| Holmes IT Maintenance Ltd | Information & communication | 2021 |
| Holmshaw Property Co Limited | Real estate | 1955 |
| Holmshaw Property Holdings Limited | Real estate | 2012 |
| Holstrom & Co. Ltd | Financial services | 2022 |
| Holywell Property Ltd | Construction | 2023 |
| Home Addressed Limited | Extraterritorial | 2022 |
| Home and Lifestyle Essentials Limited | Wholesale & retail | 2025 |
| Home Farm (Cheltenham) Caravan Storage Limited | Transport & logistics | 2022 |
| Home Host Ltd | Households | 2021 |
| Home Master Service Ltd | Construction | 2024 |
| Home Sweet Home Estate Agents Lettings & Serviced Accomodation Limited | Real estate | 2020 |
| Homecastle Management Limited | Households | 1989 |
| Homefinders Oxford Limited | Real estate | 1997 |
| Homeford Holdings Ltd | Construction | 2018 |
| Homes With Fortune Ltd | Real estate | 2025 |
| Homespun Dreamer Limited | Wholesale & retail | 2018 |
| Homeward Properties Ltd | Construction | 1999 |
| Honed Business Enterprises Limited | Manufacturing | 2015 |
| Honemaster Holdings Limited | Financial services | 2022 |
| Honest Ocean Material Ltd | Manufacturing | 2021 |
| Honesty Group Limited | Hospitality | 2017 |
| Honey Mustard Limited | Hospitality | 2026 |
| Honeybourne Investments I Limited | Construction | 2024 |
| Honeycott Ventures Limited | Real estate | 2013 |
| Honeycroft Projects Limited | Information & communication | 1999 |
| Honeystone Solutions Ltd | Construction | 2026 |
| Hong Kong Polyu (United Kingdom) Association | Other services | 2010 |
| Hookbank Limited | Construction | 2023 |
| Hooli Studios Ltd | Manufacturing | 2018 |
| Hooton Paddocks Ltd | Construction | 2021 |
| HOP Talent Ltd | Administrative & support | 2023 |
| Hopcroft Developments Ltd | Construction | 2019 |
| Hopcroft Holdings Ltd | Construction | 2023 |
| Hope Care Properties Ltd | Real estate | 2024 |
| Hope Care Service Agency Ltd | Health & social care | 2021 |
| Hopley Morgan Developments Limited | Construction | 2018 |
| Hopping Harvest Limited | Real estate | 2024 |
| Hopson Solicitors Limited | Professional & scientific | 2016 |
| Hopstone Ltd | Education | 2011 |
| Hopton Property Investment Holdings Limited | Extraterritorial | 2021 |
| Horizon Pharmaceuticals Limited | Health & social care | 2011 |
| Horizon Pharmacy Ltd | Administrative & support | 2014 |
| Hornbeam Planning Ltd | Professional & scientific | 2015 |
| Hornbeam Training & Wellbeing Ltd | Education | 2020 |
| Horse Leads Limited | Manufacturing | 2025 |
| Horsechoux Ltd | Manufacturing | 2020 |
| Horseshoe Ecology Ltd | Professional & scientific | 2026 |
| Horsey Levels Renewable Energy Limited | Energy | 2021 |
| Horwood Consultants Ltd | Professional & scientific | 2023 |
| Horwood Tax Consultants Ltd | Professional & scientific | 2019 |
| Hosker Haynes Auctioneers Limited | Wholesale & retail | 2022 |
| Hospitality Cotswold Ltd | Professional & scientific | 2022 |
| Hot and Sweet Ltd | Hospitality | 2018 |
| Hot Consultants Limited | Information & communication | 2015 |
| Hot OFF the Press Gifting Ltd | Manufacturing | 2020 |
| Hotel Essentials Ltd | Wholesale & retail | 2017 |
| Hotel Sales Solutions Limited | Administrative & support | 2012 |
| Hotelli Limited | Wholesale & retail | 2024 |
| Houghton Art Ltd | Arts & recreation | 2010 |
| Hougun Manor Consulting Limited | Professional & scientific | 2022 |
| Houidheg Ltd | Hospitality | 2025 |
| Hounds & Hunters Limited | Agriculture & fishing | 2024 |
| House 2 Home Financial Services Ltd | Financial services | 2018 |
| House Deal Online Ltd | Wholesale & retail | 2021 |
| House Network Limited | Administrative & support | 2025 |
| House of Berkeley Ltd | Wholesale & retail | 2025 |
| House of English Learning Centre Ltd | Education | 2022 |
| House of Harknetts Ltd | Construction | 2025 |
| House of Hozier Ltd | Professional & scientific | 2021 |
| House of S&T Limited | Manufacturing | 2024 |
| House of VI Limited | Information & communication | 2025 |
| House Plan Plus Ltd | Professional & scientific | 2025 |
| Housemart Limited | Professional & scientific | 2002 |
| Houseshare Cheltenham Ltd | Construction | 2019 |
| Housing Finance Specialists (HFS) Ltd | Information & communication | 2022 |
| Houston Construction Limited | Manufacturing | 2020 |
| Hovsco UK Ltd | Wholesale & retail | 2022 |
| HOW to Play Bass DOT COM Ltd | Professional & scientific | 2011 |
| Howatt Consulting Limited | Real estate | 2022 |
| Howdon Power Transmission Limited | Professional & scientific | 1977 |
| Howe Pratap Lettings Ltd | Real estate | 2022 |
| Howe-Pratap Properties Ltd | Financial services | 2017 |
| Howell Electrical Contractors Limited | Construction | 2018 |
| Howlers Presents Ltd | Administrative & support | 2026 |
| Howlett Media Productions Limited | Information & communication | 1995 |
| HP Professional Services LLP | | 2010 |
| HP Property Holdings Ltd | Real estate | 2016 |
| HR People Support Ltd | Administrative & support | 2019 |
| HR Star Consulting Ltd | Professional & scientific | 2015 |
| HRH Consulting Limited | Professional & scientific | 1997 |
| Hrhubb Limited | Administrative & support | 2016 |
| HRJ Enterprise Limited | Wholesale & retail | 2022 |
| HRP Recruitment Services Ltd | Construction | 2003 |
| HSA Bottling Services Limited | Administrative & support | 2022 |
| HSC Auto Centre Cheltenham Limited | Wholesale & retail | 2017 |
| HSI Research Ltd | Administrative & support | 2019 |
| HSK Legal Limited | Financial services | 2024 |
| Htas Air Conditioning Ltd | Construction | 2023 |
| Huayu (UK) Trading Co., Ltd | Wholesale & retail | 2019 |
| Hub Health Ltd | Health & social care | 2022 |