| Copperfield (Professional & Taxation Services) Limited | Financial services | 1991 |
| County Works Property Services Ltd | Construction | 2026 |
| CPJ Suppliers Ltd | Extraterritorial | 2023 |
| Csjm Ltd | Professional & scientific | 2024 |
| Custom Chrome and Iron Limited | Manufacturing | 2009 |
| CWM Cadnant Lodges Limited | Hospitality | 2018 |
| D Lawlor Services (Crane Hire) Limited | Construction | 2004 |
| D&A Construction Services Ltd | Construction | 2024 |
| D&K Pubs Ltd | Hospitality | 2025 |
| DA Utilities Limited | Construction | 2022 |
| Dalogistic Direct Ltd | Transport & logistics | 2024 |
| Damian Semeniuk Ltd | Transport & logistics | 2018 |
| DAN CAN DO IT Limited | Construction | 2025 |
| Danny Hughes Plastering & Building Limited | Construction | 2022 |
| Dapj Investments Limited | Real estate | 2024 |
| DCS Consultancy Services Limited | Information & communication | 2004 |
| Dealgrab Ltd | Information & communication | 2026 |
| Defender Limited | Wholesale & retail | 2018 |
| Delyn Windows Limited | Construction | 2001 |
| Diana Kebab Flint Ltd | Hospitality | 2024 |
| Distld Spirits Limited | Professional & scientific | 2026 |
| DMB Accountancy Services Limited | Professional & scientific | 2025 |
| Dog Friendly Destinations Ltd | Professional & scientific | 2020 |
| Domkor Ltd | Transport & logistics | 2024 |
| DP Contractors Ltd | Construction | 2024 |
| DR EMC Ltd | Information & communication | 2021 |
| Dracodrum Ltd | Manufacturing | 2015 |
| DW Electrical Building & Renovations Ltd | Construction | 2022 |
| E.B Holdings Ltd | Financial services | 2024 |
| ECI Support Services Ltd | Professional & scientific | 2018 |
| Eclipse Tanning Ltd | Arts & recreation | 2023 |
| Ecolive Energy Solutions Ltd | Construction | 2022 |
| Efes Pizza (NW) Limited | Hospitality | 2016 |
| EJD DEN Limited | Health & social care | 2023 |
| EJS Drainage Limited | Water & waste | 2026 |
| EKO Property Management Ltd | Real estate | 2023 |
| EKO Renovation & Builds Ltd | Real estate | 2023 |
| Electrical Wholesale Supplies (Flint) Limited | Wholesale & retail | 2003 |
| Emesel Limited | Information & communication | 2022 |
| Englefield Villa Limited | Real estate | 2006 |
| Envirosoluk Ltd | Construction | 2018 |
| Eqip Management Services Ltd | Professional & scientific | 2026 |
| Estabecca Limited | Health & social care | 2020 |
| Evans Delivery Services Ltd | Transport & logistics | 2025 |
| Expert Tree Services Ltd | Administrative & support | 2021 |
| Fairway Design to Print LLP | | 2008 |
| Fantastic Plastics Recycling Ltd | Water & waste | 2025 |
| Fazakerley Sports & Social Club Limited | Hospitality | 2018 |
| Fervid Fitness Ltd | Arts & recreation | 2020 |
| Fflint CYF | Financial services | 2023 |
| Flex Strength Gym Limited | Wholesale & retail | 2013 |
| Flint Convenience Ltd | Wholesale & retail | 2025 |
| Flint Mountain Catering Limited | Hospitality | 2025 |
| Flint Phones Ltd | Wholesale & retail | 2025 |
| Flint Pizza CH6 Ltd | Hospitality | 2026 |
| Flint Property Sales Limited | Real estate | 2023 |
| Flint Rugby Club Limited | Arts & recreation | 2026 |
| Flint Town United Football Club Limited | Education | 2025 |
| Flintshire Furniture & Upholstery Repairs Ltd | Other services | 2025 |
| Flintshire Homes Ltd | Real estate | 2002 |
| FMH Hotel Limited | Hospitality | 2016 |
| Football LAB (NW) Ltd | Other services | 2022 |
| Formacast Solutions Limited | Professional & scientific | 2026 |
| FTU Limited | Arts & recreation | 2022 |
| G & L Property Ltd | Real estate | 2020 |
| G a Roberts Limited | Construction | 2008 |
| G D & Sons Quality Paving Ltd | Construction | 2016 |
| G D Elliott Ltd | Health & social care | 2014 |
| G E & R Hellen Limited | Wholesale & retail | 2004 |
| G P Bricklaying Ltd | Construction | 2016 |
| G.C.M. Formworks Limited | Construction | 2006 |
| Gall Solutions Limited | Information & communication | 2024 |
| Generation I Ltd | Education | 2025 |
| Georgieff Jones Finance Limited | Professional & scientific | 1992 |
| Ghani Property Limited | Real estate | 2016 |
| Gilsenan Homes Limited | Real estate | 2025 |
| GML Professional CIC | Professional & scientific | 2020 |
| Governor Driveways Ltd | Construction | 2026 |
| GPH Skegness Limited | Wholesale & retail | 2020 |
| Gramarc Property Development Limited | Construction | 2021 |
| Grey Dog Limited | Extraterritorial | 2013 |
| Grid Free Power Limited | Extraterritorial | 2010 |
| GTC Designs Ltd | Wholesale & retail | 2025 |
| Hairfix (Flint) Limited | Other services | 2019 |
| Hamlyn Jones Limited | Administrative & support | 2019 |
| Happy Feet (North Wales) Ltd | Other services | 2014 |
| Harun's Kebab and Burger House Ltd | Hospitality | 2022 |
| Haus of Gods Ltd | Arts & recreation | 2025 |
| Haywards Construction & Joinery Ltd | Construction | 2025 |
| Hazlot Estates Limited | Real estate | 2025 |
| Hazlot Holdings Limited | Financial services | 2021 |
| Health Foods (Wholesale) Limited | Wholesale & retail | 2024 |
| Helping Hand Cleaning and Ironing Services Limited | Other services | 2015 |
| HM Nails Limited | Other services | 2022 |
| Home Glow Cleaning Ltd | Administrative & support | 2022 |
| HPA Holdings Limited | Real estate | 2016 |
| Hughes and Bros Domestic Demolition Ltd | Construction | 2025 |
| Hylite (UK) Limited | Extraterritorial | 2010 |
| Hylite Security Limited | Extraterritorial | 2010 |
| I Klear Limited | Wholesale & retail | 2013 |