| Hamad Arif Ltd | Transport & logistics | 2025 |
| Hayle Enterprises Ltd | Real estate | 2024 |
| Homebuild North Wales Limited | Wholesale & retail | 2024 |
| Illuminated Events Ltd | Administrative & support | 2018 |
| Imperial Windows (Bangor) Ltd | Construction | 2004 |
| Insula Limited | Professional & scientific | 2025 |
| J & S Jones Ltd | Hospitality | 2026 |
| J K E Enterprises Limited | Hospitality | 2012 |
| Jackson Country Property Ltd | Real estate | 2022 |
| Jarvis Jones Joinery Limited | Construction | 2015 |
| Jcnn Holdings Ltd | Extraterritorial | 2016 |
| Jgah Properties Ltd | Real estate | 2022 |
| JGF Associates Ltd | Professional & scientific | 2010 |
| JMCD1 Ltd | Health & social care | 2015 |
| John Greasley Limited | Construction | 1984 |
| Jones Brothers Wind Energy Limited | Extraterritorial | 2013 |
| Karen Taylor Contemporary Art Gallery Limited | Arts & recreation | 2002 |
| Knowles Developments Limited | Construction | 2003 |
| LA Cala MB Limited | Hospitality | 2019 |
| Lance Williams Roofing Ltd | Construction | 2020 |
| Lgah (Wales) Properties Ltd | Real estate | 2023 |
| Lita Leisure Ltd | Arts & recreation | 2020 |
| LJS Property Management Ltd | Real estate | 2019 |
| LJW Lettings Ltd | Real estate | 2022 |
| Llanddwyn Construction NW Ltd | Construction | 2023 |
| Llanfairpwll Distillery Ltd | Manufacturing | 2018 |
| Llechwedd Trading Limited | Wholesale & retail | 1988 |
| Logan UK Limited | Information & communication | 2005 |
| Lucas & Co Estate Agents Ltd | Real estate | 2021 |
| Lunar Property Management Ltd | Real estate | 2020 |
| M D Parry Developers Ltd | Construction | 2014 |
| Maison Luala Limited | Wholesale & retail | 2026 |
| Malone Ltd | Information & communication | 2006 |
| Mannion Management Ltd | Hospitality | 2025 |
| Mapne Ltd | Construction | 2021 |
| Mappazzone Ltd | Manufacturing | 2025 |
| Mark Wedge QS Services Limited | Professional & scientific | 2015 |
| Material-Masters Limited | Professional & scientific | 2014 |
| Mbcc Hospitality Limited | Hospitality | 2025 |
| Menai Bridge and District Civic Society Cymdeithas Ddinesig BRO Porthaethwy | Education | 2017 |
| Menai Bridge Community Heritage Trust Limited | Arts & recreation | 1997 |
| Menai Bridge RFC Limited | Arts & recreation | 2012 |
| Menai Marine Consulting Ltd | Transport & logistics | 2025 |
| Menai Quays Management Company Limited | Real estate | 2006 |
| Menai Security Ltd | Administrative & support | 2024 |
| Menai Window Manufacturers Limited | Construction | 1982 |
| MON Engineering Limited | Construction | 2014 |
| Morgan's Financial & Mortgage Services Limited | Financial services | 2026 |
| MÔR a Mynydd Lettings Ltd | Hospitality | 2020 |
| New Wealth Ltd | Financial services | 2018 |
| Nnjc Holdings Ltd | Administrative & support | 2025 |
| North Wales Horse Tack Limited | Wholesale & retail | 2021 |
| North Wales KIA Limited | Extraterritorial | 1992 |
| North Wales Renewables Ltd | Energy | 2013 |
| North Wales Sound and Lighting Limited | Administrative & support | 2016 |
| Ocisa Limited | Other services | 2023 |
| OFF the Ground Ltd | Information & communication | 2017 |
| OUR Planet (OUR Paradise) Ltd | Administrative & support | 2024 |
| P Brown Electrical Ltd | Construction | 2022 |
| Parc Vetcare Limited | Professional & scientific | 2020 |
| Pentraeth Holdings Limited | Professional & scientific | 1985 |
| Pentraeth Limited | Extraterritorial | 1988 |
| Perthi Limited | Real estate | 2014 |
| Phillips of Menai Ltd | Wholesale & retail | 2023 |
| Phoebe's Wardrobe Limited | Wholesale & retail | 2016 |
| Pili Palas Nature World Limited | Arts & recreation | 2011 |
| Pizzeria Menai Ltd | Hospitality | 2024 |
| Plas Trefor Properties Ltd | Real estate | 2026 |
| Prestige Blade Solutions Ltd | Professional & scientific | 2023 |
| Pro Pixels Marketing Ltd | Professional & scientific | 2021 |
| Prophesy Partners Ltd | Professional & scientific | 2013 |
| Quayside Living Limited | Wholesale & retail | 2018 |
| Quidos Property Developments Limited | Construction | 2026 |
| R & J Jones Ltd | Real estate | 2017 |
| R P Plastering and Construction Ltd | Construction | 2023 |
| R. L. Williams Limited | Construction | 1999 |
| Repossession Help Ltd | Professional & scientific | 2023 |
| Rewild UK Conservation Ltd | Agriculture & fishing | 2026 |
| Rhentu Rwbi CYF | Hospitality | 2021 |
| Ribride Limited | Professional & scientific | 2013 |
| Road and Trail Motorcycles Ltd | Wholesale & retail | 2013 |
| Robin Williams Financial Planning Ltd | Financial services | 2016 |
| S.Tec Europe Ltd | Wholesale & retail | 2012 |
| SAFAK786 Ltd | Wholesale & retail | 2024 |
| Salford PUB Company Limited | Hospitality | 2025 |
| SAP Gogledd Cymru CYF | Professional & scientific | 2025 |
| Sea Aged Glass Gwydr-Y-Mor Limited | Manufacturing | 2003 |
| Seawake Limited | Transport & logistics | 2008 |
| Silvergate Lodges Limited | Other services | 2019 |
| Siop JAC Y DO CYF | Wholesale & retail | 2023 |
| SIS Law Ltd | Professional & scientific | 2024 |
| Skymax Developments & Construction Ltd | Construction | 2022 |
| Slubbed Ltd | Wholesale & retail | 2018 |
| Smith Property Portfolio LLP | | 2021 |
| Smith Property Portfolio Management Ltd | Real estate | 2024 |
| Smyrna Heritage Developments Limited | Construction | 2023 |
| Snake and Sparrow Ltd | Hospitality | 2024 |
| Some Training Limited | Education | 2005 |
| Sosban & the Old Butchers Ltd | Hospitality | 2024 |
| Tafarn Y Glôb CYF | Hospitality | 2021 |