| GT Search Limited | Administrative & support | 2023 |
| GT40 Aviation Ltd | Administrative & support | 2019 |
| GTB Leisure Camberley Ltd | Hospitality | 2021 |
| GTH Genie Ltd | Manufacturing | 1999 |
| GTH Private Collection Ltd | Wholesale & retail | 2023 |
| GTL Developments Ltd | Real estate | 2025 |
| GTL Homes Limited | Real estate | 2024 |
| Gtts Ltd | Real estate | 2018 |
| Guardian Health and Safety Services Ltd | Professional & scientific | 2025 |
| Guardian Preservation Services LLP | | 2003 |
| Guardian Property Maintenance Limited | Construction | 1991 |
| Guardian Waterproofing Limited | Construction | 2006 |
| Guasco & Associates Ltd | Professional & scientific | 2017 |
| Guild Residential Limited | Construction | 2011 |
| Guillam Services Limited | Other services | 2023 |
| Guilt Trip Coffee and Donuts Ltd | Hospitality | 2023 |
| Guiston Limited | Financial services | 2013 |
| Guiting Grange Sporting Club Limited | Arts & recreation | 2026 |
| Guiting Manor Farms Limited | Agriculture & fishing | 1956 |
| Gunsko Communications Limited | Professional & scientific | 2010 |
| Gupta Capital Properties Ltd | Real estate | 2025 |
| Guru Clothing Limited | Wholesale & retail | 2025 |
| Guru Coding and Calibration Ltd | Wholesale & retail | 2023 |
| GUY Webster Consulting Ltd | Administrative & support | 2019 |
| Guy's Place Limited | Wholesale & retail | 2024 |
| GV Projects Ltd | Real estate | 2007 |
| Gwithian Driftwood Ltd | Hospitality | 2019 |
| GX Landrovers Limited | Wholesale & retail | 2019 |
| GX Parts Limited | Wholesale & retail | 2019 |
| Gyawu Medical Supplies Limited | Wholesale & retail | 2020 |
| Gyde House (Painswick) Management Company Limited | Households | 2001 |
| Gymclubs SW Limited | Education | 2019 |
| Gymnaste Limited | Professional & scientific | 2024 |
| Gymstyle Limited | Wholesale & retail | 2024 |
| GZL Machinery Ltd | Manufacturing | 2012 |
| H & D Conservatories Ltd | Wholesale & retail | 2013 |
| H J FRY Consultancy Ltd | Information & communication | 2018 |
| H Monroe Limited | Construction | 2025 |
| H RES CT C.I.C. | Professional & scientific | 2019 |
| H Restaurants Ltd | Hospitality | 2020 |
| H S Cleaning Services Ltd | Administrative & support | 2019 |
| H&H Cotswold Ltd | Wholesale & retail | 2025 |
| H&H Homes West Hagbourne Ltd | Real estate | 2024 |
| H'Dg Peri Ltd | Hospitality | 2023 |
| H. & L. Motors Limited | Real estate | 1941 |
| H. Satra Limited | Real estate | 2000 |
| H.A Investment Properties Limited | Real estate | 2022 |
| H.A.Colburn and Son(Holdings) | Agriculture & fishing | 1962 |
| H.D. Masonry Ltd | Manufacturing | 2020 |
| H.L. Bowers Property Developments Ltd | Households | 2024 |
| H.M.S. Joinery Ltd. | Manufacturing | 1994 |
| H.S.H. Limited. | Professional & scientific | 1985 |
| H4UBR Limited | Health & social care | 2022 |
| HA Construct Ltd | Construction | 2026 |
| HA Holdings (Cheltenham) Limited | Financial services | 2024 |
| HA Property Investors Ltd | Real estate | 2023 |
| Haaris N Limited | Professional & scientific | 2013 |
| Haarup (U.K.) Limited | Manufacturing | 1986 |
| Haaz Design Limited | Professional & scientific | 2010 |
| Habitalis Limited | Information & communication | 2022 |
| Hackerone UK Limited | Information & communication | 2022 |
| Haddenham Fencing Ltd | Other services | 2020 |
| Hadigo Properties Limited | Real estate | 2021 |
| Hadley Garden Services Limited | Real estate | 2021 |
| Hadley James Rose Ltd | Real estate | 2025 |
| Hadron Engineering Limited | Manufacturing | 2005 |
| Haffey Group Ltd | Manufacturing | 2024 |
| Hagley Road Hotel Partnership | | 1990 |
| Hago Plaice Solutions Ltd | Hospitality | 2025 |
| Haiku Creative Ltd | Professional & scientific | 2017 |
| Hail Aspen Solutions Ltd | Professional & scientific | 2025 |
| Hailey Wood Sawmill Limited | Manufacturing | 1996 |
| Hailsham House and Operations Limited | Health & social care | 2017 |
| Hailsham Property Development Limited | Construction | 2022 |
| Haines & Strange Limited | Professional & scientific | 1940 |
| Hair Artist Ltd | Other services | 2026 |
| Hair Edit Pro Limited | Other services | 2025 |
| Hair Systems (Cheltenham) Limited | Other services | 2018 |
| Hakim Optical Services Limited | Health & social care | 2016 |
| Halcyon Care (Gloucestershire) Ltd | Administrative & support | 2021 |
| Halcyon Complex Care Ltd | Administrative & support | 2023 |
| Halcyon Consultancy Services Limited | Professional & scientific | 2025 |
| Halcyone Limited | Professional & scientific | 2010 |
| Halewell Limited | Administrative & support | 2016 |
| Halfpenny Farm Ltd | Agriculture & fishing | 2010 |
| Halfpenny Holidays Ltd | Hospitality | 2024 |
| Hall Airways Ltd | Health & social care | 2023 |
| Hall Farm Solar Bess Limited | Energy | 2023 |
| Hallaughton Grange Solar Bess Limited | Energy | 2023 |
| Halley Capital Ltd | Financial services | 2022 |
| Halogen Consultants Limited | Professional & scientific | 2020 |
| Halogen Limited | Professional & scientific | 2001 |
| Halsey Cats Limited | Real estate | 2021 |
| HAM Farm Solar Limited | Energy | 2021 |
| HAM Gate Ltd | Real estate | 2022 |
| Hama Ltd. | Administrative & support | 2000 |
| Hamblelight Limited | Agriculture & fishing | 1982 |
| Hamilton Equine Veterinary Practice Ltd | Professional & scientific | 2023 |
| Hamilton Ridge Consulting Ltd | Professional & scientific | 2025 |
| Hamilton Ridge Group Ltd | Financial services | 2025 |