| LA Familia Schofield Limited | Professional & scientific | 2022 |
| Label Create Limited | Manufacturing | 2014 |
| Label Planet Limited | Administrative & support | 2003 |
| Laboratory Pathways Ltd | Professional & scientific | 2025 |
| Labyrinthian Ltd | Other services | 2019 |
| Ladies Bootcamp Limited | Arts & recreation | 2024 |
| Ladsoc Limited | Other services | 2025 |
| Lake Rentals Limited | Real estate | 2025 |
| Landigo Limited | Administrative & support | 2019 |
| Landscape Photography Activities Limited | Professional & scientific | 2025 |
| Langdale Trading Limited | Wholesale & retail | 2025 |
| Lanzie Group Property Limited | Real estate | 2019 |
| Latham Adams Limited | Construction | 2005 |
| Latham Agri Ltd | Other services | 2019 |
| Lavender & Hulme Ltd | Real estate | 2020 |
| Lawrence Clinics Ltd | Health & social care | 2016 |
| Layfield & Co Limited | Professional & scientific | 2002 |
| LCG Investment Holdings Ltd | Financial services | 2021 |
| LD Investment Company Ltd | Financial services | 2026 |
| LEA Consultancy Services Limited | Professional & scientific | 1995 |
| LEA Hall Farm Barns Management Limited | Real estate | 2006 |
| LEA Hall Travel Ltd | Administrative & support | 2026 |
| Leather Architect Limited | Extraterritorial | 2012 |
| Lect Limited | Real estate | 2019 |
| LEE a Riley Limited | Real estate | 2017 |
| LEE Matthew Creative Ltd | Professional & scientific | 2015 |
| Legal Help Services Limited | Professional & scientific | 2018 |
| LEOCO2 Futures Ltd | Professional & scientific | 2023 |
| Leopard Brewery TAP Limited | Hospitality | 2013 |
| Lewis's Grottoes Limited | Arts & recreation | 2010 |
| Liberty K9 Training Limited | Other services | 2024 |
| Libiena Ltd | Extraterritorial | 2017 |
| Liburd Electrical Ltd | Construction | 2026 |
| Life Mechanics Ltd | Administrative & support | 2023 |
| Life Symbols Ltd | Wholesale & retail | 2022 |
| Lifestyle Arts and Crafts Limited | Wholesale & retail | 2006 |
| LINES2DESIGNS Ltd | Construction | 2019 |
| Link Motion Ltd. | Professional & scientific | 2014 |
| Lisnic Igor Ltd | Transport & logistics | 2019 |
| Little Angels (Nantwich) Limited | Health & social care | 2012 |
| Little Angels Childcare & Nurseries Limited | Health & social care | 2004 |
| Little Chelsea Health Store Ltd | Wholesale & retail | 2024 |
| Little Oaks Education Ltd | Health & social care | 2025 |
| Living Pure Natural Ltd. | Professional & scientific | 2012 |
| Livsafe Ltd | Manufacturing | 2026 |
| LIZ Almond Aesthetics Ltd | Other services | 2026 |
| Lizzie’S Sweetie Treaties (LST) Ltd | Wholesale & retail | 2025 |
| Lloyds Upvc Limited | Construction | 2020 |
| LNH Carpentry and Joinery Ltd | Construction | 2016 |
| Loftus Construction Limited | Construction | 2002 |
| Loftus FIC Limited | Financial services | 2025 |
| Logic by Design Ltd | Information & communication | 2026 |
| Logic Control Group Ltd | Professional & scientific | 2019 |
| Logistic Experts Limited | Transport & logistics | 2019 |
| Logon Group Ltd | Information & communication | 2020 |
| Logon Ltd | Information & communication | 2021 |
| Longman's Quality Farm Produce Limited | Manufacturing | 2018 |
| Loud and Clear Mobile Microsuction Ltd | Health & social care | 2025 |
| Lovelanefood Ltd | Hospitality | 2025 |
| Lower Farm Barns Ltd | Construction | 2021 |
| LP Financial Limited | Professional & scientific | 2024 |
| LPJ Training and Research Limited | Education | 2022 |
| LSB Building Services Limited | Construction | 2026 |
| LSJ Property Limited | Real estate | 2025 |
| LTM Mouldings Ltd | Manufacturing | 2011 |
| Luapps Limited | Information & communication | 2010 |
| Lucidvista Consulting Limited | Professional & scientific | 2026 |
| Lucky COD Ltd | Real estate | 2025 |
| Luma Nails Liverpool Limited | Other services | 2026 |
| Lundie Electrical Limited | Construction | 2013 |
| Lustrum Retail Limited | Real estate | 2017 |
| Luxsylocks Ltd | Other services | 2025 |
| Luxunique Limited | Manufacturing | 2020 |
| Lyndon Wain Football Coaching Limited | Education | 2026 |
| Lyon Griffiths (Audit and Accounting) Limited | Professional & scientific | 2016 |
| M & B Surfaces Ltd | Construction | 2006 |
| M & N Holdings Limited | Professional & scientific | 1995 |
| M Chantler Share Portfolio Limited | Financial services | 2025 |
| M Farrington Plumbing Ltd | Construction | 2015 |
| M H C Logistics (UK) Limited | Transport & logistics | 2006 |
| M J Law Limited | Agriculture & fishing | 2020 |
| M J Wright Builders Ltd | Construction | 2008 |
| M Law Developments Limited | Real estate | 2016 |
| M Pritchard Ltd | Professional & scientific | 2022 |
| M&J Property Limited | Real estate | 2016 |
| M&M Commercial Lettings Ltd | Real estate | 2025 |
| M&M Rubber Play Surfacing Ltd | Manufacturing | 2017 |
| M. D. Outhwaite & Sons Limited | Construction | 2013 |
| M. Manfredi Ltd | Extraterritorial | 2012 |
| M.A. Swain Central Heating & Plumbing Limited | Construction | 2001 |
| M.A.T.S.I. Limited | Arts & recreation | 2025 |
| M.Bethell Limited | Construction | 2026 |
| M.E. Waterhouse Limited | Manufacturing | 1985 |
| M.I.T Investment Group Limited | Real estate | 2024 |
| M.N.M Healthcare Limited | Financial services | 2008 |
| M22 Properties (Construction) Ltd | Construction | 2025 |
| M22 Properties Ltd | Real estate | 2025 |
| MAC Group Holdings International Ltd | Financial services | 2024 |
| MAC Group Solutions Ltd | Wholesale & retail | 2023 |
| MAC Group Trade Ltd | Wholesale & retail | 2021 |