| Formart Healthcare Ltd | Health & social care | 2021 |
| Formatprogram Limited | Information & communication | 1995 |
| Forster Joinery Limited | Manufacturing | 2023 |
| Forticade Ltd | Real estate | 2021 |
| Fortun Medical Services Limited | Health & social care | 2018 |
| Forum 2SE Limited | Hospitality | 2022 |
| Forvac Services Ltd | Manufacturing | 2006 |
| Forward Business Limited | Households | 2023 |
| Forward Property Ltd | Real estate | 2021 |
| Foster & Ball Ltd | Real estate | 2020 |
| Fotheringham Brothers Construction Limited | Construction | 2003 |
| Founders and Builders Limited | Information & communication | 2025 |
| Fountain Arts CIC | Wholesale & retail | 2022 |
| Four Hands Cleaning Ltd | Administrative & support | 2020 |
| Four Twentea Ltd | Manufacturing | 2019 |
| Fowo (Adhd) Clinic Ltd | Health & social care | 2021 |
| FOX Knight (Commercial) Limited | Real estate | 1998 |
| FOX Lets Limited | Real estate | 2022 |
| FOX Red Living Limited | Real estate | 2017 |
| Foxes in Boxes Ltd | Real estate | 2024 |
| Foxglove Dispensary Services Limited | Wholesale & retail | 2022 |
| Foxhill Controls Ltd. | Administrative & support | 2015 |
| Foxhills Holdings Limited | Financial services | 2021 |
| Foxhills Pallets Ltd | Wholesale & retail | 2025 |
| Foxhills Refinishers Limited | Wholesale & retail | 2020 |
| Foxton Way Management Company Limited | Households | 2006 |
| Fozzy Innovations Limited | Professional & scientific | 2025 |
| Franco Dominik Ltd | Administrative & support | 2026 |
| Frankie Allan Limited | Construction | 2023 |
| Frankyysdeco Ltd | Construction | 2019 |
| Freakys Gym Ltd | Arts & recreation | 2025 |
| Fred Coleman (Holdings) Ltd | Financial services | 2013 |
| Frederick Gough Facilities CIC | Arts & recreation | 2013 |
| Freear & Sons Joinery Limited | Manufacturing | 2024 |
| Freedom Commercial Services Limited | Administrative & support | 2025 |
| Freedom Companionship Services CIC | Health & social care | 2025 |
| Freedom Support Services Limited | Administrative & support | 2025 |
| Freedom UK Group Ltd | Professional & scientific | 2025 |
| Freke Care Ltd | Health & social care | 2024 |
| Fresh Eyes Property Scouts Ltd | Administrative & support | 2026 |
| Freya K9 Ltd | Administrative & support | 2022 |
| Freya Rose Counselling Ltd | Health & social care | 2025 |
| Freya Rose Joinery Ltd | Construction | 2025 |
| Freyacare Limited | Health & social care | 2018 |
| Friends Always Ltd | Real estate | 2023 |
| Frontier Security (UK) Limited | Administrative & support | 2009 |
| FTC Projects Limited | Professional & scientific | 2019 |
| Fuel and Electrical Solutions Ltd | Construction | 2014 |
| FULFILL360 Logistics Ltd | Transport & logistics | 2024 |
| Full CIRCL3 CIC | Education | 2025 |
| Full Circle Bedrooms Limited | Extraterritorial | 1980 |
| Full FX Promotions Ltd | Hospitality | 2022 |
| Fvhh Property Limited | Real estate | 2025 |
| Fvmtrans Ltd | Construction | 2026 |
| FW Bone and Spine Limited | Health & social care | 2026 |
| G & B Frankland Agriculture LLP | | 2015 |
| G & S Richards Rentals Ltd | Real estate | 2016 |
| G and F Chester Ltd | Agriculture & fishing | 2016 |
| G Grabauskas Transport Limited | Transport & logistics | 2016 |
| G Hayre Limited | Wholesale & retail | 2025 |
| G R Johnston Limited | Construction | 2002 |
| G W Time Limited | Real estate | 1999 |
| G&A Trans Ltd | Transport & logistics | 2022 |
| G&D Specialist Access Services Ltd | Manufacturing | 2019 |
| G&S Cross Country Vehicles Limited | Wholesale & retail | 2016 |
| G. & C. Johnson (Claxby) Limited | Transport & logistics | 1951 |
| G. Empson & Sons Limited | Construction | 1979 |
| G.D.M. Consultancy Limited | Information & communication | 1998 |
| G.M.B. Total Communications Limited | | 1978 |
| G.S. Kelsey Construction Ltd | Construction | 1995 |
| G7 Sales and Marketing Limited | Professional & scientific | 2021 |
| Gabi Transport Logistic Ltd | Transport & logistics | 2026 |
| Gadget Warehouse Limited | Wholesale & retail | 2026 |
| Galileo Property Ltd | Real estate | 2020 |
| Gallery Interiors Limited | Construction | 2019 |
| GAM 7 Holdings Limited | Professional & scientific | 2024 |
| GAM Management (Crown) Ltd | Hospitality | 2023 |
| GAM Management Beckwood Ltd | Hospitality | 2025 |
| GAM Residential Ltd | Real estate | 2025 |
| Gambiercybersecurity.Net Ltd | Information & communication | 2023 |
| Gands (U.K.) | Professional & scientific | 1993 |
| GAP Building Limited | Construction | 2004 |
| Garage Equipment Services Limited | Wholesale & retail | 2023 |
| Garthorpe Engineering Limited | Professional & scientific | 2024 |
| Garthorpe Farming Company Limited | Agriculture & fishing | 1957 |
| Gary Muir Structural (Lincs) Ltd | Construction | 2014 |
| GAS by TAZ Ltd | Construction | 2026 |
| Gasso Snooker Ltd | Arts & recreation | 2026 |
| Gaynard Consultancy Limited | Administrative & support | 2010 |
| GC Reports Ltd | Professional & scientific | 2016 |
| GCM Entertainments Ltd | Hospitality | 2020 |
| GCS Group Ltd | Real estate | 2023 |
| GDM Housing Ltd | Real estate | 2019 |
| GDM Specialist Services Ltd | Wholesale & retail | 2026 |
| Gdsk Financial Services Ltd | Financial services | 2019 |
| Gecko Imaging Limited | Health & social care | 2020 |
| Gelu Serban Ltd | Transport & logistics | 2024 |
| Gemma Richardson Boxing Ltd | Arts & recreation | 2025 |
| Gentleman'Sgaragesale Ltd | Wholesale & retail | 2023 |
| Geoluk Transport Ltd | Transport & logistics | 2025 |