| Hapol Limited | Financial services | 2020 |
| Happy Elephant Beauty Ltd | Wholesale & retail | 2025 |
| Happy Future Ltd | Professional & scientific | 2013 |
| Happy Home Support Limited | Administrative & support | 2024 |
| Happy Sprout Ltd | Wholesale & retail | 2024 |
| Happyglobal Ltd | Wholesale & retail | 2026 |
| Harbour Buildings Limited | Real estate | 2019 |
| Harbour Facade Systems Ltd | Construction | 2009 |
| Harc Builders and Maintenance Ltd | Construction | 2026 |
| Harding Heating & Renewables Limited | Construction | 2024 |
| Hardings Hair & Beauty Salon Ltd | Other services | 2016 |
| Hardwicke Property Developments Ltd | Construction | 2012 |
| Hare Lane Ltd | Hospitality | 2018 |
| Harescombe Nurseries Limited | Wholesale & retail | 2006 |
| Haresfield Plant Hire Limited | Administrative & support | 1992 |
| Hargreaves Holiday Homes Ltd | Hospitality | 2021 |
| Haril Integrated Services Limited | Real estate | 2022 |
| Harjam Innovations Limited | Manufacturing | 2017 |
| Harlew Ltd | Real estate | 2022 |
| Harley Executive Travel Limited | Transport & logistics | 2024 |
| Harleywood Haulage Limited | Transport & logistics | 2000 |
| Harleywood International Limited | Extraterritorial | 2008 |
| Harleywood Limited | Transport & logistics | 2005 |
| Harper Music Ltd | Information & communication | 2018 |
| Harper Wynn Electrical Ltd | Construction | 2014 |
| Harrington Management Consulting Ltd | Professional & scientific | 2018 |
| Harris & Green Limited | Construction | 2008 |
| Harris & Skye Ltd | Hospitality | 2025 |
| Harris Fencing & Landscapes Ltd | Administrative & support | 2019 |
| Harrison James Signature Properties Limited | Real estate | 2026 |
| Hart Builds & Restoration Ltd | Construction | 2025 |
| Hart Expert Ltd | Wholesale & retail | 2015 |
| Hartford IT Services Limited | Extraterritorial | 2013 |
| Hartington Software Limited | Information & communication | 2004 |
| Hartley Court Pitville Circus Road Management Limited | Households | 2008 |
| Hartmore Genesis Limited | Education | 2023 |
| Hartpury Construction Limited | Construction | 2009 |
| Hartpury Heritage Trust | Manufacturing | 1998 |
| Hartpury Rugby Limited | Arts & recreation | 2017 |
| Hartwell Group Ltd | Financial services | 2026 |
| Hartwick Alvin Ltd | Real estate | 2024 |
| Hartwick Dell Ltd | Construction | 2024 |
| Hartwick Ltd | Financial services | 2024 |
| Hartwick Stratford Ltd | Construction | 2025 |
| Harvest Creative Media Ltd | Information & communication | 2010 |
| Harvest Innovations Limited | Financial services | 2026 |
| Hash & Aaron Ltd | Hospitality | 2020 |
| Hashu Enterprises Ltd | Wholesale & retail | 2025 |
| Hastie Studios Ltd | Professional & scientific | 2023 |
| Hats Gloucester Ltd. | Professional & scientific | 1999 |
| Hattch Design Limited | Professional & scientific | 2016 |
| Havebetter Limited | Wholesale & retail | 2026 |
| Haven Court (Gloucester) Maintenance Limited | Households | 1970 |
| Havenix Services Limited | Administrative & support | 2025 |
| Havenwell Healthcare Services Ltd | Administrative & support | 2026 |
| Hawkstone Design EOT Limited | Extraterritorial | 2024 |
| Hawkstone Design Limited | Information & communication | 2010 |
| Hawkstone Property Ltd | Real estate | 2023 |
| Hawkwood Developments Limited | Construction | 1963 |
| Haworth Holdings Ltd | Administrative & support | 2022 |
| Hayden Douglas Limited | Administrative & support | 2023 |
| Hayes & Hughes Electrical Limited | Construction | 2025 |
| Hayes Farm Holidays Ltd | Hospitality | 2022 |
| Haylands Stud Ltd | Agriculture & fishing | 2013 |
| Hayling Island Investments Limited | Financial services | 2020 |
| Hayward Cleaning Services Ltd | Administrative & support | 2003 |
| Haywards Gate Management Company Limited | Households | 2005 |
| Hayway Limited | Professional & scientific | 2003 |
| Haze Human Performance Ltd | Education | 2024 |
| Hazel & Jayne Ltd | Professional & scientific | 2025 |
| Hazelsparkle Ltd | Administrative & support | 2025 |
| Hazul Enterprise Ltd | Wholesale & retail | 2021 |
| HB Carpentry (Cheltenham) Limited | Construction | 2023 |
| HC & LJ Properties Limited | Real estate | 2021 |
| HC 1113 Limited | Professional & scientific | 2009 |
| HC 1216 Limited | Professional & scientific | 2013 |
| HC 1271 Limited | Wholesale & retail | 2016 |
| HCE Properties (Gloucester) Ltd | Real estate | 2023 |
| Hcgi Business Brokerage (SW) Ltd | Extraterritorial | 2019 |
| Hcgi Business Brokerage Ltd | Extraterritorial | 2016 |
| HDF Property Management Limited | Households | 2025 |
| HDS Truck Services Limited | Wholesale & retail | 2023 |
| Head Ruddy Limited | Real estate | 2002 |
| Headway Cotswold Trust Limited | Health & social care | 1988 |
| Healing Quest Limited | Health & social care | 2003 |
| Health and Care Management Solutions Ltd | Information & communication | 2023 |
| Health Experiences International | Health & social care | 2013 |
| Health Technical Ltd | Professional & scientific | 2013 |
| Health Valued Ltd | Information & communication | 2024 |
| Healthbridge Occupational Health Ltd | Health & social care | 2025 |
| Healthcare Housing Limited | Real estate | 2024 |
| Healthplus Group Ltd | Administrative & support | 2026 |
| Healthy Smile Solutions Ltd | Health & social care | 2025 |
| Heart of Gloucester Auctions Ltd | Wholesale & retail | 2018 |
| Heartstone Property Ltd | Real estate | 2021 |
| Heartz Ltd | Extraterritorial | 2024 |
| Heat for Events Ltd | Administrative & support | 2018 |
| Heat Haven Limited | Energy | 2021 |
| Heather Butler Equine Services Limited | Administrative & support | 2001 |
| Heather Housing Limited | Health & social care | 2011 |