| Girl Meets Social Ltd | Professional & scientific | 2020 |
| GJH Planning Limited | Construction | 2016 |
| Gkronline Ltd | Administrative & support | 2024 |
| Gladplace Limited | Construction | 1997 |
| Glebe Farm Investments Limited | Financial services | 2024 |
| Glen Barry Limited | Real estate | 1995 |
| Glen Capital Investments Limited | Financial services | 2018 |
| Glen Farrow UK Ltd | Manufacturing | 1972 |
| Glen Heat & Irrigation Limited | Extraterritorial | 1998 |
| GLEN14 Ltd | Transport & logistics | 2024 |
| Gleneagles Drive (Woodhall Spa) Management Company Limited | Households | 2023 |
| Glenister Consultancy Limited | Information & communication | 2018 |
| Glenside Nurseries Limited | Agriculture & fishing | 1961 |
| Global Coatings Consulting Ltd | Professional & scientific | 2014 |
| Global Diatac Consultants Limited | Information & communication | 2006 |
| Global Freight Solutions (Midlands) Ltd | Transport & logistics | 2018 |
| Global Freight Spalding Ltd | Transport & logistics | 2021 |
| Global Luxury Holidays Ltd | Hospitality | 2023 |
| Global Venture Alliance Ltd | Hospitality | 2024 |
| Globaltrust Logistic Ltd | Transport & logistics | 2025 |
| Glow GUT Reset Ltd | Wholesale & retail | 2025 |
| GM Rentals Ltd | Real estate | 2022 |
| GMC Coding Solutions Limited | Manufacturing | 2012 |
| Gmedvedgroup Ltd | Transport & logistics | 2025 |
| GMK Panic Link Ltd | Transport & logistics | 2007 |
| Gmlr Transport Ltd | Transport & logistics | 2018 |
| GMS Supplies Ltd | Construction | 2018 |
| GN Moto Ltd | Transport & logistics | 2015 |
| Go Flow Drainage Ltd | Construction | 2026 |
| Go for IT! (Lincolnshire) | Administrative & support | 2025 |
| Go Right Ltd | Construction | 2021 |
| Goal Financial Planning Limited | Financial services | 2013 |
| Godfrey (Holbeach) Limited | Wholesale & retail | 2010 |
| Godfrey Properties Limited | Construction | 2022 |
| Godfreys Automotive Services Ltd | Wholesale & retail | 2021 |
| Godfreys Garage Limited | Wholesale & retail | 2024 |
| Godric Square Management Company Ltd | Households | 1989 |
| Goksa Limited | Administrative & support | 2016 |
| Gold Duck Limited | Agriculture & fishing | 2023 |
| Gold Family Club Ltd | Wholesale & retail | 2022 |
| Goldcrest Driveways Limited | Construction | 2018 |
| Golden Grouse Gundogs and Agriculture Ltd | Agriculture & fishing | 2023 |
| Golden Hand Car Wash New Ltd | Other services | 2026 |
| Golden Kitchen (2017) Ltd | Hospitality | 2017 |
| Golden LEE 2022 Ltd | Hospitality | 2022 |
| Golden Peak Roofing Ltd | Construction | 2024 |
| Golden Produce Ltd | Wholesale & retail | 2005 |
| Goldencreek.Com Limited | Professional & scientific | 2003 |
| Goldwealth Capital Limited | Financial services | 2024 |
| Goldwood (Holbeach) Limited | Professional & scientific | 1995 |
| Goldwood (Moulton) Limited | Professional & scientific | 1983 |
| Good Companions Spalding Ltd | Health & social care | 2021 |
| Good Earth Catering Ltd | Hospitality | 2024 |
| Good Hospitality Ltd | Hospitality | 2024 |
| Goodalls Accountancy & Taxation Services Limited | Professional & scientific | 2017 |
| Gorall Ltd | Transport & logistics | 2025 |
| Gorilla Civils Ltd | Construction | 2026 |
| GOS Spares Ltd | Extraterritorial | 2024 |
| Gosberton Breakers Ltd | Water & waste | 2023 |
| Gosberton Part Worn Tyres Limited | Wholesale & retail | 2012 |
| Gosberton Village Stores Ltd | Wholesale & retail | 2022 |
| Gosbury's Local Ltd | Wholesale & retail | 2025 |
| Gourmet Food Services Ltd | Administrative & support | 2002 |
| Gourmet Go Ltd | Hospitality | 2022 |
| Governiso Consulting Ltd | Information & communication | 2025 |
| GP Legacies Ltd | Professional & scientific | 2026 |
| GP Trade Ltd | Wholesale & retail | 2018 |
| GR Entertainment Ltd | Information & communication | 2025 |
| Graffiti Bar (Lincs) Ltd | Hospitality | 2023 |
| Grafters at Coningsby Limited | Wholesale & retail | 2010 |
| Graham Congreve Plumbing and Heating Limited | Construction | 2005 |
| Gramar Consulting Ltd | Professional & scientific | 2025 |
| Gramaro Properties Ltd | Financial services | 2022 |
| Gran Aggregates Limited | Mining & quarrying | 2025 |
| Grand Lodge Kingdom Ltd | Transport & logistics | 2021 |
| Grand Nino Limited | Construction | 2025 |
| Grand Taxis Boston Ltd | Transport & logistics | 2026 |
| Grange Farm (Spalding) Developments Ltd | Construction | 2022 |
| Grange Farm (Spalding) Limited | Agriculture & fishing | 2021 |
| Grange Farm Butchery Limited | Wholesale & retail | 2020 |
| Grange Homes (Holbeach) Limited | Construction | 2001 |
| Granite Consultants Limited | Professional & scientific | 2025 |
| Grant Property Investments Limited | Professional & scientific | 2017 |
| Grantham Stays Ltd | Real estate | 2024 |
| Graphite Estates Limited | Real estate | 2020 |
| Graphite Partners Limited | Administrative & support | 2017 |
| Graphite Residential Lettings Ltd | Real estate | 2022 |
| Grasmere Travel Ltd | Administrative & support | 2015 |
| Gray's Catering (Lincolnshire) Limited | Hospitality | 2021 |
| Grays Amusements Limited | Wholesale & retail | 2004 |
| Grayson Agricultural Services Ltd | Professional & scientific | 2025 |
| Grazed for Days Ltd | Hospitality | 2025 |
| Great Groundworks Limited | Construction | 2014 |
| Green & Bloom Ltd | Wholesale & retail | 2018 |
| Green and Tidy Ltd | Hospitality | 2020 |
| Green Contractors Ltd. | Construction | 2010 |
| Green Coordinate Ltd | Agriculture & fishing | 2022 |
| Green CUT Tree Services Limited | Administrative & support | 2021 |
| Green Footprints UK Limited | Administrative & support | 2009 |
| Green House Home Improvements Limited | Construction | 2022 |