limited | Construction | 2023 |
| L J Shorthouse Limited | Arts & recreation | 2008 |
| L Miller IR Limited | Arts & recreation | 2024 |
| L R Finance (North West) Limited | Financial services | 2011 |
| L S Glazing Ltd | Construction | 2018 |
| L S H Electrical Solutions Ltd | Construction | 2017 |
| L S Homes Ltd | Construction | 2023 |
| L S Pilling Ltd | Professional & scientific | 2022 |
| L W Electrical Solutions Ltd | Construction | 2023 |
| L W T Contractors Limited | Transport & logistics | 2008 |
| L&K Off-Site Solutions Limited | Manufacturing | 2022 |
| L&L Coatings Ltd | Other services | 2021 |
| L&L Scaffolding Services Ltd Ltd | Construction | 2026 |
| L'Amore Pizza Limited | Hospitality | 2014 |
| L. P. Rail Limited | Construction | 2017 |
| L.Farrell Ltd | Real estate | 2021 |
| L.G.E.C. Limited | Construction | 2014 |
| L.S. Developments Ltd | Real estate | 2002 |
| L.T. Dickinson Training Limited | Education | 2013 |
| L.V. Control Systems Limited | Professional & scientific | 2005 |
| LA Casa DEL Vape and Phone Ltd | Wholesale & retail | 2025 |
| LA Cava International Ltd | Hospitality | 2025 |
| LA Lifting Ltd | Professional & scientific | 2024 |
| LA Loca (ST Helens) Limited | Hospitality | 2018 |
| LA Mamma Pizzeria Ltd | Hospitality | 2020 |
| LA Plumbing and Heating Solutions Limited | Construction | 2024 |
| LA Property & Investments Ltd | Real estate | 2017 |
| LA Van Commercials Ltd | Wholesale & retail | 2026 |
| LAB Decor Ltd | Administrative & support | 2023 |
| Labsko Homes Ltd | Real estate | 2025 |
| Lacanos | Professional & scientific | 2025 |
| Lace and Love Bridal and Prom Ltd | Wholesale & retail | 2024 |
| Ladders and More Limited | Wholesale & retail | 2018 |
| Ladies Empowerment Circle Ltd | Other services | 2024 |
| LAF Reporting Limited | Health & social care | 2021 |
| Lagherta | Professional & scientific | 2023 |
| LAI Fung IT Solutions Limited | Information & communication | 2017 |
| Lakeland 100 Limited | Arts & recreation | 2010 |
| Lakeland Property Holdings Limited | Households | 2022 |
| Lakes & Dales Water Supplies Limited | Water & waste | 2000 |
| Lakoukla X Rolly Ltd | Wholesale & retail | 2023 |
| Lakshami Property Ltd | Real estate | 2024 |
| LAL Communications Limited | Other services | 2026 |
| LAM & KAU Holdings Limited | Real estate | 2021 |
| Lamb's Locum Services Ltd | Wholesale & retail | 2013 |
| Lambda Exteriors Limited | Financial services | 2013 |
| Lambert Consultancy Limited | Administrative & support | 2017 |
| Lambs Aesthetics Ltd | Other services | 2014 |
| Lamshark Ltd | Wholesale & retail | 2022 |
| Lamston Ltd | Administrative & support | 2015 |
| LAN DEC (North West) Limited | Construction | 2013 |
| Lana’S Bubble Carpet Ltd | Administrative & support | 2025 |
| Lancashire Acquisitions Ltd | Real estate | 2012 |
| Lancashire Coaching Partnership Limited | Professional & scientific | 2023 |
| Lancashire DRY Wall Systems Ltd | Construction | 2018 |
| Lancashire Electrical Fire and Security Ltd | Administrative & support | 2014 |
| Lancashire Fire Solutions Ltd | Public administration | 2012 |
| Lancashire Interiors Limited | Construction | 2010 |
| Lancashire Manor Hotel Limited | Hospitality | 2009 |
| Lancaster Farm Close Management Company Ltd | Households | 2024 |
| Lancs & Cumbria Lift Services Ltd | Manufacturing | 2016 |
| Land & Properties Limited | Real estate | 2013 |
| Land of Lashes Ltd | Other services | 2017 |
| Land Trader Ltd. | Real estate | 2001 |
| Land X Tech Limited | Information & communication | 2025 |
| Landlords Farm Equestrian Centre Ltd | Arts & recreation | 2010 |
| Landrum Property Ltd | Real estate | 2025 |
| Landscape Holdco Limited | Professional & scientific | 2018 |
| Landscape Tradeco Limited | Professional & scientific | 2018 |
| Lane Fabrication NW Ltd | Professional & scientific | 2026 |
| Lane Town Planning Ltd | Professional & scientific | 2024 |
| Lang Construction Consultants Limited | Professional & scientific | 2015 |
| Langdale 1955 Limited | Extraterritorial | 2014 |
| Langen Motorcycles International Ltd | Manufacturing | 2020 |
| Langen Motorcycles Ltd | Manufacturing | 2020 |
| Langen Technology Ltd | Manufacturing | 2018 |
| Langfield Properties Ltd | Real estate | 2019 |
| Langley Mere Ltd | Financial services | 2022 |
| Langtech Solutions Limited | Administrative & support | 2018 |
| Langtree Holdings Ltd | Hospitality | 2014 |
| Langtree Landlord Services Limited | Real estate | 2016 |
| Langtree Property Group Limited | Real estate | 2025 |
| Langtree Retail Services Ltd | Wholesale & retail | 2019 |
| Langtree Technical Solutions Limited | Professional & scientific | 2023 |