| Lloyd Crossan Consultancy Ltd | Professional & scientific | 2016 |
| Lloyd Crossan International Risk Limited | Administrative & support | 2019 |
| Lloyd Crossan Technologies Limited | Administrative & support | 2022 |
| LLS Services (Cheshire) Limited | Administrative & support | 2009 |
| LM CSO Services Ltd | Public administration | 2024 |
| LMH Property Solutions Ltd | Real estate | 2026 |
| LMJ Joinery Ltd | Construction | 2026 |
| LMS Recruitment Services Ltd | Administrative & support | 2021 |
| LMY Investments Ltd | Financial services | 2018 |
| Local Appliance Rentals (Redcar & Cleveland) Limited | Administrative & support | 2017 |
| Lock Post Production Ltd | Information & communication | 2018 |
| Locpac Limited | Extraterritorial | 2010 |
| Lodgefields Travel Ltd | Administrative & support | 2008 |
| LOE Bar Developments Ltd | Real estate | 2021 |
| Logistics Project Consultancy Limited | Professional & scientific | 2020 |
| Loki Medicals Ltd | Health & social care | 2023 |
| Lollipop Rocks Ltd | Professional & scientific | 2019 |
| London Big Picture Ltd | Information & communication | 2021 |
| London General Insurance Company Limited | Financial services | 1984 |
| London Graphic Centre Limited | Professional & scientific | 2007 |
| London's Barbers Limited | Other services | 2024 |
| Longford Dried Flowers Limited | Wholesale & retail | 2013 |
| Loose Moose Production Group Limited | Professional & scientific | 2026 |
| Lorde Solutions Ltd | Information & communication | 2021 |
| Lorenquicktrans Ltd | Transport & logistics | 2025 |
| Lorryloader Training Limited | Construction | 2016 |
| Lost Mary (Crewe) Ltd | Wholesale & retail | 2023 |
| Lotus Beauty Ltd | Extraterritorial | 2012 |
| Loud Properties Ltd | Real estate | 2024 |
| Louise Cuppello Photography Ltd | Professional & scientific | 2018 |
| Love Food Heaven Limited | Wholesale & retail | 2013 |
| Love Lane Estates Ltd | Real estate | 2019 |
| Loved Used Cars Limited | Wholesale & retail | 2024 |
| Loveleigh Creations Limited | Professional & scientific | 2024 |
| Lowe Financial Solutions Ltd | Financial services | 2024 |
| Lowen Escapes Ltd | Real estate | 2026 |
| Lower Road Widnes Limited | Financial services | 2024 |
| Lowkey Supply Ltd | Wholesale & retail | 2026 |
| Loyaltip Ltd | Information & communication | 2019 |
| LPD Consultancy Ltd | Professional & scientific | 2016 |
| Lphd Group Ltd | Real estate | 2026 |
| Lpjd Limited | Financial services | 2023 |
| LRF Horizon Limited | Professional & scientific | 2025 |
| LSC Social Care Limited | Health & social care | 2022 |
| LTE Property Limited | Real estate | 2024 |
| Lu&Clau Ltd | Transport & logistics | 2019 |
| Lucarlo Cards Limited | Wholesale & retail | 2026 |
| Luchian Consulting Limited | Information & communication | 2018 |
| Lucksy Competitions Ltd | Arts & recreation | 2026 |
| Lucky Dips Competitions Ltd | Arts & recreation | 2025 |
| Lucky Properties Crewe Limited | Real estate | 2017 |
| Lucy Powell Hair Ltd | Other services | 2023 |
| Lukas Trading Ltd | Manufacturing | 2025 |
| Luma Fitness Ltd | Real estate | 2021 |
| Luna L Property Holdings Limited | Financial services | 2022 |
| LUP Express Ltd | Transport & logistics | 2019 |
| Lustre Cleaning Services Ltd | Administrative & support | 2026 |
| Lutwyche Retail Limited | Wholesale & retail | 2015 |
| Lutwyche Workshop Limited | Manufacturing | 2015 |
| LUX Cheshire Limited | Transport & logistics | 2021 |
| Luxe Building Solutions Ltd | Construction | 2022 |
| Luxe Craft Interiors Ltd | Manufacturing | 2024 |
| Luxe Plumbing & Heating Ltd | Construction | 2024 |
| Luxsos Limited | Wholesale & retail | 2024 |
| Luxury Life Ltd | Other services | 2017 |
| LXL Car Repairs Limited | Wholesale & retail | 2020 |
| Lymph Wellness Group Limited | Other services | 2025 |
| Lynseylovesinc. Limited | Other services | 2013 |
| Lynton Finance Limited | Financial services | 2006 |
| Lyon Accountants Limited | Professional & scientific | 2019 |
| Lyons Rail Engineering Limited | Manufacturing | 2014 |
| M & J Resource Consultant Ltd | Administrative & support | 2017 |
| M & K Interiors Limited | Construction | 2026 |
| M a OLE Ltd | Construction | 2019 |
| M J Allden Electrical Limited | Construction | 2007 |
| M J Harris Services Limited | Wholesale & retail | 2016 |
| M Lewis Ice Cream Limited | Hospitality | 2022 |
| M N L Limited | Professional & scientific | 1998 |
| M R Dawson Upholstery Ltd | Manufacturing | 2025 |
| M Salt Limited | Construction | 2013 |
| M W Wrench Limited | Construction | 2017 |
| M Wood Construction Services Ltd | Construction | 2015 |
| M&P Engineering Services Ltd | Manufacturing | 2019 |
| M-Sec Compliance Solutions Ltd | Information & communication | 2025 |
| M. G. Carter Construction Limited | Construction | 2014 |
| M.A Motor Group Ltd | Wholesale & retail | 2021 |
| M.D.O Groundworks Ltd | Construction | 2025 |
| M.E Lettings Ltd | Real estate | 2026 |
| M.J. Ashford Consulting Limited | Professional & scientific | 2017 |
| M1 Corner Shop Limited | Wholesale & retail | 2017 |
| M40 Connect Limited | Construction | 2026 |
| M62 Textiles Limited | Wholesale & retail | 2024 |
| MAC Transport Services Ltd | Transport & logistics | 2021 |
| Macari Property Management Ltd | Real estate | 2025 |
| Macclesfield Vintage Machinery Club Limited | Arts & recreation | 2004 |
| Mackendan Property Ltd | Construction | 2021 |
| Mackenzie Goldberg Johnson Limited | Administrative & support | 2004 |
| Mackle Holdings Ltd | Financial services | 2021 |
| Mackle Legal Ltd | Professional & scientific | 2018 |
| Macon Court (Crewe) Limited | Households | 1987 |