| Gintautas Transport Ltd | Transport & logistics | 2017 |
| Giraffe Boutique Limited | Extraterritorial | 2015 |
| Giraffe Hampers Limited | Extraterritorial | 2020 |
| Gjecom Ltd | Wholesale & retail | 2025 |
| GK Business Consulting Ltd | Information & communication | 2025 |
| GK Pubs Ltd | Hospitality | 2024 |
| Glamm Properties Ltd | Real estate | 2023 |
| Glamorous Forever UK Ltd | Other services | 2020 |
| Glampods Shepherd Huts Ltd | Manufacturing | 2022 |
| Glass Glazing & Windows (UK) Ltd | Construction | 2013 |
| Glass Glazing Services Limited | Construction | 2023 |
| Glasshammer Gaming Ltd | Wholesale & retail | 2015 |
| Glasshammer TCG Ltd | Wholesale & retail | 2026 |
| Glaston UK Limited | Manufacturing | 1989 |
| Glastonbury Calling Limited | Information & communication | 2025 |
| GLD Roofing Services Ltd | Construction | 2026 |
| GLD Single PLY Limited | Construction | 2019 |
| Gleaming Services Limited | Administrative & support | 2017 |
| Glenbury Residents Association Limited | Real estate | 1990 |
| Glevs Ltd | Wholesale & retail | 2024 |
| Global Freight Services Limited | Transport & logistics | 1996 |
| Global Icon Limited | Administrative & support | 2018 |
| Global Manna Ltd | Wholesale & retail | 2025 |
| Global Minds Asset Management Limited | Real estate | 2019 |
| Global Minds Limited | Information & communication | 2010 |
| Global Minds Software Limited | Administrative & support | 2017 |
| Global Quality Control Limited | Construction | 2014 |
| Glover Brothers Limited | Extraterritorial | 2022 |
| Glow Haus Cleaning Ltd | Administrative & support | 2025 |
| Glyn Upton Removals Limited | Extraterritorial | 2001 |
| GM Properties & Investments Limited | Real estate | 2025 |
| GM Sraan Ltd | Wholesale & retail | 2024 |
| GN Civils Limited | Construction | 2024 |
| GNC Technology Ltd | Information & communication | 2013 |
| Go Green Gardens Ltd | Administrative & support | 2025 |
| Go Sharepoint Limited | Information & communication | 2023 |
| GO2UNI Limited | Education | 2026 |
| Goddards Fine Food & Catering Limited | Hospitality | 2014 |
| Gogreen Managed Services Ltd | Administrative & support | 2007 |
| Gold Cabs Ltd | Transport & logistics | 2022 |
| Gold Estate Agents Ltd | Real estate | 2023 |
| Gold Star Nursery Holdings Limited | Financial services | 2025 |
| Goldcrest Property Ltd | Real estate | 2023 |
| Golden AGE Promotions Ltd | Information & communication | 2003 |
| Golden Chords Entertainment Limited | Information & communication | 2026 |
| Golden Harvest Homes Limited | Real estate | 2021 |
| Golden Home Services Ltd | Real estate | 2025 |
| Golden Support Solutions (UK) Limited | Administrative & support | 2023 |
| Goldencompany Ltd | Information & communication | 2019 |
| Goldheart 1 Ltd | Financial services | 2026 |
| Goldheart Enterprises Ltd | Professional & scientific | 2024 |
| Goldheart Group Holdings (UK) Ltd | Financial services | 2026 |
| Goldstrom Limited | Professional & scientific | 2012 |
| Golf Spikes Direct Ltd | Arts & recreation | 2017 |
| Good Goods Online Ltd | Other services | 2025 |
| Good Life Wealth Consultancy Limited | Financial services | 2019 |
| Good Lucky Ltd | Professional & scientific | 2018 |
| Goods Direct Europe Ltd | Water & waste | 2021 |
| Goods Direct Holdings Limited | Financial services | 2021 |
| Goodwin Property Investments Limited | Real estate | 2020 |
| Goody Limited | Professional & scientific | 2019 |
| Googlicious Baby Limited | Wholesale & retail | 2020 |
| Goose on the Loose Ltd | Extraterritorial | 2010 |
| Gorilla Workwear Limited | Wholesale & retail | 2011 |
| Goshen Apartments UK Ltd | Hospitality | 2018 |
| Gospo Serv Ltd | Manufacturing | 2026 |
| GP Energy and Technology Limited | Professional & scientific | 2015 |
| GPS 1969 Limited | Transport & logistics | 2021 |
| GPS Property Ltd | Real estate | 2015 |
| Gptnt Ltd | Transport & logistics | 2018 |
| GR Gains Club Ltd | Manufacturing | 2020 |
| Gra-Bern Electrical Ltd | Construction | 2013 |
| Grace & Abide Ltd | Wholesale & retail | 2024 |
| Grace Amelia Properties Limited | Real estate | 2019 |
| Grace Care Co Limited | Health & social care | 2024 |
| Grace Gate Living Ltd | Health & social care | 2026 |
| Grafted Services LLP | | 2025 |
| Grai Properties Limited | Real estate | 2024 |
| Gramac Media and Marketing Ltd | Professional & scientific | 2025 |
| Gramef Digital Solutions Ltd | Information & communication | 2026 |
| Grand Homes Midlands Ltd | Transport & logistics | 2020 |
| Grand Prix Marine Ltd | Wholesale & retail | 2018 |
| Grandmar Ltd | Other services | 2019 |
| Grandverge Residents Association Limited | Arts & recreation | 1984 |
| Grange Farm Management (Redhill) Ltd | Households | 2019 |
| Grange Hall Developments Limited | Wholesale & retail | 2006 |
| Granlund (U.K.) Ltd. | Wholesale & retail | 2002 |
| Granorte (UK) Limited | Wholesale & retail | 2007 |
| Gratitude Cafe Ltd | Hospitality | 2020 |
| Graymun Limited | Administrative & support | 2018 |
| Grays Hotel Telford Limited | Hospitality | 2007 |
| Grays of Shropshire Limited | Hospitality | 2016 |
| Great British Envelopes Ltd | Manufacturing | 2012 |
| Great Deals Ltd | Wholesale & retail | 2023 |
| Great Expectations Shropshire Ltd | Administrative & support | 2025 |
| Green Archers Ltd | Other services | 2019 |
| Green Careers Ltd | Information & communication | 2017 |
| Green Fields Farm Shop Limited | Wholesale & retail | 2008 |
| Green Power and Heat Limited | Construction | 2011 |
| Green Way Midlands Ltd | Administrative & support | 2025 |