| Flaming Flash Cleaning Limited | Administrative & support | 2023 |
| Flat Roofing Lincs Ltd | Construction | 2019 |
| Flattley Limited | Manufacturing | 2016 |
| Flaxwell Fields Maintenance Limited | Households | 2021 |
| Fleet Accounting Solutions Limited | Professional & scientific | 2021 |
| Fleet Mitigation Solutions Ltd | Wholesale & retail | 2025 |
| Flo-Drive Technology Limited | Real estate | 2015 |
| Flooring by Henton Limited | Wholesale & retail | 2005 |
| Flowers and Ferns Limited | Wholesale & retail | 2022 |
| Fluffydodo Ltd | Professional & scientific | 2022 |
| FMR Johannson Limited | Real estate | 2024 |
| Focus Young People Limited | Education | 2024 |
| Foks Holdings Ltd | Financial services | 2024 |
| Folkingham Agriservices Ltd | Agriculture & fishing | 2011 |
| Folkingham Creative Arts Ltd | Arts & recreation | 2022 |
| Forest Medical Group Ltd | Health & social care | 2023 |
| Forget ME NOT Home Care Ltd | Health & social care | 2016 |
| Forty Seven Jewellery Ltd | Manufacturing | 2024 |
| Foxhall Veterinary Clinic (Lincs) Ltd | Professional & scientific | 2025 |
| Foxhall Veterinary Clinic LLP | | 2007 |
| Frailty Care Ltd | Health & social care | 2023 |
| Frankish Ltd | Information & communication | 2026 |
| Franklin Building Services Limited | Construction | 2018 |
| Freedom Bathroom Solutions Ltd | Construction | 2019 |
| Freight Lincs Ltd | Administrative & support | 2024 |
| Freshstartcleaninglincs Ltd | Administrative & support | 2022 |
| Friezeland Properties Ltd | Real estate | 2024 |
| Friwin Ltd. | Other services | 2015 |
| From the Farm Limited | Administrative & support | 2017 |
| Frost Rigging Services Ltd | Information & communication | 2023 |
| FSS Holdings Limited | Financial services | 2025 |
| Full on Joinery Ltd | Construction | 2020 |
| Future Energy Propositions Limited | Professional & scientific | 2025 |
| G Simpson Butchers Limited | Wholesale & retail | 2003 |
| G. Shields & SON Community Interest Company | Arts & recreation | 2001 |
| Gallery Walk Limited | Construction | 2022 |
| GALLERY34 Ltd | Manufacturing | 2021 |
| Gamenese Limited | Extraterritorial | 2025 |
| Ganjoil Ltd | Wholesale & retail | 2018 |
| Garage Pro Solutions Ltd | Wholesale & retail | 2024 |
| Gardentap Ltd | Hospitality | 2025 |
| Gardiner Music Limited | Education | 2014 |
| Gaynor Edwards ANP Ltd | Health & social care | 2022 |
| GC Assessments Ltd | Professional & scientific | 2018 |
| GC Sleaford Limited | Hospitality | 2022 |
| GCH Equine Services Ltd | Agriculture & fishing | 2023 |
| GCM Contracting Ltd | Transport & logistics | 2020 |
| GCM Griffin Parts Ltd | Wholesale & retail | 2021 |
| Geeedubya Ltd | Information & communication | 2020 |
| General Practice Management | Other services | 2021 |
| General Project Safety Services Ltd | Professional & scientific | 2011 |
| GEO Property Limited | Real estate | 2019 |
| Gerri's Limited | Wholesale & retail | 2004 |
| GET on Fast Ltd | Information & communication | 2002 |
| GET Radio Airplay Limited | Information & communication | 2025 |
| GH Window Cleaners Limited | Administrative & support | 2024 |
| GHM Telecommunications Ltd | Information & communication | 2026 |
| Gieksa Ltd | Transport & logistics | 2018 |
| Gift Shopping Limited | Wholesale & retail | 2021 |
| Ginger Mango Investments Limited | Financial services | 2024 |
| GJ Traders Ltd | Wholesale & retail | 2020 |
| GLM Apps Ltd | Wholesale & retail | 2025 |
| Global Cover Solutions Ltd | Wholesale & retail | 2017 |
| Glow Inflatables Limited | Manufacturing | 2017 |
| Glow Suntan Centre Ltd | Other services | 2022 |
| Gluggle Limited | Wholesale & retail | 2009 |
| Gnhra Limited | Real estate | 2026 |
| GNS Markets Ltd | Wholesale & retail | 2025 |
| Go JAM Productions Ltd | Administrative & support | 2024 |
| Golden Apple Solutions Ltd | Information & communication | 2021 |
| Golding Young Limited | Administrative & support | 2010 |
| Gorgeous Suntan Centre Limited | Other services | 2016 |
| Gowai Ltd | Information & communication | 2026 |
| GQ Advisory Ltd | Professional & scientific | 2022 |
| Graby Farm,Limited | Agriculture & fishing | 1939 |
| Gradeas Consulting Limited | Professional & scientific | 2017 |
| Graham Stokes Music Management Limited | Professional & scientific | 2006 |
| Grange Farmers Limited | Agriculture & fishing | 2011 |
| Grantham Payroll Services Limited | Administrative & support | 2017 |
| Graylight Entertainment Limited | Information & communication | 2026 |
| Great FEN Day Nursery Ltd | Health & social care | 2016 |
| Great Wood Farm Early Years Centre Limited | Education | 2016 |
| Green Cleen (Lincolnshire) Limited | Administrative & support | 2022 |
| Green Planet Products Limited | Financial services | 2001 |
| Greenfinch Holdings Ltd | Extraterritorial | 2020 |
| Greenfinch Homes Ltd | Construction | 2016 |
| Grey Mechanics Ltd | Manufacturing | 2016 |
| Greyhound Property Management Company Limited | Households | 2007 |
| Greylees Limited | Agriculture & fishing | 2001 |
| Greyspot Web Solutions Ltd | Information & communication | 2008 |
| Grove 1972 Limited | Extraterritorial | 2013 |
| Growing Fingers Limited | Education | 2015 |
| Grubz Afro-Carribean Foods Ltd | Wholesale & retail | 2025 |
| GSW Management Solutions Limited | Professional & scientific | 2021 |
| GTR Media Ltd | Information & communication | 2024 |
| Gungadin Technology Ltd | Information & communication | 2023 |
| Gurkha 19 Restaurant Ltd | Hospitality | 2024 |
| GW Jetwash Solutions Ltd | Administrative & support | 2025 |
| H & L Services Ltd | Professional & scientific | 2015 |
| H a B Leadworks Limited | Construction | 2019 |