| Lake District Pizza Company Ltd | Hospitality | 2024 |
| Lake District Property Portfolio LLP | | 2018 |
| Lake District Web Services Limited | Information & communication | 2019 |
| Lake Life Apparel Limited | Wholesale & retail | 2024 |
| Lakeland Analytics Ltd | Information & communication | 2014 |
| Lakeland Bake Limited | Manufacturing | 2005 |
| Lakeland Bespoke Interiors Ltd | Construction | 2014 |
| Lakeland Construction Ltd | Construction | 2024 |
| Lakeland Design Ltd | Administrative & support | 2017 |
| Lakeland Driveways Limited | Construction | 2021 |
| Lakeland Equities Ltd | Construction | 2025 |
| Lakeland Fabrics Ltd | Manufacturing | 2019 |
| Lakeland Fleet Management Limited | Administrative & support | 2017 |
| Lakeland Furniture Limited | Wholesale & retail | 2023 |
| Lakeland Granite Limited | Wholesale & retail | 2010 |
| Lakeland Inhouse Interiors Limited | Construction | 2012 |
| Lakeland Kitchen and Bathroom Installations Ltd | Construction | 2023 |
| Lakeland Lighting and Power, Electrical Contractors Limited | Construction | 2025 |
| Lakeland Outbound Ltd | Health & social care | 2024 |
| Lakeland Panorama Ltd | Hospitality | 2021 |
| Lakeland Trading Limited | Wholesale & retail | 2017 |
| Lakes & Lancs Driveways Limited | Construction | 2025 |
| Lakes and Borders Leisure Limited | Hospitality | 2025 |
| Lakes Decking Limited | Construction | 2014 |
| Lakes Estates Property Services Limited | Real estate | 2022 |
| Lakes Holiday Limited | Hospitality | 2016 |
| Lakes Limited | Education | 2020 |
| Lakes Outdoor Adventure Limited | Arts & recreation | 2016 |
| Lakes Pods Limited | Construction | 2020 |
| Lakes Retreats Ltd | Real estate | 2022 |
| Lakeside Build Ltd | Construction | 2023 |
| Lakesiders Limited | Hospitality | 2022 |
| Lakesman Events Ltd | Arts & recreation | 2017 |
| Lakinson Ltd | Transport & logistics | 2025 |
| Lakshmi Srinivasa Limited | Health & social care | 2019 |
| Lamb Street (Carlisle) Limited | Real estate | 1990 |
| Lambert-Gill Joinery Limited | Construction | 2017 |
| Lamont Pridmore Limited | Professional & scientific | 2007 |
| Lancashire ALE and Food House Limited | Hospitality | 2017 |
| Landform Landscaping Ltd | Administrative & support | 2020 |
| Landxuk Ltd | Real estate | 2026 |
| Lanikan Ltd | Real estate | 2024 |
| Lansdowne Close (Carlisle) Management Company Limited | Households | 2022 |
| Laser X FAB Limited | Other services | 2026 |
| Lash & Brow North Ltd | Other services | 2026 |
| Lash Glamor Ltd | Wholesale & retail | 2022 |
| Latonix Ltd | Wholesale & retail | 2025 |
| Lattimer Homes | Construction | 2001 |
| Lattimer Homes (Cumbria) Limited | Real estate | 2005 |
| Laura Cadman Ltd | Administrative & support | 2019 |
| Laurel Close Management Limited | Extraterritorial | 2014 |
| Laurel Place (Ulverston) Management Company Limited | Real estate | 2021 |
| Laurr Ltd | Transport & logistics | 2025 |
| Laversdale Timber Co. Ltd | Manufacturing | 1999 |
| Lawson Design Ltd | Professional & scientific | 2019 |
| Lawson Engineers Limited | Manufacturing | 1984 |
| LAY Solutions Ltd | Construction | 2017 |
| Layersix Digital Limited | Information & communication | 2026 |
| Lazlio Limited | Hospitality | 1993 |
| Lazonby Terrace Limited | Households | 1999 |
| LB Commercial Services Limited | Wholesale & retail | 2022 |
| LC Car Sales Carlisle Ltd | Wholesale & retail | 2023 |
| LCM Bars Ltd | Hospitality | 2018 |
| LE Gall Ltd | Hospitality | 2022 |
| Leach-Ross and Associates Limited | Administrative & support | 2010 |
| Leap the Crowd Ltd | Professional & scientific | 2020 |
| Learn @ Cybercafe Limited | Information & communication | 2004 |
| Learn Maths Online Ltd | Education | 2025 |
| Learning Performance Training Limited | Administrative & support | 2003 |
| Leavers' Day Ltd | Information & communication | 2026 |
| Lebelle Properties Ltd | Real estate | 2024 |
| LEE Mckean Limited | Information & communication | 2003 |
| LEE Sinkinson Ltd | Extraterritorial | 2024 |
| LEE Sinkinson Services Ltd | Real estate | 2024 |
| Lehmanbush Ltd | Extraterritorial | 2024 |
| Leipers Ltd | Water & waste | 2025 |
| Leisurematic Limited | Administrative & support | 2006 |
| Lemare Consulting Limited | Professional & scientific | 2010 |
| Lensnectar Aerofilm Limited | Information & communication | 2014 |
| Lensnectar Limited | Information & communication | 2014 |
| Lenticularis Limited | Hospitality | 2017 |
| LEO Electrical Services Ltd | Construction | 2018 |
| Leomany Private Limited | Transport & logistics | 2025 |
| Leonshire Limited | Extraterritorial | 2012 |
| Leslie (Carlisle) Limited | Hospitality | 1984 |
| Leslie Company Limited | Professional & scientific | 1984 |
| Lester's Recruitment Ltd | Administrative & support | 2023 |
| Let's Go Driving School Limited | Education | 2019 |
| Letsmove First Properties Ltd | Real estate | 2026 |
| Level UP Scaffolding NW Ltd | Construction | 2024 |
| Lewis Brown Joinery Ltd | Construction | 2026 |
| Lewis Deliveries Ltd | Transport & logistics | 2022 |
| Lewisknightsmusic Ltd | Information & communication | 2026 |
| Lewmac Bars Ltd | Hospitality | 2024 |
| LG Carlisle Ltd | Hospitality | 2022 |
| LH Residential Limited | Households | 1994 |
| LH Utilities Ltd | Professional & scientific | 2019 |
| Liaison International Limited | Manufacturing | 2018 |
| Liam Irving Property Ltd | Real estate | 2022 |
| Liberate Property Rentals Limited | Real estate | 2020 |