| Favour Point Group Limited | Manufacturing | 2025 |
| FB Electrical Services Ltd | Construction | 2023 |
| Featherington Estates Ltd | Real estate | 2026 |
| Fence Master UK Limited | Wholesale & retail | 2015 |
| Fenella Properties Limited | Real estate | 2020 |
| Ferguson Rigging Ltd | Information & communication | 2019 |
| Fibre Tech Communications Ltd | Information & communication | 2023 |
| Fidelium Health Limited | Health & social care | 2020 |
| Fidus Fire & Security Ltd | Administrative & support | 2021 |
| Field and Forge Limited | Wholesale & retail | 2024 |
| Field View Gardens Torworth Ltd | Real estate | 2021 |
| Fields Courtyard Management Company Limited | Households | 1986 |
| Financial Administrative Services Ltd | Administrative & support | 2021 |
| Find Your Intolerances Ltd | Health & social care | 2026 |
| Fireopanel Limited | Manufacturing | 2022 |
| First Square Ltd | Construction | 2019 |
| Fish Administration Limited | Financial services | 2001 |
| Fish Communications Limited | Professional & scientific | 2016 |
| Fit Maint UK Ltd | Manufacturing | 2024 |
| Five Pyramids Press Limited | Information & communication | 2025 |
| Five Star Financial Ltd | Real estate | 2005 |
| Flagship Store Development Ltd | Professional & scientific | 2020 |
| Flashjoint Systems Ltd | Wholesale & retail | 2024 |
| Flava Supermarket Ltd | Hospitality | 2019 |
| Fleming Project Consultancy Limited | Professional & scientific | 2021 |
| Flowz Limited | Information & communication | 2017 |
| Focuschange Limited | Education | 2005 |
| Folly Nook Park Management Company Limited | Other services | 2021 |
| Forbes Asset Finance Ltd | Financial services | 2024 |
| Forbidden Keep Records Ltd | Wholesale & retail | 2025 |
| Forbs Global Limited | Administrative & support | 2012 |
| Forensic Moto Ltd | Wholesale & retail | 2025 |
| Fort Hurley Events Ltd | Construction | 2021 |
| Foxcote Estates Limited | Real estate | 2026 |
| Foxstone Forestry Limited | Agriculture & fishing | 2014 |
| FPS Plumbing Services Limited | Construction | 2025 |
| Fran Properties Ltd | Real estate | 2026 |
| Franks Broadcast Solutions Ltd | Information & communication | 2026 |
| Fraser George and Associates Limited | Professional & scientific | 2010 |
| Fred Walter & Sons Limited | Agriculture & fishing | 1959 |
| Fred's Retford Limited | Hospitality | 2012 |
| Fredmat Ltd | Financial services | 2026 |
| Free Spirit Support Services Ltd | Health & social care | 2011 |
| French Spares Ranskill Limited | Wholesale & retail | 2025 |
| Friary Mews Management Company Limited | Real estate | 2010 |
| Frontdoorpmo Limited | Administrative & support | 2025 |
| Funcshn Limited | Information & communication | 2013 |
| Future Angel Solutions Ltd | Other services | 2019 |
| Future Change Training Limited | Information & communication | 2024 |
| Future Fibre Networks Ltd | Information & communication | 2021 |
| Future Proof Property Developments Ltd | Real estate | 2023 |
| Future Zero Consulting Limited | Professional & scientific | 2023 |
| G & B Projects Ltd | Construction | 2003 |
| G D Simpson and Co Limited | Real estate | 2025 |
| G&K Cooper Limited | Real estate | 2019 |
| G. Williams & Co. (Grain) Limited | Wholesale & retail | 1996 |
| G.C. Motors (Retford) Limited | Wholesale & retail | 2010 |
| G.S Private Hire Ltd | Transport & logistics | 2023 |
| G.S Removals Retford Ltd | Transport & logistics | 2017 |
| GA Detail Ltd | Wholesale & retail | 2019 |
| Gage Property Services Limited | Administrative & support | 2014 |
| Gainsborough Transport Co.Limited | Professional & scientific | 1967 |
| Gainsborough Warehousing Limited | Professional & scientific | 1967 |
| Gait AID Performance Ltd | Wholesale & retail | 2025 |
| Gambles Grass Machinery Limited | Manufacturing | 2001 |
| Gamston Aviation Limited | Transport & logistics | 1977 |
| Gamston Flying School Limited | Arts & recreation | 2010 |
| Gamston Wood Farm Limited | Agriculture & fishing | 2012 |
| GAP Developments Ltd | Real estate | 2025 |
| GAP Group International Limited | Extraterritorial | 2018 |
| GAP Technology Limited | Wholesale & retail | 2005 |
| Garage Master Limited | Wholesale & retail | 1979 |
| GB Wolf Construction Limited | Construction | 2024 |
| GBR Communications Ltd | Professional & scientific | 2024 |
| GCA Sports Ltd | Real estate | 2014 |
| Gdpr Representative Services Limited | Professional & scientific | 2020 |
| GE Hardmetals (UK) Ltd | Wholesale & retail | 2020 |
| Gelida Medica Limited | Wholesale & retail | 2021 |
| Gelt Homes Limited | Real estate | 2025 |
| Gelt Properties Ltd | Construction | 2025 |
| GEM Mini Travel Limited | Transport & logistics | 2007 |
| Gemini Home Care Services Ltd | Health & social care | 2025 |
| Gensign Limited | Manufacturing | 2023 |
| George Goacher & Sons Limited | Agriculture & fishing | 1964 |
| George Woolley Designs & Property Maintenance Limited | Construction | 2021 |
| GET Smart Vehicle Repairs Limited | Wholesale & retail | 2024 |
| GHC Archaeology & Heritage Ltd | Professional & scientific | 2020 |
| Gilderson Secretaries Ltd | Professional & scientific | 2014 |
| Gipfel EDS Limited | Information & communication | 2016 |
| Giscl Limited | Hospitality | 2026 |
| GLD Technical Services Limited | Mining & quarrying | 2014 |
| Glentham (Agricultural Contractors) Limited | Other services | 1999 |
| Glentham Farming Company Limited | Agriculture & fishing | 1987 |
| Global Adventure Missions Limited | Education | 2012 |
| Globalink Education Ltd | Professional & scientific | 2026 |
| Glow Valeting Centre Limited | Administrative & support | 2026 |
| Glowing Fuel Limited | Wholesale & retail | 2014 |
| God’S Black Market Limited | Other services | 2019 |
| Golden Glow Boutique Limited | Wholesale & retail | 2022 |
| Golden Glow Retford Limited | Other services | 2021 |