| Leprino Foods Limited | Manufacturing | 1991 |
| Letpal Consulting Limited | Professional & scientific | 2025 |
| Lets Move Tech Ltd | Information & communication | 2021 |
| Lettyboo Ltd | Wholesale & retail | 2021 |
| LEV8 Limited | Professional & scientific | 2019 |
| Levels Scouting Services Limited | Arts & recreation | 2025 |
| Lexicon Aviation Limited | Professional & scientific | 2016 |
| Lftr Property Ltd | Real estate | 2023 |
| LG Futures EOT Limited | Financial services | 2023 |
| LG Futures Limited | Professional & scientific | 2004 |
| Liam Barlow Investments Limited | Administrative & support | 2024 |
| Liberty Bell Limited | Wholesale & retail | 1996 |
| Liberty Rise Services Limited | Information & communication | 2018 |
| Libertys Luxuries Limited | Other services | 2024 |
| Libra Venture Group Ltd | Wholesale & retail | 2026 |
| Libris Search Ltd | Administrative & support | 2022 |
| Licensed Holdings Limited | Hospitality | 2025 |
| Liddy Carver Limited | Health & social care | 2022 |
| Lievito(Uk) Ltd | Hospitality | 2020 |
| Life Networker Ltd | Other services | 2018 |
| Life's About Food Ltd | Hospitality | 2020 |
| Lifos Ltd | Administrative & support | 2025 |
| Light IT UP Consultants Ltd | Wholesale & retail | 2023 |
| Lighting Contracts Solutions (LCS) Ltd | Wholesale & retail | 2023 |
| Lilly Nail and Beauty Northwich Ltd | Other services | 2024 |
| Lillybella Limited | Manufacturing | 2020 |
| Lily Krznar Ltd | Real estate | 2018 |
| Lime Avenue Supper Bar Ltd | Hospitality | 2024 |
| Limitra Ltd | Financial services | 2024 |
| Linx Source to PAY Solutions Ltd | Professional & scientific | 2017 |
| Lion Lotus Limited | Professional & scientific | 2015 |
| Liquid Solutions (Cheshire) Limited | Arts & recreation | 2009 |
| Litke Wood & Co Limited | Professional & scientific | 2019 |
| Litke Wood Accountancy Services Limited | Professional & scientific | 2012 |
| Litke Wood Company Secretarial Limited | Professional & scientific | 2017 |
| Littledales Management Company Limited | Households | 1995 |
| Littlei Ltd. | Other services | 2022 |
| Littlers Butchers Limited | Manufacturing | 2009 |
| Littlevr Ltd | Real estate | 2024 |
| Livable Limited | Real estate | 2020 |
| Liverpool Thai OIL Ltd | Health & social care | 2025 |
| Livewire Special Events Limited | Administrative & support | 2000 |
| LJK Consultancy Services Limited | Professional & scientific | 2018 |
| LLC Fire Compliance Ltd | Construction | 2026 |
| Lmat Ventures Limited | Real estate | 2025 |
| LMO Properties Limited | Real estate | 2024 |
| Local Government Futures Limited | Extraterritorial | 2009 |
| Locate Property Limited | Administrative & support | 2005 |
| Lochagan Estates Limited | Real estate | 2018 |
| Lock-Tec (UK) Ltd | Professional & scientific | 2008 |
| Lock-Wizard 24 Hour Limited | Construction | 2010 |
| Lockwood Construction Limited | Construction | 2012 |
| London and Manchester Healthcare (Deepdale) Limited | Health & social care | 2014 |
| London and Manchester Healthcare (Fulwood) Limited | Health & social care | 2017 |
| London and Manchester Healthcare (Rudheath) Ltd | Health & social care | 2019 |
| London and Manchester Healthcare (Whittle Hall) Limited | Health & social care | 2015 |
| London and Manchester Healthcare Holdings Ltd | Health & social care | 2021 |
| London Road Property Management Ltd | Real estate | 2017 |
| Long LEA Gardens Management Company Limited | Households | 2018 |
| Longden Taylor Consulting Ltd | Professional & scientific | 2010 |
| Longueville Associates Limited | Information & communication | 2011 |
| Looking Forward Activities Ltd | Health & social care | 2017 |
| Looking Good on Camera Limited | Other services | 2009 |
| Loran Properties Limited | Real estate | 1998 |
| Loss Legal Services Ltd | Financial services | 2014 |
| Lost Industries Limited | Wholesale & retail | 2024 |
| Lothar Properties Limited | Hospitality | 2022 |
| Lots of Pollen Limited | Arts & recreation | 2024 |
| Louder Than Bombs Limited | Construction | 2018 |
| Lovat Green Ltd | Information & communication | 2014 |
| LOW Origin Ltd | Wholesale & retail | 2015 |
| Lowen Solutions Ltd | Professional & scientific | 2017 |
| Loxlay Close (Residents) Management Company Limited | Households | 2024 |
| LR Consultancy & Events Limited | Administrative & support | 2023 |
| LS Driving Limited | Transport & logistics | 2012 |
| LSC Songs Limited | Arts & recreation | 2017 |
| LT Mechanics Limited | Wholesale & retail | 2025 |
| LT Mobile Mechanics Limited | Wholesale & retail | 2024 |
| Lucid Investment Group Ltd | Administrative & support | 2017 |
| Lufe Developments Ltd | Construction | 2015 |
| Luke Brennan Limited | Extraterritorial | 1932 |
| Luminaire Solutions Limited | Information & communication | 2017 |
| Luna Label Ltd | Construction | 2021 |
| Lundon Homes (Acton Bridge) Limited | Real estate | 2020 |
| Lundon Homes (Pickmere) Limited | Construction | 2021 |
| Lundon Homes Limited | Construction | 2018 |
| Lutrom Designs Limited | Manufacturing | 2020 |
| Lutrom Engineering Limited | Professional & scientific | 2021 |
| Lutrom Group Limited | Financial services | 2021 |
| Lutrom Properties Limited | Real estate | 2021 |
| Luxe 24 Limited | Administrative & support | 2024 |
| Luxe Lounge Cheshire Limited | Other services | 2025 |
| LVH Fabrication Ltd | Manufacturing | 2024 |
| LWM Wines Limited | Extraterritorial | 2019 |
| Lynmere Moss Farm Limited | Hospitality | 2015 |
| Lyon Projects Ltd | Administrative & support | 2018 |
| M & JA Ltd | Administrative & support | 2015 |
| M Bailey Electrical Ltd | Construction | 2020 |
| M Hughes Medical Ltd | Health & social care | 2022 |
| M I S Computer Services Limited | Information & communication | 1981 |