| FOR the Love of Scrubs Birmingham C.I.C. | Manufacturing | 2020 |
| For-Give Limited | Wholesale & retail | 2004 |
| For.Ex Services Ltd | Financial services | 2021 |
| Forazure Ltd | Information & communication | 2019 |
| Forbear! Theatre Limited | Arts & recreation | 2015 |
| Forbello Tetron Ltd | Construction | 2020 |
| Forbes Global Ltd | Administrative & support | 2019 |
| Forbidden Noodles Ltd | Information & communication | 2020 |
| Force Data Ltd | Information & communication | 2017 |
| Forcecrete Ltd. | Wholesale & retail | 2024 |
| Forcewave Ltd | Real estate | 2025 |
| Forcom Ltd | Administrative & support | 2024 |
| Ford Anaesthetic Services Ltd | Health & social care | 2011 |
| Ford Farmhouse Holdings Limited | Real estate | 2025 |
| Fordbridge Railway Engineering Ltd | Construction | 2013 |
| Forde's Reclamations Ltd | Water & waste | 2021 |
| Fordsdrains Ltd | Administrative & support | 2026 |
| Fore Gyms Limited | Arts & recreation | 2019 |
| Fore Meal Limited | Hospitality | 2023 |
| Fore Salcombe Ltd. | Professional & scientific | 1997 |
| Forefatherz Ltd | Wholesale & retail | 2025 |
| Forefront Allcleaner Ltd | Administrative & support | 2024 |
| Forefront Social Housing C.I.C. | Hospitality | 2016 |
| Foregate IT Services Ltd | Information & communication | 2022 |
| Foreign Car Hire Ltd | Administrative & support | 2020 |
| Foreign Emperors Ltd | Extraterritorial | 2025 |
| Foremost Constructions Limited | | 1980 |
| Foremost Freight (U. K.) Ltd | Transport & logistics | 2020 |
| Forensic Archive Ltd | Information & communication | 2005 |
| Forensic Defence Ltd | Other services | 2017 |
| Forensic Evaluation Limited | Administrative & support | 2017 |
| Forensic Pathways Limited | Information & communication | 2001 |
| Forensic Science Service Ltd | Professional & scientific | 2003 |
| Forensic Team Ltd | Professional & scientific | 2019 |
| FORENSIC8 Limited | Professional & scientific | 1993 |
| Forensix Ltd | Professional & scientific | 2017 |
| Foresee Fixed Line Ltd | Information & communication | 2013 |
| Foresee Group Ltd | Extraterritorial | 2017 |
| Foresee Investments Ltd | Real estate | 2023 |
| Foresight Advisory Limited | Professional & scientific | 2021 |
| Foresight Care Ltd | Health & social care | 2022 |
| Foresight Quality Limited | Administrative & support | 2007 |
| Foresight Youth Living Ltd | Health & social care | 2026 |
| Forest Anaesthetic Services Ltd | Health & social care | 2019 |
| Forest and Woody Ltd | Real estate | 2020 |
| Forest Flooring Sons and Co Limited | Construction | 2024 |
| Forest Gate Bewdley Limited | Wholesale & retail | 2024 |
| Forest Green Management Company Limited | Households | 2023 |
| Forest of Dean Independent College Limited | Education | 2026 |
| Forest Property Group Ltd | Real estate | 2020 |
| Forest Software Solutions Limited | Professional & scientific | 2012 |
| Forest Utilisation Limited | | 1967 |
| Forest Vale Fundco Limited | Real estate | 2004 |
| Forestry & Citrus Research Ltd | Agriculture & fishing | 2025 |
| Forestserve Property Management Limited | Professional & scientific | 1994 |
| Forever 1 Ltd | Other services | 2020 |
| Forever Abundant PAN African CC Ltd | Other services | 2018 |
| Forever Bless Jamaican Cookhouse Limited | Hospitality | 2024 |
| Forever Bless Limited | Manufacturing | 2021 |
| Forever Construction Birmingham Ltd | Construction | 2024 |
| Forever CYC Property Ltd | Real estate | 2024 |
| Forever Forward Ltd | Wholesale & retail | 2024 |
| Forever Grace Limited | Wholesale & retail | 2018 |
| Forever Green Co Group Ltd | Administrative & support | 2021 |
| Forever Housing Ltd | Hospitality | 2020 |
| Forever Living Homes CIC | Real estate | 2023 |
| Forever Loud Ltd | Information & communication | 2025 |
| Forever Memories Limited | Wholesale & retail | 1997 |
| Forever Money Investments Ltd | Real estate | 2021 |
| Forever Scaffolding Ltd | Construction | 2023 |
| Forever Tasty by Mada Ltd | Manufacturing | 2021 |
| Forever Tech Ltd | Information & communication | 2024 |
| FOREVER18 Ltd | Wholesale & retail | 2025 |
| Forfend Information Security Ltd | Information & communication | 2022 |
| Forfightfans Ltd | Information & communication | 2026 |
| Forge House Development Ltd | Real estate | 2023 |
| Forge Industrial Management Company Limited | Households | 2021 |
| Forge Soft Ltd | Information & communication | 2024 |
| Forged and Found Ltd | Wholesale & retail | 2026 |
| Forged Burgers Limited | Hospitality | 2023 |
| Forged Fitnesswear Ltd | Wholesale & retail | 2026 |
| Forgeline Logistics Limited | Transport & logistics | 2025 |
| Forgeline Trade Ltd | Wholesale & retail | 2025 |
| Forgeline Trading Ltd | Transport & logistics | 2022 |
| Forgeq Ltd | Water & waste | 2021 |
| Forget-Me-Not Press Ltd | Wholesale & retail | 2023 |
| Forgiving C.I.C. | Hospitality | 2020 |
| Forichmond Limited | Health & social care | 2025 |
| Forid Pizza Ltd | Hospitality | 2025 |
| Fork Lifts R US Limited | Manufacturing | 2012 |
| Fork Travel Limited | Administrative & support | 2006 |
| Fork-Fit Ltd | Manufacturing | 2025 |
| Forklift Pioneer Training Ltd | Education | 2022 |
| Forklift Service & Repairs Ltd | Professional & scientific | 2021 |
| Forklift Training Birmingham Ltd | Education | 2025 |
| Form Club Ltd | Arts & recreation | 2025 |
| Form Fabrications (Birmingham) Limited | Manufacturing | 1986 |
| Form Fabrications Limited | Professional & scientific | 1976 |
| Form Filer Ltd | Administrative & support | 2021 |
| Formad Motor Ltd | Wholesale & retail | 2024 |