| FDF & Associates Bourne Ltd | Households | 2023 |
| Fearless Logistics Ltd | Transport & logistics | 2021 |
| Fenix Online Limited | Wholesale & retail | 2021 |
| Fenland Cabin Getaways Ltd | Hospitality | 2022 |
| Fenland Property Ltd | Real estate | 2025 |
| Fentons of Bourne Ltd | Wholesale & retail | 1986 |
| Fibre Revolution Ltd | Manufacturing | 2024 |
| Fidus Recruitment Ltd | Administrative & support | 2021 |
| Fieldstrength Naturals Ltd | Manufacturing | 2026 |
| Figurehead Accounts UK Ltd | Professional & scientific | 2008 |
| Figurehead Properties Ltd | Real estate | 2024 |
| Finance IT Limited | Financial services | 2022 |
| Find the GAP Limited | Professional & scientific | 2023 |
| First Rate Plumbing Limited | Construction | 2006 |
| Fitnett Ltd | Arts & recreation | 2025 |
| Flightpath Collective CIC | Health & social care | 2024 |
| Floor Buddies Limited | Administrative & support | 2018 |
| Floralsilk Limited | Wholesale & retail | 1978 |
| Flowworks Consultancy Ltd | Professional & scientific | 2025 |
| Food Alchemy Ltd | Professional & scientific | 2026 |
| Foot Bliss Bourne Ltd | Health & social care | 2025 |
| FOR the Players Group Ltd | Wholesale & retail | 2021 |
| FOR the Quest Ltd | Information & communication | 2025 |
| Force Consulting Group Ltd | Real estate | 2020 |
| Foresightz Ltd | Professional & scientific | 2023 |
| Foxworth Homes Ltd | Construction | 2017 |
| FP2 Limited | Arts & recreation | 2013 |
| Frankie’S Bourne Ltd | Hospitality | 2023 |
| Freeactive Limited | Construction | 1992 |
| French Flooring Ltd | Construction | 2026 |
| Fresh Produce Inspections Ltd | Professional & scientific | 2008 |
| Friendly Car People Limited | Wholesale & retail | 2019 |
| Froglet Developments Ltd | Real estate | 2025 |
| Full of Beans Bourne Ltd | Hospitality | 2020 |
| Full of Beans Group Ltd | Hospitality | 2023 |
| Fusion Software (UK) Ltd | Information & communication | 2003 |
| G & B Farms Limited | Agriculture & fishing | 2011 |
| G&K Robinson Ltd | Real estate | 2022 |
| G6 Technologies Limited | Information & communication | 2025 |
| Gagandeep Souvik Mondal PVT Ltd | Real estate | 2022 |
| Galaxy 91 Limited | Hospitality | 2017 |
| Gambaboy Properties Limited | Agriculture & fishing | 2000 |
| Gary Baxter Ltd | Construction | 2012 |
| Gary Mabee Visuals Ltd | Information & communication | 2010 |
| GAS Generation Burnley Limited | Extraterritorial | 2016 |
| GAS Generation Farnborough Limited | Extraterritorial | 2017 |
| GAS Generation Paisley Limited | Extraterritorial | 2017 |
| GAS Generation Property Limited | Extraterritorial | 2017 |
| GAS Generation Well Street Limited | Extraterritorial | 2019 |
| Gastight Engineering Ltd | Construction | 2016 |
| GB Fleet Services Ltd | Manufacturing | 2023 |
| GC & DA HIX & SON Limited | Agriculture & fishing | 2012 |
| Gemeco Ltd | Extraterritorial | 2007 |
| Gemstone Applications Ltd | Information & communication | 2026 |
| Gentiana Consulting Limited | Professional & scientific | 2024 |
| George Gandy Limited | Agriculture & fishing | 1952 |
| George Wood Photography Ltd | Information & communication | 2019 |
| GFQ Limited | Hospitality | 2025 |
| Gibbo Services Ltd | Information & communication | 2025 |
| Give ME Space Storage Limited | Extraterritorial | 2019 |
| Glenross Financial Management Limited | Financial services | 2022 |
| Global Immigration Solutions Limited | Professional & scientific | 2006 |
| GOD IS Love Limited | Hospitality | 2022 |
| Goen Design Ltd | Professional & scientific | 2026 |
| Gold Sunrise Properties Ltd | Real estate | 2025 |
| Golden Scissors 27 Ltd | Other services | 2024 |
| Goodson Engineering Design Services Ltd | Professional & scientific | 2015 |
| GR8 Electrical Engineering Ltd | Manufacturing | 2023 |
| Grand Dental Ltd | Health & social care | 2025 |
| Grangemouth Generation Limited | Extraterritorial | 2016 |
| Greatford Garden Services Limited | Administrative & support | 1993 |
| Green Trumpet Design Ltd | Professional & scientific | 2019 |
| Greenstone Construction and Landscaping Ltd | Construction | 2024 |
| Greg Transport Ltd | Transport & logistics | 2020 |
| Griffiths Developments Ltd | Construction | 2011 |
| Grimsby-Cleethorpes Transport Company Limited | Transport & logistics | 2023 |
| Grimsthorpe & Drummond Castle Enterprises Limited | Arts & recreation | 2019 |
| Grimsthorpe & Drummond Castle Trust Limited | Agriculture & fishing | 1978 |
| Grimsthorpe Shoot Limited | Arts & recreation | 2002 |
| Ground Stabilisation J J MAC Ltd | Construction | 2020 |
| Grove Leadership Ltd | Administrative & support | 2019 |
| GSB Telehandlers Ltd | Construction | 2017 |
| Gsbsolutions Limited | Professional & scientific | 2012 |
| GT4PROPERTIES Ltd | Real estate | 2024 |
| Gurkha Food Delivery Ltd | Transport & logistics | 2026 |
| Guru Retail Ltd | Wholesale & retail | 2019 |
| HAB Solutions Ltd | Professional & scientific | 2019 |
| Hakim Osteopaths Limited | Health & social care | 2010 |
| Hall & Hall 1977 Limited | Wholesale & retail | 2017 |
| Hall & Hall Europe Limited | Wholesale & retail | 2018 |
| Hall & Hall Group Limited | Wholesale & retail | 2018 |
| Hall Estates 1983 Ltd | Wholesale & retail | 2025 |
| Hall Financial Strategies Ltd | Professional & scientific | 2020 |
| Hamco Flooring Ltd | Extraterritorial | 2014 |
| Hamilton Ceramics Ltd | Construction | 2014 |
| Hamlet Lettings Ltd | Real estate | 2020 |
| Hamlet Property Solutions Limited | Real estate | 2023 |
| Hammond Potatoes Ltd | Wholesale & retail | 2006 |
| Hand in Hand Professionals Ltd | Hospitality | 2011 |
| Handycraftsuk Ltd | Wholesale & retail | 2025 |