| Gent-Menswear Limited | Wholesale & retail | 2019 |
| Geometry Consulting Ltd | Professional & scientific | 2025 |
| George Court (Bournemouth) Limited | Households | 2006 |
| George Fisher & Sons (1987) Limited | Manufacturing | 1988 |
| Georgi Lift Ltd | Construction | 2022 |
| Georgia Enterprise Ltd | Transport & logistics | 2019 |
| Germany Chickens Holding Limited | Financial services | 2024 |
| Germany Chickens Limited | Agriculture & fishing | 2024 |
| Germany Farms Holdings Limited | Financial services | 2024 |
| Germany Farms Limited | Agriculture & fishing | 1989 |
| Germany Solar Holding Limited | Financial services | 2024 |
| Germany Solar Limited | Energy | 2024 |
| Gervic Traders Ltd | Construction | 2026 |
| GET Wise Enterprise C.I.C. | Education | 2017 |
| Gewete Cash Handling Technology UK Ltd | Administrative & support | 2024 |
| Gibson Electrical Ltd | Construction | 2025 |
| Gifts From Fairies Ltd | Other services | 2023 |
| Giggles of Gedney Hill Limited | Education | 2013 |
| Gigi Automotive Ltd | Wholesale & retail | 2023 |
| Gillespie Holdings (UK) Limited | Professional & scientific | 2011 |
| Gilliatt Family Holdings Ltd | Financial services | 2026 |
| Gillivers Haulage Limited | Transport & logistics | 2003 |
| Ginger Dog CIC | Arts & recreation | 2025 |
| Giri and Lamby Estates Ltd | Real estate | 2024 |
| Giri&Co Ltd | Real estate | 2025 |
| Girl and a GAY UK Ltd | Information & communication | 2025 |
| GK Commercials Ltd | Real estate | 2024 |
| GL Property Living Ltd | Real estate | 2025 |
| Glamorous Aesthetics Ltd | Other services | 2018 |
| Glebe Stone Sales Limited | Mining & quarrying | 2003 |
| GLO Skin Beauty Uk&I Ltd | Wholesale & retail | 2023 |
| Global Connections Hub Limited | Wholesale & retail | 2023 |
| Global Ingredients Limited | Manufacturing | 2007 |
| Global Pharma Solutions Limited | Administrative & support | 2025 |
| Global Reach Advisory Limited | Professional & scientific | 2025 |
| Global Star Consultancy Ltd | Information & communication | 2024 |
| Gloss Salon Ltd | Other services | 2024 |
| Glosscalm Limited | Construction | 2022 |
| Glosscalm Training Services Ltd | Education | 2025 |
| Glow Flow Therapies Ltd | Health & social care | 2025 |
| Gmlk and Co Limited | Agriculture & fishing | 2026 |
| GMP Cladding Limited | Construction | 2025 |
| Gnpt Limited | Arts & recreation | 2025 |
| GNR Plant Services Limited | Manufacturing | 2019 |
| GNT Hospitality Ltd | Hospitality | 2023 |
| Go Go Communications Limited | Information & communication | 2021 |
| Go Hire Motorhomes Ltd | Administrative & support | 2022 |
| God's Handprint Limited | Wholesale & retail | 2025 |
| Godwin Consultancy Services Limited | Professional & scientific | 2025 |
| Goggins Property Ltd | Real estate | 2026 |
| Gogo Investments Limited | Real estate | 2019 |
| Gold Standard Medical Ltd | Wholesale & retail | 2023 |
| Gold Sun Ltd | Other services | 2025 |
| Gold Sun Studio Ltd | Other services | 2025 |
| Goldcrest Land & Estates Limited | Real estate | 2025 |
| Golden AGE TV LLP | | 2018 |
| Goldie Estates Ltd | Real estate | 2018 |
| Goldstone Properties Limited | Real estate | 2021 |
| Golfpod Limited | Arts & recreation | 2019 |
| Gono Prime Cleaners Ltd | Administrative & support | 2025 |
| Good Launch Ltd | Professional & scientific | 2022 |
| Good News Music Limited | Information & communication | 2024 |
| Good News World Ltd | Wholesale & retail | 2018 |
| Goodman Equine Limited | Administrative & support | 2008 |
| Gordon Family Property Ltd | Real estate | 2016 |
| Gorilla MAN Fitness C.I.C. | Arts & recreation | 2024 |
| Gorman's Restaurants Limited | Hospitality | 2019 |
| Gorst Management Limited | Professional & scientific | 2002 |
| Gothrills Ltd | Wholesale & retail | 2020 |
| Gotpadelclub Ltd | Arts & recreation | 2025 |
| Governors House Cafe & Deli Ltd | Hospitality | 2025 |
| Governors House Community Hub CIC | Education | 2026 |
| GPM Powder Coating Limited | Manufacturing | 2025 |
| Gracegentle Limited | Wholesale & retail | 2012 |
| Gracie Barra Newark Ltd | Education | 2023 |
| Grade 1966 Limited | Professional & scientific | 2011 |
| Graham Sykes Holdings Limited | Financial services | 2007 |
| Graham Sykes Limited | Financial services | 2002 |
| Grainger Securities Limited | Real estate | 2001 |
| Grandslam Holdings Limited | Hospitality | 2017 |
| Grange Farming (Barlings) Limited | Energy | 2010 |
| Grange Farming Company | Agriculture & fishing | 2007 |
| Grange Geoconsulting Limited | Professional & scientific | 2013 |
| Grange Solutions Inc Limited | Administrative & support | 2025 |
| Grant & Green Limited | Real estate | 1970 |
| Grant Airconditioning & Ventilation Limited | Energy | 2003 |
| Grant Projects Limited | Construction | 2025 |
| Grant-A-Domestics Limited | Financial services | 1998 |
| Grapevine S.E. Ltd | Professional & scientific | 2010 |
| Grapevine Ventures Ltd | Information & communication | 2014 |
| Graphrun Limited | Administrative & support | 1994 |
| Grasshopper Golfkarts Limited | Manufacturing | 2004 |
| Grays Elite Ltd | Transport & logistics | 2022 |
| Graze Days Ltd | Hospitality | 2020 |
| Greatland Limited | Professional & scientific | 2005 |
| Green Dragon Court (Luton) Management Company Limited | Households | 2002 |
| Green Fashion Logistics Ltd | Water & waste | 2024 |
| Green Key Restoration Ltd | Construction | 2022 |
| Green Loos Limited | Administrative & support | 2007 |
| Green Olive Newark Limited | Hospitality | 2020 |