| Forward Properties Group Limited | Extraterritorial | 2022 |
| Forward Property Maintenance Ltd | Households | 2021 |
| Forward Property Services Limited | Construction | 2017 |
| Forward Services Limited | Wholesale & retail | 2023 |
| Forward Social Care Limited | Health & social care | 2018 |
| Forward Solutions Limited | Extraterritorial | 2024 |
| Forward Stone Cleaning & Restoration Limited | | 1975 |
| Forward Thinking Developments Limited | Education | 2010 |
| Forward Vaping Ltd | Wholesale & retail | 2017 |
| Forwell Ltd | Information & communication | 2015 |
| Forza Cars Ltd | Wholesale & retail | 2024 |
| Fosco Group Limited | Financial services | 2019 |
| Fosco, Hayes, Hurdley Limited | Manufacturing | 1936 |
| Foshan Kudeku Trading Limited | Wholesale & retail | 2025 |
| Fossa IT Limited | Information & communication | 2008 |
| Fosse Children Services Limited | Health & social care | 2024 |
| Fosse Support Services Limited | Health & social care | 2024 |
| Foster Talk Limited | Other services | 2007 |
| Fostering First (UK) Holdco Limited | Financial services | 2025 |
| Fostering First (UK) Limited | Health & social care | 2023 |
| Fosters Accountancy Services (Midlands) Limited | Professional & scientific | 2010 |
| Fotmik Ltd | Hospitality | 2024 |
| Fotoauto Limited | Manufacturing | 2015 |
| Fotomechanix Limited | Professional & scientific | 1977 |
| Fotw Studios Ltd | Information & communication | 2021 |
| Foulkes Finance and Property Co. Ltd | Construction | 2020 |
| Found Yoga Ltd | Arts & recreation | 2026 |
| Foundation Flooring Limited | Construction | 2013 |
| FOUNDATION8 Ltd | Construction | 2025 |
| Foundations 1ST Ltd | Health & social care | 2012 |
| Foundations 4 the Future C.I.C. | Education | 2017 |
| Founders Culture Limited | Wholesale & retail | 2023 |
| Founders Faculty Limited | Financial services | 2026 |
| Foundry Birmingham Limited | Real estate | 2018 |
| Foundry Gym Manchester Ltd | Arts & recreation | 2025 |
| Foundry Lincoln Limited | Real estate | 2018 |
| Foundry Living Ltd | Real estate | 2026 |
| Foundry Loughborough Limited | Real estate | 2017 |
| Foundry Nottingham Limited | Real estate | 2018 |
| Foundry Properties Ltd | Real estate | 2021 |
| Fountain (Hazelwood) Management Company Limited | Real estate | 1984 |
| Fountain Court Birmingham Limited | Construction | 2024 |
| Fountain Court Chambers (Birmingham) Limited | Real estate | 1964 |
| Fountain Lettings Ltd | Real estate | 2011 |
| Fountain Lofts Lettings Limited | Real estate | 2026 |
| Fountain Nursing and Care Home Limited | Health & social care | 2006 |
| Fountain Residence Limited | Hospitality | 2025 |
| Fountaincore Limited | Hospitality | 2020 |
| Fountainline Properties Ltd | Real estate | 2026 |
| Four (UK) Limited | Wholesale & retail | 2004 |
| Four Ashes Community Club Ltd | Arts & recreation | 2020 |
| Four Ashes Garage Limited | Wholesale & retail | 1957 |
| Four Ashes Golf Management Limited | Arts & recreation | 2020 |
| Four Ashes Road Ltd | Real estate | 2016 |
| Four Aston Ltd | Administrative & support | 2022 |
| Four Brothers Transport Ltd | Transport & logistics | 2020 |
| Four Corners Innovations Ltd | Wholesale & retail | 2024 |
| Four Corners Roofing Limited | Construction | 2018 |
| Four Corners Trading Company Limited | Wholesale & retail | 1999 |
| Four Courts Proprietors Limited | Households | 1986 |
| Four Create Print Ltd | Manufacturing | 2017 |
| Four Crossroads Limited | Hospitality | 2023 |
| Four Emperors Holding Ltd | Real estate | 2023 |
| Four Enterprise Limited | Extraterritorial | 2005 |
| Four Gems Properties (WB) Ltd | Real estate | 2025 |
| Four Gems Properties Ltd | Real estate | 2025 |
| Four Hills Capital Limited | Construction | 2022 |
| Four Invest Holdings Ltd | Financial services | 2023 |
| Four Issues Limited | Hospitality | 2018 |
| Four Leaf Investments Limited | Administrative & support | 2022 |
| Four Mana Limited | Transport & logistics | 2025 |
| Four Masters (UK) Limited | Professional & scientific | 2008 |
| Four Oak Investments Limited | Real estate | 2019 |
| Four Oaks (WM) Limited | Transport & logistics | 2018 |
| Four Oaks Construction Limited | Construction | 2021 |
| Four Oaks Enterprises Limited | Information & communication | 2017 |
| Four Oaks Healthcare Ltd | Health & social care | 2014 |
| Four Oaks Real Estate Ltd | Real estate | 2020 |
| Four Oaks Wealth Management Ltd | Financial services | 2013 |
| Four Pillars Property Group Limited | Real estate | 2023 |
| Four Roads Construction Ltd | Construction | 2013 |
| Four Season Logistics Ltd | Transport & logistics | 2024 |
| Four Seasons 71 UK Ltd | Other services | 2020 |
| Four Seasons AC Services Ltd | Energy | 2024 |
| Four Seasons Barfia Ltd | Manufacturing | 2023 |
| Four Seasons Chinese Restaurant Ltd | Hospitality | 2025 |
| Four Seasons Claims Ltd | Wholesale & retail | 2025 |
| Four Seasons Food Store Ltd | Wholesale & retail | 2025 |
| Four Seasons Investments (2020) Ltd | Real estate | 2020 |
| Four Seasons Residences (2020) Ltd | Real estate | 2020 |
| Four Seasons Supported Housing Ltd | Real estate | 2025 |
| Four Sisters Private Care Ltd | Health & social care | 2025 |
| Four Speed Express Limited | Transport & logistics | 1988 |
| Four Spices Limited | Hospitality | 2015 |
| Four Square Investments Limited | Real estate | 1998 |
| Four Star Wholesaler Ltd | Wholesale & retail | 2022 |
| Four Thirds Media Limited | Information & communication | 2025 |
| Four W Holdings Limited | Financial services | 2016 |
| Four Walkers Limited | Real estate | 2020 |
| Four-Four-Two-Sports Management Ltd | Professional & scientific | 2011 |