| Hospitality Reservations Ltd | Wholesale & retail | 2020 |
| Host Your Property Limited | Households | 2020 |
| Hosting YOU Ltd | Real estate | 2026 |
| Hot Box Bites Ltd | Hospitality | 2026 |
| Hot Flue Ltd | Administrative & support | 2018 |
| Hot Tomato Limited | Wholesale & retail | 2007 |
| Hotelpress Limited | Construction | 2000 |
| Hotels With a View Limited | Hospitality | 2007 |
| House of 10 Ltd | Administrative & support | 2018 |
| House of Abigail Ltd | Professional & scientific | 2023 |
| House of Hades Ltd | Manufacturing | 2024 |
| House of Imagination | Education | 2007 |
| House of Radiators Ltd | Wholesale & retail | 2011 |
| Housely Limited | Real estate | 2023 |
| Housetype Ltd | Professional & scientific | 2020 |
| Housley Clothing Ltd | Manufacturing | 2019 |
| Houston House Ltd | Professional & scientific | 2024 |
| Houston Mckean Ltd | Professional & scientific | 2018 |
| Howard Allson Limited | Information & communication | 2015 |
| Howarth Family Holdings Ltd | Real estate | 2020 |
| Howarth Family Partnership LLP | | 2020 |
| Hoyle IP Services Ltd | Professional & scientific | 2017 |
| HP Independent Traders Ltd | Other services | 2009 |
| Hplaspepera Ltd | Hospitality | 2026 |
| Hpmeyler Ltd | Professional & scientific | 2012 |
| Hrdwck Ltd | Other services | 2025 |
| HS Roofing & Construction Ltd | Construction | 2021 |
| HSD Store Limited | Wholesale & retail | 2026 |
| HTD Wilkins Limited | Mining & quarrying | 2020 |
| HTI Holdings BC Company Limited | Professional & scientific | 2024 |
| HTV Media Group Limited | Financial services | 2020 |
| Hubble Pathology Services Limited | Health & social care | 2022 |
| Huber Dixon Insurance Services Ltd | Financial services | 2006 |
| Huddle Architecture Ltd | Professional & scientific | 2016 |
| Hudson & Co Unique Developments Ltd | Construction | 2018 |
| Hudson Bars Limited | Hospitality | 2002 |
| Hudson Heavy Industries Limited | Information & communication | 2019 |
| HUE & Holasz Limited | Wholesale & retail | 2025 |
| HUE Salon Limited | Other services | 2017 |
| HUG Events Ltd | Administrative & support | 2016 |
| Hugh Milner Consulting Limited | Professional & scientific | 2017 |
| Hughes Family Property Ltd | Real estate | 2018 |
| Hughes Trading Co (Bath) Limited | Financial services | 2016 |
| Humanity Centred Designs Ltd | Manufacturing | 2022 |
| Humanity India Fashion Limited | Wholesale & retail | 2024 |
| Humanity York Ltd | Wholesale & retail | 2025 |
| Hummingbird HR Services Ltd | Professional & scientific | 2023 |
| Humphrey Hare Ltd | Manufacturing | 2026 |
| Humphries Consultancy Services Limited | Professional & scientific | 2013 |
| Humphris Ovens Ltd | Professional & scientific | 2025 |
| Hungarian School of Bristol C.I.C. | Hospitality | 2020 |
| Hunt and Grow Ltd | Real estate | 2023 |
| Hunter French Limited | Real estate | 2004 |
| Hunter LYE Limited | Real estate | 2007 |
| Huntingtons Stapleton Management Company Limited | Households | 2025 |
| Hupak Sports (UK) Limited | Wholesale & retail | 2025 |
| Hurst Associates (Bath) Limited | Professional & scientific | 2007 |
| Hussain Zest Co Ltd | Wholesale & retail | 2025 |
| Hussey Seatway Limited | Manufacturing | 2001 |
| Huston Consultants Ltd | Health & social care | 2020 |
| Huxon Limited | Professional & scientific | 2020 |
| HVM UK Ltd | Professional & scientific | 2019 |
| HVN Labs Ltd | Manufacturing | 2024 |
| Hybrid Health Ltd | Health & social care | 2025 |
| Hybrid Nutrition Ltd | Arts & recreation | 2021 |
| Hydoo Limited | Manufacturing | 2022 |
| Hydramind Limited | Information & communication | 2019 |
| Hydro-Morph Ltd | Professional & scientific | 2017 |
| Hydrocarbon Ventures Limited | Extraterritorial | 2024 |
| Hydrocoast Consulting Engineers Ltd | Professional & scientific | 2023 |
| Hydrorock Group UK & Ireland Ltd | Wholesale & retail | 2023 |
| Hygienic Design & Cladding Ltd | Construction | 2025 |
| Hyou Holdings Ltd | Real estate | 2026 |
| I Labs Consulting Ltd | Professional & scientific | 2025 |
| I Squared R Consulting Ltd | Professional & scientific | 2025 |
| I'M Grace Ltd | Professional & scientific | 2020 |
| I-Works Research Limited | Professional & scientific | 2007 |
| I.B.H. Associates Limited | Construction | 1998 |
| I.C.A & Telemetry Services Limited | Water & waste | 1997 |
| I.J.B.H. Limited | Professional & scientific | 2008 |
| I.Q.Arch Ltd | Administrative & support | 2014 |
| I42R Limited | Information & communication | 2018 |
| Iaaps Limited | Professional & scientific | 1994 |
| IAB Construction Services Limited | Construction | 2020 |
| IAN Gray & Associates Limited | Financial services | 2004 |
| IAN Wilkins (Bath) Limited | Construction | 2013 |
| IBN Asset Management Ltd | Real estate | 2025 |
| Icarus Jewellery Ltd | Wholesale & retail | 2019 |
| Icarus Photography Limited | Professional & scientific | 2011 |
| Ice House Design Limited | Arts & recreation | 2004 |
| Icof Europe Ltd | Administrative & support | 2007 |
| ICT World Policy Ltd | Information & communication | 2021 |
| Icurious Limited | Real estate | 2014 |
| ID Consulting Services Ltd | Real estate | 2016 |
| IDB Innovations Ltd | Professional & scientific | 2017 |
| Ideal Tradeco Ltd | Hospitality | 2017 |
| Idealclaim Residents Management Limited | Households | 1987 |
| IDF Design Limited | Professional & scientific | 2018 |
| IDM Airless Ltd | Construction | 2025 |
| Idpe (Trading) Ltd | Education | 2017 |