| Hutton Developments (Bristol) Limited | Real estate | 2025 |
| Huttonn Limited | Wholesale & retail | 2025 |
| Huvepharma Limited | Wholesale & retail | 2020 |
| HUW Lewis Ltd | Extraterritorial | 2022 |
| Huxley Studios Ltd | Information & communication | 2015 |
| HV Dwellings Limited | Real estate | 2021 |
| HV Scents Limited | Manufacturing | 2025 |
| HVG Lyfe LLP | | 2025 |
| HVS Properties Ltd | Real estate | 2024 |
| HW Consulting Limited | Manufacturing | 2018 |
| HW Groundworks Limited | Other services | 2025 |
| HW Integral Ltd | Information & communication | 2011 |
| HW Regulatory Solutions Ltd | Professional & scientific | 2016 |
| HW Solar Farm Limited | Energy | 2021 |
| Hwanandbrothers Limited | Administrative & support | 2025 |
| HWH Investments Limited | Real estate | 2023 |
| HWS Properties Limited | Real estate | 2022 |
| HWT Recruitment Limited | Administrative & support | 2022 |
| Hyak Limited | Construction | 1999 |
| Hybrid Car Repairs Bristol Ltd | Wholesale & retail | 2019 |
| Hybrid Energy Limited | Construction | 2020 |
| Hybrid News Limited | Professional & scientific | 2009 |
| Hybrid Progress Ltd | Arts & recreation | 2026 |
| Hybrid Response Limited | Manufacturing | 2022 |
| Hycura Europe Limited | Other services | 2025 |
| Hycura International Ltd | Other services | 2023 |
| Hyde & CAL Services Ltd | Manufacturing | 2019 |
| Hyde and Co Leisure Ltd | Hospitality | 2010 |
| Hyde House Hotel Limited | Hospitality | 1970 |
| Hyde Park Spirits Ltd | Financial services | 2020 |
| Hyder Motors Ltd | Wholesale & retail | 2025 |
| Hydes of Bristol LLP | | 2022 |
| Hydra Build Ltd | Construction | 2021 |
| Hydrate for Health Limited | Health & social care | 2007 |
| Hydro Holdings UK Limited | Financial services | 1997 |
| Hydro Kinetics Limited | Professional & scientific | 2010 |
| Hydro Pension Trustee Limited | Professional & scientific | 1981 |
| Hydrock Holdings Limited | Professional & scientific | 2017 |
| Hydrogen Capital Ltd | Real estate | 2024 |
| HYDROL8 Ltd. | Water & waste | 2020 |
| Hydrolize Limited | Construction | 2019 |
| Hydronic Design Ltd | Professional & scientific | 2025 |
| Hydronium Energies Limited | Professional & scientific | 2024 |
| Hydroscand Ltd. | Wholesale & retail | 2002 |
| Hydrospace Geophysics Ltd | Professional & scientific | 2025 |
| Hygenius Ltd | Administrative & support | 2017 |
| Hygge and Haven Ltd | Real estate | 2021 |
| Hygiene Craft Ltd | Administrative & support | 2025 |
| Hygiene Depot Limited | Professional & scientific | 2001 |
| Hylton Brown Legal Services Ltd | Professional & scientific | 2023 |
| Hynan Surveys Ltd | Professional & scientific | 2026 |
| Hype International Sound Ltd | Other services | 2026 |
| Hyper Alley Limited | Administrative & support | 2001 |
| Hyper Hound Ltd | Wholesale & retail | 2024 |
| Hyperion Rating Ltd | Administrative & support | 2025 |
| Hyperix Ltd | Information & communication | 2000 |
| Hyperpoint Ltd | Information & communication | 2024 |
| Hypersky Ltd | Professional & scientific | 2025 |
| Hypha Productions Ltd | Professional & scientific | 2026 |
| Hypnotik Ltd | Information & communication | 2011 |
| Hyraem Limited | Wholesale & retail | 2025 |
| Hyre Fitness Ltd | Arts & recreation | 2018 |
| Hysa Agents Ltd | Real estate | 2025 |
| Hytsioaboa Software Limited | Information & communication | 2025 |
| HZ Property Developments Limited | Real estate | 2021 |
| I & M Decorating Limited | Construction | 2018 |
| I & S Dynamic Property Ltd | Real estate | 2020 |
| I . C. Whittard Joinery Ltd | Manufacturing | 2014 |
| I a Hourani Ltd | Transport & logistics | 2018 |
| I Access Ltd | Construction | 2020 |
| I AM a Melaninaire Ltd | Education | 2025 |
| I AM ALL Stories Ltd | Health & social care | 2020 |
| I AM I.T. Limited | Extraterritorial | 2008 |
| I AM IT 4 Limited | Extraterritorial | 2010 |
| I AM IT for U Limited | Extraterritorial | 2010 |
| I AM Made Ltd | Manufacturing | 2011 |
| I AM Michelangelo Ltd | Professional & scientific | 2022 |
| I and E Group Ltd | Construction | 2018 |
| I and M Services Limited | Construction | 2004 |
| I C Events Limited | Arts & recreation | 2016 |
| I C Express Limited | Transport & logistics | 2003 |
| I C Fleet Services Limited | Wholesale & retail | 2015 |
| I C Mathison Limited | Extraterritorial | 2009 |
| I C Refrigeration Ltd | Manufacturing | 2017 |
| I Caci & Co Ltd | Real estate | 2019 |
| I Cloud Bristol Ltd | Wholesale & retail | 2023 |
| I D Developments SW Ltd | Other services | 2025 |
| I D H Ecology Ltd | Administrative & support | 2018 |
| I D Recycling and Confidential Destruction Ltd | Water & waste | 2018 |
| I Electrical Limited | Construction | 2007 |
| I Fit in Ltd | Professional & scientific | 2020 |
| I Gifts Ltd | Wholesale & retail | 2016 |
| I GOT Teched Limited | Other services | 2022 |
| I H Flooring Ltd | Wholesale & retail | 2016 |
| I Have NO Idea Bubbles Limited | Construction | 2024 |
| I Have NO Idea Limited | Real estate | 2022 |
| I Hub Trading (WBT) Limited | Wholesale & retail | 2024 |
| I Hunt Consulting Ltd | Professional & scientific | 2025 |
| I Link Couriers Ltd | Extraterritorial | 2014 |
| I Love My PC Limited | Wholesale & retail | 2010 |