| Kingfisher Coaching Limited | Professional & scientific | 2009 |
| Kinnaird Court Management Company Limited | Households | 2008 |
| Kirsty Health Care Ltd | Health & social care | 2018 |
| Kisasi Advisory Firm Ltd | Professional & scientific | 2025 |
| Kitchen 106 Ltd | Hospitality | 2024 |
| KJM Financial Solutions Ltd | Financial services | 2015 |
| Kobane Collective Ltd | Other services | 2019 |
| Koco Reformer Pilates Ltd | Arts & recreation | 2026 |
| Kotek Home Limited | Real estate | 2025 |
| KPH Audit & Assurance Services Ltd | Professional & scientific | 2008 |
| KR Joinery Services Limited | Construction | 2019 |
| Krex Ltd | Construction | 2020 |
| Kroncorp Consulting Limited | Professional & scientific | 2022 |
| Kroncorp Limited | Real estate | 2022 |
| KRU Management Ltd | Administrative & support | 2014 |
| Krupa Bros & SON Limited | Manufacturing | 2001 |
| Krypton Limited | Real estate | 1981 |
| KT Property Enterprise Ltd | Real estate | 2025 |
| Kt.Food Limited | Hospitality | 2025 |
| Kudhva Kanvas Ltd | Manufacturing | 2020 |
| Kudhva West Ltd | Extraterritorial | 2016 |
| Kurdish Barber Shop Wirral Ltd | Other services | 2022 |
| Kymnastics Ltd | Education | 2025 |
| L & L Autotech Centre Ltd | Wholesale & retail | 2019 |
| L J Building & Construction Ltd | Construction | 2024 |
| LA Defia Meathouse Ltd | Hospitality | 2025 |
| Labbabe.Uk Ltd | Wholesale & retail | 2026 |
| Labels 'N' Signs Limited | Manufacturing | 2013 |
| Lacerta Leisure Ltd | Other services | 2025 |
| Lambeth Court Management (Hoylake) Limited | Households | 1994 |
| Landmark Roofing and Construction Ltd | Construction | 2026 |
| Lasmika Limited | Wholesale & retail | 2025 |
| Lava Kebab House Ltd | Hospitality | 2025 |
| Lavish Poverty Ltd | Wholesale & retail | 2019 |
| Laviya Cafe Ltd | Hospitality | 2026 |
| Law Costing Limited | Professional & scientific | 2000 |
| Law Engineering Limited | Manufacturing | 2017 |
| Lazy Landlord Ltd | Hospitality | 2023 |
| LBC Group Ltd | Wholesale & retail | 2021 |
| LBO Holdings Limited | Financial services | 2024 |
| LC Pipe Solutions Ltd | Manufacturing | 2026 |
| LDP Cards Ltd | Wholesale & retail | 2026 |
| LDR Electrical North West Limited | Manufacturing | 2019 |
| LDW Ventilation Ltd | Construction | 2026 |
| Lead Logik Ltd | Professional & scientific | 2025 |
| Lean Consultancy (NW) Ltd | Real estate | 2013 |
| Leaner Life Coaching Ltd | Education | 2024 |
| Leasowe Boost Store Limited | Wholesale & retail | 2024 |
| Leasowe Road Maintenance Limited | Households | 1971 |
| Leathercom Limited | Wholesale & retail | 2010 |
| LEE Butler Events Ltd | Arts & recreation | 2017 |
| LEE Butler Ltd | Extraterritorial | 2017 |
| LEE Shingler Consultancy Ltd | Professional & scientific | 2013 |
| Legal Library Ltd | Information & communication | 2019 |
| Leisure Coin Limited | Arts & recreation | 1991 |
| Lekker Bites Limited | Wholesale & retail | 2020 |
| Lemmingtons GF Ltd | Hospitality | 2025 |
| Lenkel Holdings Limited | Extraterritorial | 2015 |
| Lenkel Properties Ltd | Real estate | 2026 |
| Lestan Ltd | Construction | 2025 |
| Leverhulme Hotel & Spa Limited | Hospitality | 2008 |
| LHG Design Ltd | Professional & scientific | 2016 |
| LHG Projects Ltd | Professional & scientific | 2014 |
| Libra Cargo Ltd | Transport & logistics | 2021 |
| Light Factory Limited | Information & communication | 2006 |
| Lighthouse Lettings (NW) Limited | Real estate | 2017 |
| Lighthouse Motors Limited | Wholesale & retail | 2024 |
| Lighting Aftercare Limited | Construction | 2022 |
| Lima & Toucan Ltd | Real estate | 2024 |
| Limbo and Ginger Limited | Arts & recreation | 2020 |
| Lineside Vegetation Management Ltd | Professional & scientific | 2026 |
| Linesixcomps Ltd | Administrative & support | 2025 |
| Lingdale Court (West Kirby) Limited | Households | 1994 |
| Link Properties Limited | Real estate | 1991 |
| Linkman-Systems.Com Ltd | Manufacturing | 2022 |
| Linnex Systems Ltd | Construction | 2016 |
| Lira Craft Creations Ltd | Manufacturing | 2024 |
| Liscard Community Links CIC | Education | 2023 |
| Liscard Corner Shop Ltd | Wholesale & retail | 2022 |
| Liscard Food Ltd | Hospitality | 2025 |
| Liscard Nice Kebabs Ltd | Hospitality | 2022 |
| Literally Productions Limited | Information & communication | 2013 |
| Little Angels (Cheshire) Limited | Education | 2004 |
| Little Angels (ST Helens) Limited | Health & social care | 2015 |
| Little Cherubs Day Nursery (Birkenhead) Ltd | Education | 2008 |
| Little Lodge Day Care Limited | Education | 2017 |
| Little Loves Playroom & Cafe Ltd | Hospitality | 2026 |
| Little Rainbows Day Nursery Limited | Education | 2006 |
| Live Better Lettings Ltd | Real estate | 2025 |
| Liverpool Murugan Temple Ltd | Administrative & support | 2016 |
| Liverpool Signs & Neon Ltd | Construction | 2014 |
| LLE Engineering Ltd | Professional & scientific | 2025 |
| Lloyd Design Creative Services Limited | Arts & recreation | 2014 |
| Lloyds Container Services Limited | Transport & logistics | 2008 |
| LM Eco Ltd | Professional & scientific | 2025 |
| LM Pluriversal Works Limited | Professional & scientific | 2026 |
| LMS001 Ltd | Wholesale & retail | 2020 |
| LNM Living Ltd | Households | 2024 |
| Local Prime Store Ltd | Wholesale & retail | 2024 |
| Locker Room Barbers Ltd | Other services | 2025 |