| Flintshire Fabrications Limited | Manufacturing | 2003 |
| Flintshire Grab Hire Ltd | Transport & logistics | 2017 |
| Flintshire Holdings Limited | Extraterritorial | 2013 |
| Flintshire Taekwondo Ltd | Education | 2022 |
| FLINTSHIRE1RENTALS Limited | Real estate | 2026 |
| FLINTSHIRE1RENTALSLIMITED Ltd | Real estate | 2026 |
| Fmcf Limited | Professional & scientific | 2015 |
| Forge Fitness Equipment Limited | Manufacturing | 2021 |
| Free Range Financial Services Ltd | Financial services | 2009 |
| Freedom Endeavours Ltd | Hospitality | 2020 |
| Freedom Showers Ltd | Other services | 2016 |
| Fresh Thinking Consultancy Limited | Professional & scientific | 2026 |
| Frozensand Games Limited | Information & communication | 2016 |
| FU House Food Limited | Hospitality | 2018 |
| Fulcrum Scaffold Safety & Training Ltd | Construction | 2016 |
| Funky Apple Holidays Ltd | Hospitality | 2025 |
| G and L Properties Development Limited | Real estate | 2025 |
| G.D.Stonemasons Ltd | Construction | 2003 |
| G.P Electrics (North West) Ltd | Administrative & support | 2007 |
| Gardening for Nature Ltd | Administrative & support | 2022 |
| Gareth W Davies Funeral Directors Ltd | Other services | 2023 |
| GB Tools Ltd | Manufacturing | 2009 |
| GBH Support Services Ltd | Professional & scientific | 2026 |
| GC Marshall Limited | Manufacturing | 2019 |
| Gc-Graphs Ltd | Professional & scientific | 2018 |
| Gecko Dream Ltd | Information & communication | 2019 |
| General Store Pentre Halkyn Ltd | Wholesale & retail | 2018 |
| Genesis Cownley Ltd | Construction | 2019 |
| Gentec Ltd. | Professional & scientific | 1993 |
| Glan YR Afon Inn Holywell Ltd | Hospitality | 2017 |
| Glenrest Limited | Real estate | 2018 |
| GLH Properties and Development Ltd | Real estate | 2025 |
| GMC (Concrete) Limited | Construction | 2002 |
| Graciella Starling Millinery Limited | Wholesale & retail | 2025 |
| Great Wall Takeaway Ltd | Hospitality | 2026 |
| Green Supplies Limited | Real estate | 2000 |
| Greenfield Technologies Estates Limited | Real estate | 2017 |
| Greenfield Technologies Limited | Professional & scientific | 2017 |
| Greenough AL Limited | Wholesale & retail | 2022 |
| Greenwood Accommodation Ltd | Real estate | 2024 |
| Griffin Property Investments Ltd | Real estate | 2025 |
| Grow Smarter Limited | Professional & scientific | 2018 |
| Grumpy Gherkin Limited | Information & communication | 2025 |
| GSL Online Ltd | Wholesale & retail | 2023 |
| Gswe Limited | Health & social care | 2019 |
| Guru Trading Ltd | Wholesale & retail | 2021 |
| GVT Fabrications Limited | Professional & scientific | 2018 |
| H K Brickwork Ltd | Construction | 2020 |
| H&P Developments Limited | Real estate | 2025 |
| H. Jones Ltd | Construction | 2000 |
| Hafan Property Limited | Real estate | 2015 |
| Halkyn Castle Wood Events and Education Limited | Administrative & support | 2022 |
| Halkyn Castle Wood Leisure Limited | Hospitality | 2022 |
| Halkyn United FC CIC | Arts & recreation | 2023 |
| Hansom Subs Limited | Hospitality | 2015 |
| Happy Bargains Ltd | Wholesale & retail | 2012 |
| Happy Pet World Ltd | Wholesale & retail | 2016 |
| Haslam Properties Ltd | Real estate | 2021 |
| Haycon NW Ltd | Construction | 2020 |
| Healthcare Property Services Ltd | Hospitality | 2025 |
| Heavenly Flowers Ltd | Wholesale & retail | 2020 |
| Henson Architectural Design Services Ltd | Professional & scientific | 2013 |
| Hewetson Holdings Limited | Financial services | 1980 |
| Highloaf Ltd | Administrative & support | 1994 |
| Hillcrest Motor Company Limited | Wholesale & retail | 1992 |
| Holben Software Ltd | Information & communication | 2014 |
| Holywell Cars Contracts Limited | Transport & logistics | 2024 |
| Holywell Cars Limited | Transport & logistics | 2024 |
| Holywell Golf Club Limited | Arts & recreation | 2025 |
| Holywell Mini Market Limited | Wholesale & retail | 2024 |
| Holywell Nails & Beauty Ltd | Other services | 2023 |
| Holywell Store Ltd | Wholesale & retail | 2024 |
| Hotels of North Wales Ltd | Hospitality | 2003 |
| Hughes Parry Limited | Professional & scientific | 2010 |
| Hughes Wind Power Ltd | Professional & scientific | 2023 |
| Humber Consultants Limited | Professional & scientific | 2018 |
| HWB Hapus Limited | Health & social care | 2025 |
| I Evans Tree Services Limited | Agriculture & fishing | 2015 |
| I Mackrell Ltd | Administrative & support | 2017 |
| Ideal Support (UK) Ltd | Professional & scientific | 2009 |
| IHM Partners Ltd | Information & communication | 2023 |
| Illusion Group Ltd | Administrative & support | 2025 |
| Inside Outside Storage Limited | Professional & scientific | 2015 |
| Interlink Fabrications Limited | Financial services | 1985 |
| J & J Payne Bros Ltd | Construction | 2015 |
| J Barker Plastering Contractor Limited | Construction | 2011 |
| J G Creations Limited | Wholesale & retail | 2019 |
| J L Watts Limited | Professional & scientific | 2014 |
| J Owen Lewis Limited | Professional & scientific | 2018 |
| J R Roberts Slurry Sealing Limited | Construction | 2003 |
| J W Jackson Ltd | Transport & logistics | 2026 |
| Jane FM Ltd | Health & social care | 2014 |
| Jane Jones MES Limited | Education | 2018 |
| JAY Nash Swim Schools LLP | | 2017 |
| JLR Fuels Ltd | Wholesale & retail | 2024 |
| Joel Properties Limited | Extraterritorial | 2010 |
| John Anthony Hughes Limited | Construction | 2007 |
| Joland Plant Services Limited | Agriculture & fishing | 2017 |
| Joland Services Limited | Administrative & support | 2009 |
| Jones Premier Plants Limited | Wholesale & retail | 2025 |