| Harri Evans CYF. | Real estate | 2023 |
| Hazelgreen Property Limited | Real estate | 2016 |
| Health and Food Llanrwst Limited | Wholesale & retail | 2016 |
| Heminsley Mullins Ltd | Professional & scientific | 2021 |
| Hemul Ltd | Information & communication | 2013 |
| Heritage Habituals Ltd | Wholesale & retail | 2026 |
| Hope for Life International | Education | 2020 |
| Howell Jones and Company Limited | Professional & scientific | 2012 |
| Htrun Ltd | Wholesale & retail | 2025 |
| Hughes Surveying Solutions Ltd | Financial services | 2016 |
| ILD Engineering Ltd | Manufacturing | 2015 |
| IMW Estates Limited | Real estate | 2014 |
| Iona Edwards CYF | Professional & scientific | 2012 |
| John Lloyd Williams (Adeiladydd) CYF | Construction | 2001 |
| John M. Austin Ltd | Other services | 2018 |
| JON Edwards Pipeline Services Ltd | Construction | 2019 |
| Jones Coach & BUS (NT) Limited | Wholesale & retail | 2025 |
| Jones Coach & BUS Limited | Wholesale & retail | 2025 |
| Jones Coach & BUS Sales Limited | Wholesale & retail | 2011 |
| Jones Hsepm Limited | Professional & scientific | 2015 |
| Jones Podger Limited | Administrative & support | 2017 |
| Kirkland Provost Ltd | Construction | 2025 |
| L E Jones Group Ltd | Financial services | 2026 |
| Leading Edge Rope Access Ltd | Manufacturing | 2022 |
| Leyline Press Ltd | Information & communication | 2021 |
| Little Lily and Co Childrens Boutique Ltd | Wholesale & retail | 2026 |
| Llaeth Bod-Ffynnon CYF | Agriculture & fishing | 2018 |
| Llaeth Hendre CYF | Administrative & support | 2017 |
| Llanrwst Kebab Ltd | Hospitality | 2017 |
| Llanrwst United Football Club | Arts & recreation | 2025 |
| Llefrith Henfaes CYF | Agriculture & fishing | 2019 |
| Llew Jones Limited | Transport & logistics | 2005 |
| Llyffant CYF | Wholesale & retail | 2015 |
| Llys Tawel Estate Road Limited | Households | 2019 |
| Love to EAT (Conwy) Limited | Hospitality | 2018 |
| Love to EAT (Llandudno) Limited | Hospitality | 2014 |
| Love to EAT (NW) Limited | Hospitality | 2013 |
| Love to EAT (Southport) Limited | Hospitality | 2016 |
| Lumin Psychology Limited | Professional & scientific | 2024 |
| M.I.N.W Holiday Home Cleaning Services Ltd | Administrative & support | 2018 |
| M.I.N.W Laundry House Ltd | Other services | 2025 |
| Maenan Abbey Limited | Hospitality | 2013 |
| Mamaba Ltd | Hospitality | 2022 |
| Mary's Court Ltd | Hospitality | 2019 |
| Megalith Media Ltd | Information & communication | 2023 |
| Melin Wynt Cambwll CYF | Energy | 2012 |
| Melin Wynt Disgarth Uchaf Limited | Energy | 2015 |
| Melin Wynt Hafodty DDU CYF | Energy | 2014 |
| Melin Wynt TY Gwyn Limited | Energy | 2015 |
| Menter Iaith Conwy CYF | Arts & recreation | 2005 |
| Menter Pandy Tudur CYF | Other services | 1991 |
| Mentrau Iaith Cymru CYF. | Other services | 2000 |
| MGW Projects Limited | Manufacturing | 2011 |
| MI2 UK Limited | Real estate | 2004 |
| MK Enterprises (UK) Limited | Construction | 2010 |
| Mobile Mobile Ltd | Other services | 2019 |
| Morannedd Court Flats Limited | Households | 1976 |
| Move Together Limited | Real estate | 2018 |
| Musotour UK Ltd | Transport & logistics | 2016 |
| Nannerch Conservation Group Ltd | Other services | 2023 |
| Nant Conwy Tyres Limited | Wholesale & retail | 2012 |
| Nedlief Ltd | Professional & scientific | 2022 |
| Neodoo Ltd | Administrative & support | 2020 |
| Nevada Equipment Ltd | Wholesale & retail | 2020 |
| Nico Travel Ltd | Administrative & support | 2018 |
| Nutri-Ag Ltd | Wholesale & retail | 2023 |
| Oakowlfox Ltd | Administrative & support | 2016 |
| P W Home Projects Ltd | Wholesale & retail | 2025 |
| P W Tiling Ltd | Construction | 2021 |
| P Y G (Properties) CYF | Real estate | 2012 |
| Panache Project Management Ltd | Construction | 2026 |
| Pantri Crwst CBC | Wholesale & retail | 2019 |
| PAR Golf (Chester) Limited | Arts & recreation | 1996 |
| Phoenix Pubs and Bars Limited | Hospitality | 2023 |
| PIE I Have Eaten Ltd | Professional & scientific | 2018 |
| Pigtown Ltd | Arts & recreation | 2024 |
| Pigtown Productions Ltd | Arts & recreation | 2024 |
| Pigtown Theatre C.I.C. | Arts & recreation | 2014 |
| Plas Farm Caravan Park Ltd | Hospitality | 2013 |
| Plas Helyg Management Company Limited(The) | Households | 1986 |
| Premier Construction Training Limited | Administrative & support | 2018 |
| Preparebnb Limited | Administrative & support | 2020 |
| Probert Estates Ltd | Real estate | 2017 |
| Prodig (NW) Limited | Manufacturing | 2013 |
| Prodig Haulage Ltd | Transport & logistics | 2022 |
| Properties Partnership Ltd | Real estate | 2021 |
| Prosiect Properties Ltd | Real estate | 2021 |
| Quarrybank Property Management Company Limited | Households | 2009 |
| Quay Central Limited | Professional & scientific | 2007 |
| R&M Utilities Ltd | Construction | 2025 |
| R-Cut Ltd | Administrative & support | 2017 |
| Realism Training Ltd | Education | 2022 |
| Recordiau Rwst Records CYF | Information & communication | 2025 |
| Reesbier Limited | Administrative & support | 2016 |
| Respiratory Consultancy Limited | Health & social care | 2016 |
| Riverside Basics Limited | Wholesale & retail | 2026 |
| RJL Groundworks Ltd | Construction | 2021 |
| Rockwell Henderson Ltd | Extraterritorial | 2016 |
| Rose Contractors Limited | Construction | 2013 |
| RP West CYF | Real estate | 2026 |