| Giant Capital Limited | Financial services | 2025 |
| Giant Commercial Ltd | Transport & logistics | 2020 |
| Giant Peaches Group Ltd | Professional & scientific | 2025 |
| Giant Steps (River Bourne Farm) Limited | Education | 2016 |
| Giant Steps (Yexley) Limited | Education | 2009 |
| Giant Storage Ltd. | Transport & logistics | 2018 |
| Giant Toy Store Ltd | Wholesale & retail | 2024 |
| Giant Transport Ltd | Transport & logistics | 2023 |
| Gilbert Garden Centre Limited | Real estate | 1962 |
| Gilded Herring Limited | Wholesale & retail | 2008 |
| Gilden Green Management Company Limited | Households | 2020 |
| Giles Chiplin Productions Limited | Arts & recreation | 2016 |
| Giles Lewis and Co Limited | Construction | 2017 |
| Gill Goddard Hair Ltd | Other services | 2014 |
| Gillingham Garden Machinery Limited | Wholesale & retail | 2017 |
| Gilly Beans Ltd | Other services | 2010 |
| Ginger Cat Ltd | Information & communication | 2009 |
| Ginny Bing Ltd. | Information & communication | 2002 |
| Ginny's Dairy Ltd | Wholesale & retail | 2022 |
| Giraffe Reward Ltd | Administrative & support | 2017 |
| GJ Booth Maintenance Services Limited | Construction | 2006 |
| GJA Auto Services Ltd | Wholesale & retail | 2013 |
| Gladheath Limited | Real estate | 1997 |
| Glas Data Ltd | Information & communication | 2018 |
| Glass Agency Ltd | Information & communication | 2019 |
| Glass Half Limited | Information & communication | 2026 |
| GLC Cloud Limited | Financial services | 2022 |
| Glebe Antiques Limited | Wholesale & retail | 2021 |
| Glebe Farm Stud Limited | Agriculture & fishing | 1987 |
| Glede Ltd | Real estate | 2026 |
| Glendine Holdings Limited | Financial services | 2018 |
| Glendine UK Estates Limited | Professional & scientific | 2018 |
| Glenmore (Telford Road Salisbury) Management Limited | Real estate | 2003 |
| Glenmore Business Park (Andover) Limited | Real estate | 2002 |
| Glenside Gardens Management Company (Salisbury) Limited | Real estate | 2001 |
| Glenside Homes Limited | Construction | 2001 |
| Glenvale Park (Wellingborough) Management Company Limited | Households | 2021 |
| GLF Group Salisbury Ltd | Construction | 2023 |
| GLF Group Southern Ltd | Construction | 2024 |
| Global Admin Services Limited | Financial services | 2013 |
| Global Amenities Direct Limited | Manufacturing | 2013 |
| Global Art Supplies Limited | Wholesale & retail | 1999 |
| Global Atlantic Ventures Limited | Information & communication | 2020 |
| Global Conversions Limited | Wholesale & retail | 2025 |
| Global Group Racing Limited | Arts & recreation | 2019 |
| Global Health Education Partnership Limited | Manufacturing | 2010 |
| Global Healthcare Projects | Professional & scientific | 2004 |
| Global Impex Private Limited | Wholesale & retail | 2024 |
| Global JOB Boards Limited | Administrative & support | 2012 |
| Global TS Consulting Services Limited | Professional & scientific | 2025 |
| Gloster Court (Segensworth) Limited | Households | 1991 |
| Gloucester Square Management Company Limited | Real estate | 2002 |
| Glover & Smith Limited | Manufacturing | 2007 |
| Glow & TAN Ltd | Manufacturing | 2026 |
| Glow Choice Services Ltd | Administrative & support | 2023 |
| GLT Automotive Ltd | Professional & scientific | 2026 |
| GM Networks Limited | Construction | 2005 |
| GMC Maintenance & Scaffolding Ltd | Construction | 2011 |
| Gmii Limited | Hospitality | 2022 |
| Gmls Consultancy Limited | Information & communication | 2022 |
| GMS Partnership Ltd | Professional & scientific | 2022 |
| Gmug Ltd | Financial services | 2025 |
| GNL Consultant Ltd | Professional & scientific | 2024 |
| Gnomon Construction Ltd | Professional & scientific | 2015 |
| Go Macro Ltd | Information & communication | 2015 |
| Go Sailing Ltd | Transport & logistics | 2019 |
| Go Surgical Limited | Health & social care | 2019 |
| Go Travel Services Limited | Transport & logistics | 2025 |
| Go Vehicle Management Limited | Administrative & support | 2025 |
| Go-Mow Limited | Extraterritorial | 2015 |
| GO2GAS Solutions Limited | Construction | 2017 |
| Goblin GT Ltd | Extraterritorial | 2025 |
| Goddard Mews Management Company Limited | Households | 2010 |
| Goffen Music Schools Ltd | Education | 2024 |
| Gofly Limited | Arts & recreation | 2013 |
| Gold Coast Groceries Ltd | Wholesale & retail | 2020 |
| Golden Acorns PRE School Ltd | Health & social care | 2023 |
| Golden AGE Golf Architecture Ltd | Professional & scientific | 2007 |
| Golden Copy Marketing Limited | Professional & scientific | 2024 |
| Golden Fleece PUB Company Limited | Hospitality | 2025 |
| Golden Rosbar Limited | Health & social care | 2009 |
| Golden Touch Beauty Saloon Ltd | Other services | 2025 |
| Golden Valley Colours Limited | Professional & scientific | 1968 |
| Goldhill Glazing Limited | Construction | 2025 |
| Goldmarque Consulting Limited | Professional & scientific | 2010 |
| Goldsworthy Limited | Wholesale & retail | 2016 |
| Goldthorp Avenue Apartments Management Company Limited | Households | 2017 |
| Goldust Cleaning (Salisbury) Ltd | Administrative & support | 2021 |
| Golf Car UK Ltd | Wholesale & retail | 2002 |
| Golwg Y Glyn (Fforest) Management Company Limited | Households | 2020 |
| Golygfa O'R Bwlch Management Company Limited | Households | 2019 |
| Good Chice Food Ltd | Hospitality | 2026 |
| Good HR Limited | Administrative & support | 2013 |
| Goodbite Co. Enford Ltd | Hospitality | 2024 |
| Goodone Holdings Limited | Professional & scientific | 2009 |
| Gorget Limited | Professional & scientific | 2023 |
| Gorselands in the Forest Limited | Administrative & support | 2004 |
| Gosh Plumbing Services Ltd | Construction | 2014 |
| Goskydive Cambridge Ltd | Arts & recreation | 2020 |
| Goskydive.Co.Uk Limited | Arts & recreation | 2012 |