| Link Care Solutions Limited | Health & social care | 2016 |
| Lion Healthcare Limited | Health & social care | 2015 |
| Lipoloft Limited | Other services | 2020 |
| Liquorice Head Spa and SMP Ltd | Other services | 2025 |
| Lisa Entwistle Management Ltd | Professional & scientific | 2023 |
| Little Blue Sky Services Limited | Other services | 2026 |
| Little Panda's Pre-School Limited | Education | 2012 |
| Litune Music Group Limited | Arts & recreation | 2025 |
| Liverpool Scenic Workshops LLP | | 2013 |
| Livesey's Accountants and Business Advisers Limited | Professional & scientific | 2012 |
| Living Manchester Limited | Real estate | 2019 |
| Living World Events Ltd | Administrative & support | 2013 |
| Liviu Moldovan Limited | Wholesale & retail | 2024 |
| Ljmp Ltd | Real estate | 2026 |
| LJP Tiger Limited | Wholesale & retail | 2023 |
| LJS Transport & Logistics Ltd | Transport & logistics | 2025 |
| LL Civils Ltd | Construction | 2025 |
| Lloyds Energy Ltd | Administrative & support | 2011 |
| Lmmak Ltd | Transport & logistics | 2018 |
| LN Insulation & Fire Stopping Ltd | Construction | 2020 |
| Locals Store Ltd | Wholesale & retail | 2025 |
| Lofthouse Floors Ltd | Construction | 2025 |
| Lofting Services North West Limited | Manufacturing | 1996 |
| Logis Property Ltd | Real estate | 2020 |
| Lomas GAS Services Ltd | Construction | 2022 |
| Longmuir Wild Consulting Limited | Information & communication | 2007 |
| Loom & Leaf Limited | Wholesale & retail | 2025 |
| Lord, COX & Salt LLP | | 2023 |
| Lorenzo-Alini Ltd | Wholesale & retail | 2016 |
| Lotus Electrolysis Ltd | Other services | 2022 |
| Lou-Syd Studios Limited | Information & communication | 2025 |
| Louise Fletcher Limited | Other services | 2015 |
| Louise Perry Illustration Ltd | Professional & scientific | 2018 |
| LQ Dining Ltd | Hospitality | 2020 |
| LR Roofing & Building Contractors Limited | Construction | 2021 |
| LS Trading Mc/R Ltd | Wholesale & retail | 2013 |
| LSS Petrol Forecourts Consultant Ltd | Construction | 2017 |
| Lucky Star M/Cr Ltd | Administrative & support | 2017 |
| Lukasik Developments Ltd | Real estate | 2026 |
| Lumber Bros Ltd | Wholesale & retail | 2017 |
| Lunaspace Ltd | Information & communication | 2018 |
| LUX Seat Ltd | Wholesale & retail | 2024 |
| Luxe Collections Ltd | Hospitality | 2025 |
| Luxe Travel Services Ltd | Transport & logistics | 2019 |
| Luzley Developments Limited | Construction | 2017 |
| Lvlz Ltd | Wholesale & retail | 2025 |
| Lyndhurst Care Ltd | Health & social care | 2023 |
| Lynwood Prestige Homes Limited | Construction | 2007 |
| Lytham Court (Management) Limited | Real estate | 1989 |
| Lytility Limited | Administrative & support | 2025 |
| M & B O'Connor Limited | Construction | 1995 |
| M a Turner Haulage Contractor Limited | Transport & logistics | 2006 |
| M and F Roofing NW Ltd | Construction | 2023 |
| M Awan Ltd | Wholesale & retail | 2024 |
| M Fone and Co Limited | Financial services | 2017 |
| M Tech Electrical Services Ltd | Construction | 2019 |
| M&A Research Services Ltd | Professional & scientific | 2000 |
| M&A Tradax Limited | Wholesale & retail | 2024 |
| M&C Systems Ltd | Construction | 2012 |
| M&G 69 Ltd | Transport & logistics | 2023 |
| M&R Insulation Services Limited | Construction | 2018 |
| M&S Garage Ltd | Wholesale & retail | 2018 |
| M. a. Rashid Properties Ltd | Real estate | 2019 |
| M.A 1LTD Ltd | Wholesale & retail | 2024 |
| M.F.P Electrical Services Limited | Construction | 2018 |
| M1 Auto Lease Limited | Administrative & support | 2018 |
| M6 Waste Ltd | Water & waste | 2023 |
| MA & SON Traders & Co Limited | Wholesale & retail | 2021 |
| Maan Enterprises Limited | Wholesale & retail | 2017 |
| Macarius Superstore Ltd | Wholesale & retail | 2026 |
| Macbar Developments Ltd | Construction | 2006 |
| Macey Dolls Ltd | Other services | 2021 |
| Maclaren Group Limited | Financial services | 2009 |
| MAD About Trees Limited | Agriculture & fishing | 2012 |
| Made by Mortals CIC | Arts & recreation | 2014 |
| Madina Gloves Ltd | Wholesale & retail | 2023 |
| Magaliesburg Medicare Limited | Other services | 2014 |
| Magna Energy Ltd | Construction | 2024 |
| Mahmood Trading Limited | Construction | 2015 |
| MAID2SPARKLE Cleaning LLP | | 2015 |
| Maimackay Properties Ltd | Real estate | 2026 |
| Maine Electrical Services Limited | Construction | 2012 |
| Maison Revere Limited | Other services | 2021 |
| Maja Development Ltd | Administrative & support | 2017 |
| MAK Global Consultants Ltd | Professional & scientific | 2024 |
| MAK MCR Ltd | Transport & logistics | 2019 |
| MAK Properties BFD Ltd | Real estate | 2025 |
| Maki TC Limited | Wholesale & retail | 2025 |
| Makki Cart Limited | Wholesale & retail | 2026 |
| Malana Ltd | Wholesale & retail | 2023 |
| Malhotra Ventures Limited | Wholesale & retail | 2025 |
| Maliha Limited | Administrative & support | 2015 |
| Malik 07 Ltd | Other services | 2014 |
| Malik Barber Limited | Other services | 2026 |
| Mamma MIA Restaurant (Hollingworth) Ltd | Hospitality | 2009 |
| Mammoth Events Limited | Arts & recreation | 2012 |
| Mammoth Signs Ltd | Professional & scientific | 2013 |
| Mamra Limited | Health & social care | 2018 |
| Manacare Foundation | Administrative & support | 2004 |
| Manafa Supplies Limited | Wholesale & retail | 2025 |