| Conwy Contractors Limited | Construction | 2016 |
| Conwy Couriers Ltd | Transport & logistics | 2026 |
| Conwy Estates Limited | Real estate | 2015 |
| Conwy Investments Limited | Real estate | 2015 |
| Conwy Mind | Health & social care | 1998 |
| Conwy Property Services Ltd | Administrative & support | 2019 |
| Coprhouse Ltd | Information & communication | 2026 |
| Copthorne Securities Limited | Real estate | 1954 |
| Corncrake Music Limited | Information & communication | 2012 |
| Craba Limited | Professional & scientific | 2019 |
| Creating Enterprise C.I.C. | Administrative & support | 2014 |
| Creative Faith CIC | Education | 2024 |
| Criseliza Limited | Health & social care | 2025 |
| Croesengan Uchaf Ltd | Agriculture & fishing | 2025 |
| Crossley Hendre Limited | Agriculture & fishing | 1989 |
| D E W Capital Ltd | Health & social care | 2025 |
| Darlington Homes NW Ltd | Real estate | 2025 |
| Davfrogjnr Ltd | Wholesale & retail | 2025 |
| Deksmart Limited | Manufacturing | 2012 |
| Delyth Hughes Ltd | Professional & scientific | 2022 |
| Demir Bookkeeping Services Limited | Professional & scientific | 2019 |
| Designer Decking Limited | Manufacturing | 2017 |
| Detailed Outdoor Living Ltd | Wholesale & retail | 2025 |
| Deut ZAN Sefton Ltd | Extraterritorial | 2026 |
| Devise Technology Limited | Information & communication | 2017 |
| Dewin Consulting CYF | Professional & scientific | 2020 |
| DH Wind Services Ltd | Construction | 2025 |
| Disrupt the Void Limited | Other services | 2026 |
| DIY Decks Limited | Manufacturing | 2012 |
| DK Estates NW Ltd | Real estate | 2025 |
| Dragon Style Roofing North Wales Ltd | Construction | 2025 |
| Drawing Girl Limited | Other services | 2013 |
| Dreamers Dare Ltd | Health & social care | 2019 |
| DRS Mechanical Services Ltd | Other services | 2016 |
| DW Contractors Ltd | Construction | 2021 |
| E H a Capital Ltd | Health & social care | 2025 |
| Earth & Marine Environmental Consultants Ltd | Professional & scientific | 2010 |
| ECCN2025 Limited | Administrative & support | 2023 |
| Eco Future Ltd | Construction | 2023 |
| Ecoclearances Ltd | Transport & logistics | 2025 |
| Eden Agri & Equine Ltd | Agriculture & fishing | 2026 |
| Edwards Wind Services Ltd | Construction | 2023 |
| Eirias Consultancy Ltd | Information & communication | 2022 |
| Elisha Roberts Conveyancing Services Limited | Professional & scientific | 2014 |
| Elite Digital Systems Limited | Information & communication | 2012 |
| Eliteexteriorcare Ltd | Administrative & support | 2025 |
| Elwy Holiday Home Sales Limited | Hospitality | 2012 |
| Elwy Valley Park Limited | Households | 1998 |
| Elwy Valley Shepherds Huts Ltd | Construction | 2024 |
| Elwy Working Woods Ltd. | Agriculture & fishing | 2009 |
| Embriel Ltd | Professional & scientific | 2024 |
| Emerald Bookkeeping Services Ltd | Professional & scientific | 2024 |
| Empathy Health Ltd | Health & social care | 2024 |
| Energy Safety Solutions Ltd | Professional & scientific | 2022 |
| Europe-Cargo Logistics Ltd | Transport & logistics | 2019 |
| Eurosoil 28 Ltd | Administrative & support | 2025 |
| Everything Fibre Coms Ltd | Construction | 2020 |
| Express Cars Valeting Ltd | Administrative & support | 2026 |
| Family Jewels Ltd | Manufacturing | 2024 |
| Farm and Pet Place Limited | Wholesale & retail | 1999 |
| Felicity’S House Limited | Hospitality | 2026 |
| FEM International Limited | Administrative & support | 2025 |
| Ffridd Bach Cabins Ltd | Hospitality | 2025 |
| Ffridd Bach Limited | Other services | 2021 |
| Fisher Power Services Ltd | Construction | 2024 |
| FOR Every Occasion Balloon Artists Ltd. | Wholesale & retail | 2011 |
| Fourth Dimension Films Ltd | Information & communication | 2012 |
| FOX & Bear Photography Limited | Professional & scientific | 2021 |
| FOX and Hounds (Shawbury) Ltd | Hospitality | 2024 |
| Freemanfilms Limited | Information & communication | 2021 |
| Fron Goch Farm Ltd | Hospitality | 2021 |
| Future Heritage Stone Masonry Limited | Construction | 2009 |
| Future Roundhalls UK Limited | Wholesale & retail | 2023 |
| G & U Leisure Limited | Hospitality | 2024 |
| G a E W Davies CYF | Construction | 2007 |
| G&E Civil Engineering Limited | Construction | 2012 |
| G&E Construction Group Limited | Construction | 2016 |
| G. I. W. Limited | Agriculture & fishing | 2012 |
| Gainsborough (Abergele) Management Company Limited | Real estate | 2020 |
| GAR Property Consultants Ltd | Professional & scientific | 2020 |
| GAT (NW) Ltd | Real estate | 2020 |
| Gelegas CYF | Construction | 2009 |
| Gents & Beauties Hairdressers Ltd | Other services | 2025 |
| Geopro Ltd | Construction | 2019 |
| George Nelson Transport Ltd | Transport & logistics | 2015 |
| Gerallt Evans Metalcraft Ltd | Manufacturing | 2021 |
| Gill & Sons Plastering & Building Ltd | Construction | 2026 |
| Glan Llyn 4 LLP | | 2025 |
| Glan YR Aber Ltd | Households | 2021 |
| Glmp Ltd | Information & communication | 1999 |
| Global Performance Limited | Other services | 2022 |
| Go Green Renewable Solutions Ltd | Construction | 2022 |
| Goblin Games Ltd | Arts & recreation | 2015 |
| Goblin Games Outsourcing Ltd | Information & communication | 2025 |
| Gospel Fellowship Association UK | Other services | 2016 |
| Great Orme Drinks Co. Ltd | Wholesale & retail | 2018 |
| Gwaith Saer Howatson Joinery Ltd | Construction | 2021 |
| GWC Energy Consultants Ltd | Professional & scientific | 2024 |
| GWC Property Management Ltd | Real estate | 2022 |
| Gwrych Castle Preservation Trust Limited | Arts & recreation | 2001 |