| Festival Dancefloors Limited | Administrative & support | 2018 |
| Festival Fireworks Displays Ltd | Arts & recreation | 2025 |
| Festival Fireworks Limited | Arts & recreation | 2001 |
| Fetchsense Ltd | Professional & scientific | 2025 |
| Ffeg Techco Ltd | Information & communication | 2026 |
| Fflat Four Restoration Limited | Extraterritorial | 2023 |
| Fflatfour Performance CYF | Wholesale & retail | 2016 |
| FGR Consultants Ltd | Professional & scientific | 2024 |
| Field and Falcon Adventure Store Limited | Wholesale & retail | 2022 |
| Fighting Back Limited | Other services | 2019 |
| Figure Solutions Limited | Professional & scientific | 2023 |
| Film Locations North Wales Ltd | Real estate | 2022 |
| Filmcafe Ltd | Information & communication | 2008 |
| Filski Limited | Transport & logistics | 2019 |
| Filtek Solutions Limited | Manufacturing | 2011 |
| Finance 4 U (NW) Limited | Financial services | 2005 |
| Financial Investigative Media Ltd | Information & communication | 2015 |
| Finansure Limited | Professional & scientific | 2001 |
| Finnley Engineering Ltd | Professional & scientific | 2022 |
| Finza Designs Ltd | Professional & scientific | 2026 |
| Fire Station 1899 Limited | Real estate | 2013 |
| Fireplaces by Design ( Mold ) Limited | Wholesale & retail | 2007 |
| Fireside Warehouse Limited | Wholesale & retail | 2025 |
| First AID Company of Trainers Limited | Other services | 1998 |
| First Compliance Limited | Administrative & support | 2024 |
| First Line Maintenance Limited | Manufacturing | 2002 |
| First Perfect Pizza Ltd | Hospitality | 2018 |
| First Phase IT Ltd | Information & communication | 2019 |
| First Response AI Ltd | Information & communication | 2026 |
| Fit for Every Game Limited | Education | 2021 |
| Five Bars Properties Ltd | Real estate | 2021 |
| FIZ Engineering Ltd | Construction | 2007 |
| FJ Services (UK) Limited | Construction | 1998 |
| FK Couriers Limited | Transport & logistics | 2025 |
| Flair Focus Media Limited | Professional & scientific | 2025 |
| Flame Social Ltd | Professional & scientific | 2021 |
| Flavour of Portugal Ltd | Hospitality | 2019 |
| Flawless Makeup Salon Limited | Other services | 2015 |
| Fleek Beauty Salon Limited | Other services | 2018 |
| Fletcher Langley Limited | Manufacturing | 2023 |
| Fletcher Properties (Wrexham) Limited | Administrative & support | 2009 |
| Fleur Burgoyne Limited | Information & communication | 2018 |
| Flexible Lifestyle Employment Company Limited | Administrative & support | 2017 |
| Flie CIC | Other services | 2022 |
| Flintshire Hydraulic Services (Holdings) Limited | Professional & scientific | 2008 |
| Flintshire Roofing Limited | Construction | 2015 |
| Flintshire Tourism Association | Other services | 2009 |
| Flintshire Woodlands Limited | Agriculture & fishing | 1985 |
| Flixx Recruitment Limited | Information & communication | 2015 |
| FLJ Properties Wrexham Limited | Real estate | 2026 |
| FLM Concepts Ltd | Wholesale & retail | 2022 |
| FLM Projects Limited | Wholesale & retail | 2019 |
| FLM Recruit Ltd | Administrative & support | 2024 |
| Floor Sealants Limited | Construction | 1993 |
| Flooring & Blinds Limited | Wholesale & retail | 2016 |
| Flowers in the Window Limited | Wholesale & retail | 2013 |
| Flowstone Industrial Flooring Limited | Construction | 2008 |
| Flowstone Industrial UK Limited | Construction | 2016 |
| Fluxify Market Ltd | Wholesale & retail | 2025 |
| FM Engineering Limited | Construction | 2003 |
| Focus Cymru Live CYF. | Arts & recreation | 2024 |
| Focus Music Cymru CYF | Arts & recreation | 2020 |
| Focused Fitness TC Ltd | Arts & recreation | 2021 |
| Folan Brookes Financial Consultants Limited | Financial services | 2020 |
| Foliage Nursery Ltd | Agriculture & fishing | 2023 |
| Fong's Garden Yang Ltd | Hospitality | 2025 |
| Food Plus (Wrexham) Limited | Wholesale & retail | 2021 |
| Food Plus Supermarket Limited | Wholesale & retail | 2019 |
| Food Theatre Catering and Events Limited | Hospitality | 2021 |
| Foodtech Consulting Limited | Administrative & support | 2011 |
| Ford Consultancy Services Ltd | Professional & scientific | 2011 |
| Forefront Accountancy Services Limited | Professional & scientific | 2010 |
| Foremans (CIS) Limited | Construction | 2011 |
| Foremans (UK) Limited | Administrative & support | 2009 |
| Foremans Company Services Limited | Professional & scientific | 2007 |
| Foremans LLP | | 2007 |
| Forge Bioenergy Ltd | Other services | 2026 |
| Forge Edwards Ltd | Administrative & support | 2024 |
| Forge Property Consultants Ltd | Administrative & support | 2010 |
| Forge Property Development Ltd | Real estate | 2018 |
| Forged for Combat Ltd | Wholesale & retail | 2026 |
| Fostering Solutions (Wales) CIC | Health & social care | 2026 |
| Foundry Gym Wrexham Ltd | Arts & recreation | 2023 |
| Four Daughters Property Services Limited | Real estate | 2024 |
| Four Seasons Parks Limited | Other services | 2023 |
| Four Seasons Roofing & Building Services Limited | Construction | 2024 |
| Four Shires Electrical Engineering Ltd | Construction | 2018 |
| Four Shires Properties Limited | Real estate | 2022 |
| Fourenergy Installations Ltd | Energy | 2024 |
| Fourfjord Ltd | Information & communication | 2026 |
| Fourways Furnishings Limited | Other services | 2021 |
| FOX Bulk Transport Ltd | Transport & logistics | 2020 |
| FOX Bulk Transport Wrexham Ltd | Transport & logistics | 2026 |
| Foxall Surveying & Design Services Ltd | Construction | 2008 |
| Foxfield (Hope) Management Company Ltd | Real estate | 2026 |
| FP Engineering (Wales) Limited | Manufacturing | 2014 |
| Francis 2021 Limited | Health & social care | 2003 |
| Franklin Wyatt Limited | Professional & scientific | 2013 |
| Frazer Group Limited | Construction | 2004 |
| Frazer Holdings Limited | Construction | 2004 |