| Little Bundles of Joy Ltd | Other services | 2016 |
| Little Crickets Nursery Ltd | Health & social care | 2020 |
| Little Learners - Old Chapel Ltd | Health & social care | 2026 |
| Little Nooriyah Ltd | Education | 2022 |
| Live 23 Ltd | Hospitality | 2023 |
| Live and LET Learn Training Associates Ltd | Professional & scientific | 2021 |
| LJK Services Ltd | Construction | 2025 |
| LK Learn & Develop Ltd | Education | 2024 |
| LKM Ltd | Wholesale & retail | 2025 |
| LMJ Mids Ltd | Construction | 2018 |
| LNB Packaging Ltd | Administrative & support | 2024 |
| Loaded Akhz Ltd | Hospitality | 2025 |
| Loaf Actually Ltd | Manufacturing | 2026 |
| Local Auto Body Repairs Ltd | Wholesale & retail | 2022 |
| Local Lock Expert Ltd | Administrative & support | 2020 |
| Logan Trading Business UK Limited | Wholesale & retail | 2012 |
| Logik Properties Limited | Real estate | 2014 |
| Logik Services Limited | Administrative & support | 2005 |
| Logiqworks Limited | Information & communication | 2025 |
| Logisticlly Ltd | Construction | 2019 |
| Lola Joseph Homes Ltd | Real estate | 2023 |
| Look Good Limited | Arts & recreation | 2009 |
| Lorre Consulting Limited | Information & communication | 2014 |
| Lorry Logistics Ltd | Transport & logistics | 2025 |
| LOT Shop Ltd | Wholesale & retail | 2021 |
| Lotif's Limited | Hospitality | 2026 |
| Lotus Point Limited | Hospitality | 2009 |
| Love at First Bite Pizza Ltd | Hospitality | 2024 |
| Love YOU Lots Music Limited | Arts & recreation | 2015 |
| Loveleen Ltd | Transport & logistics | 2024 |
| Loving Care Companion Ltd | Real estate | 2023 |
| LP SD Seven Limited | Wholesale & retail | 2023 |
| LPM Transport Ltd | Transport & logistics | 2024 |
| Lppm Services Ltd | Professional & scientific | 2016 |
| Lqin Ltd | Health & social care | 2024 |
| LSP Consulting Services Ltd | Information & communication | 2024 |
| Lucas Spedition Limited | Transport & logistics | 2019 |
| Lucascleaning Ltd | Administrative & support | 2026 |
| Lucky Pick Ltd | Wholesale & retail | 2025 |
| Luckyshop U.K. Ltd | Wholesale & retail | 2021 |
| Ludy Limited | Transport & logistics | 2024 |
| Luigi Construction and Transport Ltd | Construction | 2021 |
| Luke’S Imports Ltd | Hospitality | 2023 |
| Lume GAS Ltd | Wholesale & retail | 2025 |
| Lumina Enterprises Ltd | Wholesale & retail | 2025 |
| Luna Bliss Limited | Other services | 2024 |
| Luxuria Constructions Ltd | Professional & scientific | 2025 |
| Luxury Kitchens by Broadway Ltd | Manufacturing | 2026 |
| Luxury Moments Birmingham Ltd | Professional & scientific | 2026 |
| LZK Solutions Limited | Transport & logistics | 2014 |
| L’S Beauty Ltd | Other services | 2025 |
| M & J Clothing Ltd | Transport & logistics | 2023 |
| M ALI Choudhry Limited | Wholesale & retail | 2020 |
| M and Sons Property Ltd | Real estate | 2025 |
| M F Bassen Ltd | Real estate | 2023 |
| M J & G Group Ltd | Financial services | 2024 |
| M J Beton Ltd | Construction | 2018 |
| M Jamil & Sons Limited | Wholesale & retail | 2022 |
| M K Sohi Construction Ltd | Construction | 2022 |
| M Khan Halal Meat & Poultry Limited | Wholesale & retail | 2022 |
| M Victoris Transport Ltd | Transport & logistics | 2017 |
| M&A Delivery U.K. Limited | Transport & logistics | 2024 |
| M&B Room Lettings Ltd | Real estate | 2025 |
| M&D Services U.K. Ltd | Other services | 2024 |
| M&M INT Ltd | Wholesale & retail | 2025 |
| M. Hanif and Sons Ltd | Real estate | 2025 |
| M.E.B Consult Ltd | Professional & scientific | 2013 |
| M.M. Transport & Logistics Ltd | Transport & logistics | 2025 |
| M9 Property Management Ltd | Real estate | 2025 |
| MA Electrics Garage Ltd | Wholesale & retail | 2024 |
| MA Secure & Protect Ltd | Administrative & support | 2022 |
| Maac Veterinary Services Limited | Professional & scientific | 2014 |
| Maak Transport Ltd | Transport & logistics | 2021 |
| Macbeth 49 Limited | Health & social care | 2005 |
| Macchinaago Ventures Limited | Wholesale & retail | 2025 |
| Macedo Courier Ltd | Transport & logistics | 2019 |
| Machine & Furniture Ltd | Wholesale & retail | 2022 |
| MACHINERY.22 Ltd | Wholesale & retail | 2020 |
| Madni Ltd | Wholesale & retail | 2025 |
| Madras Eatery Ltd | Hospitality | 2025 |
| MAG Baby Products UK Ltd | Wholesale & retail | 2021 |
| MAG Products UK Limited | Wholesale & retail | 2018 |
| Maga Consultants Ltd | Professional & scientific | 2014 |
| Maga Freelance Tutors Ltd | Education | 2020 |
| Maga Management Limited | Hospitality | 2020 |
| Magadan Trans Ltd | Wholesale & retail | 2016 |
| Mahamadou Touray Solution Ltd | Transport & logistics | 2026 |
| Mahesh Caterers Ltd | Hospitality | 2020 |
| Mahsons Traders Limited | Wholesale & retail | 2024 |
| Maison Essence Trading Ltd | Wholesale & retail | 2025 |
| MAJ Couriers Limited | Transport & logistics | 2018 |
| Majestic Cleaners Ltd | Administrative & support | 2023 |
| Make Good Arts CIC | Education | 2024 |
| Make IT Reel Ltd | Information & communication | 2017 |
| Make Miracle Music Ltd | Information & communication | 2022 |
| Make Share EAT Ltd | Hospitality | 2018 |
| Makeda Consulting Limited | Professional & scientific | 2022 |
| Makeover PM Limited | Construction | 2018 |
| Makiz Ltd | Wholesale & retail | 2025 |
| Malak Market Ltd | Wholesale & retail | 2024 |