| LMG Autos Ltd. | Wholesale & retail | 2022 |
| LNM Ltd | Wholesale & retail | 2025 |
| Localbizz AI Ltd | Information & communication | 2025 |
| Love’S Homes Ltd | Construction | 2024 |
| LRM Properties Ltd | Households | 2021 |
| LSB Employment Ltd | Other services | 2017 |
| Ludom Ltd | Wholesale & retail | 2013 |
| M & P Electrical Limited | Construction | 2006 |
| M S K Civils Ltd | Construction | 2023 |
| M T S Investment Ltd | Wholesale & retail | 2018 |
| M&D Welding and Fabrication Ltd | Manufacturing | 2024 |
| M&M Car Wash Ltd | Wholesale & retail | 2014 |
| MAD Spaniel Ltd | Professional & scientific | 2025 |
| Magicmist Ltd | Wholesale & retail | 2024 |
| Magnetar Events Ltd | Arts & recreation | 2020 |
| Maisy's Deli Ltd | Hospitality | 2023 |
| Make My House Your Home Limited | Real estate | 2025 |
| Mark Muir Building Services Ltd | Construction | 2007 |
| Mark Williams Snooker Limited | Arts & recreation | 2011 |
| Mark Williams Snooker Shop Limited | Wholesale & retail | 2023 |
| Masonry & Structural Services Limited | Construction | 1996 |
| Matt Builder Rendering Specialists Ltd | Construction | 2023 |
| Mccarthys (Ebbw Vale) Limited | Other services | 2014 |
| Melisive Limited | Transport & logistics | 2024 |
| Merthyr & Gwent Forklift Training Ltd | Education | 2015 |
| Metallcon Ltd | Manufacturing | 2025 |
| Meyra Food Ltd | Hospitality | 2025 |
| Mhda CIC | Arts & recreation | 2023 |
| MJ Jones Brickwork Ltd | Construction | 2026 |
| MJ Properties and Lettings Ltd | Real estate | 2021 |
| MJL City Properties Limited | Real estate | 2025 |
| MK Property Experts Ltd | Real estate | 2025 |
| MM Carpentry Plus Ltd | Construction | 2014 |
| Mobile Tech Collect Ltd. | Other services | 2018 |
| Monster Mechanics Ltd | Wholesale & retail | 2023 |
| Moregrove Alexander Investments Limited | Professional & scientific | 2018 |
| Morton Winsor Limited | Information & communication | 2012 |
| Moses and Sons Ltd | Health & social care | 2021 |
| MPB Chilled Logistics Limited | Transport & logistics | 2023 |
| MPS Cleaning Limited | Administrative & support | 2020 |
| Msib Ltd | Professional & scientific | 2013 |
| Munn Accounting Ltd | Professional & scientific | 2016 |
| Myecoprint Ltd | Wholesale & retail | 2022 |
| Mypurple Limited | Health & social care | 2018 |
| N K Perrett Plumbing & Heating Ltd | Construction | 2022 |
| Nantyglo Action Group (NAG) | Agriculture & fishing | 2006 |
| Nantyglo Football Club CIC | Arts & recreation | 2019 |
| Nantyglo OAP & Community Hall CIC | Other services | 2021 |
| Nantyglo RFC Fields and Facilities Limited | Arts & recreation | 2019 |
| Nantyglo Rugby Football Club Limited | Other services | 2016 |
| Nasim Consulting Limited | Information & communication | 2002 |
| National Bar Fitters & Upholstery Ltd | Manufacturing | 2021 |
| Natures Hand Care and Support Limited | Health & social care | 2016 |
| New Forest WPC Ltd | Wholesale & retail | 2025 |
| Next GEN Computing Ltd | Information & communication | 2019 |
| Nigel Sullivan Groundworks and Plant Hire Limited | Construction | 2011 |
| Nikis & JEE Property Limited | Construction | 2025 |
| Norvexa Retail Ltd | Wholesale & retail | 2026 |
| Nova-Clad Roofing & Cladding Solutions Ltd | Construction | 2026 |
| Novelra Clothing Ltd | Wholesale & retail | 2026 |
| NP22 Ltd | Construction | 2015 |
| NP23 Ltd | Wholesale & retail | 2024 |
| NP23 Properties Ltd | Real estate | 2025 |
| NU INK Ltd | Other services | 2019 |
| OCJ Consultancy Ltd | Information & communication | 2023 |
| Odnetafrica Ltd | Information & communication | 2025 |
| Official Player of the Match Ltd | Arts & recreation | 2022 |
| ON the Wire Services Limited | Administrative & support | 2026 |
| One-To-One Advisers Limited | Financial services | 2006 |
| Only Vans and Commercial Vehicles Ltd | Wholesale & retail | 2025 |
| Onya Therapeutics Limited | Professional & scientific | 2020 |
| Opportunity Knox Developments Limited | Real estate | 2019 |
| Oriental Speciality Limited | Manufacturing | 2024 |
| Oriental Specialty Ltd | Manufacturing | 2024 |
| Osmanlar Food Ltd | Hospitality | 2024 |
| Ozmav Ltd | Manufacturing | 2022 |
| P & P Motors Limited | Wholesale & retail | 2025 |
| Pachis Limited | Health & social care | 2011 |
| Panel People (EV) Ltd | Manufacturing | 2026 |
| Panel People Limited | Manufacturing | 2001 |
| Park Place Guest House Limited | Hospitality | 2005 |
| Part Time Leisure Ltd | Wholesale & retail | 2023 |
| Paton Gray Ltd | Real estate | 2021 |
| Paul Paton the Boiler Doctor Limited | Construction | 2015 |
| Paul Strange Limited | Construction | 2014 |
| Pebble Hub Ltd | Health & social care | 2022 |
| Perfect Touch Print Ltd | Manufacturing | 2025 |
| Philden Limited | Manufacturing | 2021 |
| Philip Jones Timber Products Limited | Wholesale & retail | 2003 |
| Phillips Brothers Properties Limited | Real estate | 2024 |
| Pizza Bailey Ltd | Hospitality | 2026 |
| Pizza Plus Food Ltd | Hospitality | 2024 |
| PJ Pet Stores Limited | Wholesale & retail | 2011 |
| Planned Support Services Ltd | Health & social care | 2005 |
| PMA Aerospace Services Ltd | Professional & scientific | 2024 |
| Pmeuk.Com Ltd | Manufacturing | 2013 |
| PNR Pharma Consulting Limited | Professional & scientific | 2012 |
| Pnxt Ltd | Wholesale & retail | 2014 |
| Policy Assist Ltd. | Financial services | 2012 |
| Pomegranate Building Limited | Construction | 2021 |