| LJ Williams Property Group Ltd | Construction | 2025 |
| LJB Services Ltd | Real estate | 2025 |
| Ljc-Commercial Ltd | Wholesale & retail | 2025 |
| LJH Echo Ltd | Public administration | 2025 |
| LJK Psych-Health Limited | Health & social care | 2023 |
| LKJ Mortgages Limited | Financial services | 2023 |
| LKL Family Support and Assessment Services Ltd | Health & social care | 2025 |
| LKP Properties Limited | Households | 2025 |
| LL Properties & Investments Limited | Construction | 2026 |
| Lloyd Consultancy Limited | Health & social care | 2012 |
| Lloyddistribution Ltd | Wholesale & retail | 2024 |
| LM Estates (Wirral) Ltd | Real estate | 2020 |
| LM Plant Services Ltd | Manufacturing | 2023 |
| LMC Welding Ltd | Professional & scientific | 2024 |
| Lmfusion Ltd | Professional & scientific | 2026 |
| LMQ Accounting Services Ltd | Professional & scientific | 2023 |
| LNM Consulting Limited | Professional & scientific | 2010 |
| LNR Plastering Services Ltd | Construction | 2022 |
| Load & Lock Ltd | Administrative & support | 2012 |
| Local Media Publications Limited | Information & communication | 2016 |
| Locjones Developments Ltd | Real estate | 2025 |
| Lock & Stock Limited | Professional & scientific | 2024 |
| Lock-Ups Storage Limited | Transport & logistics | 2018 |
| Lockgate Coffee House Limited | Hospitality | 2017 |
| Locumline Ltd | Health & social care | 2023 |
| Loerie Ltd | Information & communication | 2024 |
| Logantor Limited | Transport & logistics | 1989 |
| Logical Control Systems Ltd | Professional & scientific | 2017 |
| Logical Therapy Solutions Limited | Education | 2016 |
| Logun Composites Ltd | Manufacturing | 2022 |
| Logun Plant Ltd | Manufacturing | 2022 |
| Lohaf Ltd | Information & communication | 2021 |
| Lola Group Limited | Construction | 2025 |
| Lomuarredi Ltd | Wholesale & retail | 2018 |
| Loneminded Ltd | Information & communication | 2022 |
| Longview (Heswall) Management Ltd | Households | 2016 |
| Lordvine Limited | Extraterritorial | 1975 |
| Lorraine Rogers Ltd | Professional & scientific | 2022 |
| Lorrose Limited | Real estate | 1974 |
| Losiento Limited | Professional & scientific | 2009 |
| Lottiedoddwirral Ltd | Hospitality | 2025 |
| Lotus Electrical Contractors Limited | Construction | 2009 |
| Lotus Gardens Limited | Administrative & support | 2023 |
| Loughrey & Co Ltd | Administrative & support | 2003 |
| Louise Fudge Hair and Beauty Limited | Other services | 2017 |
| Louise White Candles Limited | Other services | 2023 |
| Love Bebington CIC | Other services | 2022 |
| Love Chester Magazine Ltd | Information & communication | 2017 |
| Love to Care Home Care Northwest Ltd | Health & social care | 2017 |
| Love to Care Ltd | Health & social care | 2016 |
| LOVE2VAPE Ltd | Wholesale & retail | 2023 |
| Lovell Consultancy Limited | Information & communication | 2024 |
| LOW Heels Limited | Wholesale & retail | 2018 |
| Lowacre Limited | Real estate | 1986 |
| LPE Electrical Limited | Construction | 2026 |
| LPF Estates Ltd | Real estate | 2024 |
| LPP Property Investments Ltd | Real estate | 2024 |
| Lppt Property Investments Ltd | Real estate | 2025 |
| LPS Mechanical Engineering Ltd | Professional & scientific | 2024 |
| LQ Consultancy Limited | Health & social care | 2016 |
| LR Technology and Information Ltd | Information & communication | 2011 |
| LRB Plumbing Solutions Ltd | Construction | 2022 |
| LRC Properties Limited | Real estate | 2026 |
| LRH Property Limited | Real estate | 2020 |
| LRP Tickets Ltd | Arts & recreation | 2025 |
| LS Accountants Ltd | Professional & scientific | 2024 |
| LS Associates Ltd | Professional & scientific | 2023 |
| LS Contractors 2025 Ltd | Other services | 2025 |
| LS NDT Limited | Professional & scientific | 2013 |
| LS Properties International Ltd | Real estate | 2024 |
| LS Property Portfolio Limited | Real estate | 2020 |
| LS Services International Ltd | Professional & scientific | 2025 |
| LTB Construction and Engineering Limited | Professional & scientific | 2016 |
| LTC Global Consultancy Ltd | Administrative & support | 2024 |
| Ltcuk Ltd | Professional & scientific | 2019 |
| Ltd SVV Ltd | Real estate | 2020 |
| LTJ Couriers Ltd | Transport & logistics | 2022 |
| Lucas Smith Property Limited | Households | 2024 |
| Lucasso Ltd | Administrative & support | 2007 |
| Lucid MTB Ltd | Wholesale & retail | 2025 |
| Lucy Usher Ltd | Professional & scientific | 2025 |
| Lucy's Music Time Ltd | Education | 2022 |
| Ludgate Medical Limited | Health & social care | 2022 |
| Ludo Marketing Limited | Professional & scientific | 2023 |
| Luit Healthcare Limited | Health & social care | 2017 |
| Lujen Developments Ltd | Construction | 2021 |
| Luka Property Investments Limited | Real estate | 2023 |
| Luke Simi Limited | Financial services | 2007 |
| Luke Taylor Ltd | Professional & scientific | 2026 |
| Lulu Apple Limited | Arts & recreation | 2024 |
| Luma Fibre Limited | Information & communication | 2026 |
| Lumberg Construction Consultancy Limited | Construction | 2020 |
| Lumenjuve Ltd | Wholesale & retail | 2021 |
| Lumi Place C.I.C. | Wholesale & retail | 2023 |
| Lumiere Cinema Limited | Extraterritorial | 2022 |
| Luminous Television Limited | Information & communication | 2010 |
| Lumis Education Limited | Education | 2026 |
| Lumivence International Ltd | Hospitality | 2025 |
| Luna Project Ltd | Real estate | 2023 |
| Lunaform Ltd | Wholesale & retail | 2026 |