| Hingley Training Services Limited | Transport & logistics | 2009 |
| Hire Financials Limited | Professional & scientific | 2011 |
| HJE Property Ltd | Real estate | 2024 |
| HMC Cars Ltd | Extraterritorial | 1972 |
| HMX Corporate Communication Limited | Information & communication | 2005 |
| Hobbs Carpet Sales Limited | Wholesale & retail | 1975 |
| Hobro Holdings Limited | Real estate | 2026 |
| Hobsons Brewery and Company Limited | Manufacturing | 1997 |
| Hogar Construction Limited | Construction | 2022 |
| Hogarths Stone Manor Limited | Hospitality | 2015 |
| Holbett Gray Limited | Financial services | 2023 |
| Holeshot Holidays Ltd | Administrative & support | 2019 |
| Hollowspring Ltd | Transport & logistics | 2020 |
| Hollybank Residential Care Home Ltd | Health & social care | 2021 |
| Hollywood Blinds Limited | Manufacturing | 2011 |
| Hollywood Pizza & Burger House Ltd | Hospitality | 2025 |
| Hollywood Pizza House Ltd | Hospitality | 2022 |
| Holmdale Print Limited | Administrative & support | 2005 |
| Holmer Property Ltd | Real estate | 2026 |
| Holmes Capital Holdings Ltd | Extraterritorial | 2025 |
| Holsar IT Ltd | Information & communication | 2019 |
| Holtby Holdings Limited | Financial services | 2023 |
| Holte Ender Holdings Ltd | Financial services | 2024 |
| Holtom and Sons Ltd | Construction | 2024 |
| Holy Trinity Kennels Limited | Agriculture & fishing | 2026 |
| Holy Trinity School Academy Trust | Education | 2012 |
| Home and Garden Improvements (Shropshire) Limited | Professional & scientific | 2000 |
| Home of Blossoms Ltd | Education | 2025 |
| Home-Start Wyre Forest | Health & social care | 2005 |
| Homeforts Care Limited | Administrative & support | 2022 |
| Homer Phoenix Ltd | Financial services | 2026 |
| Homesphere Developments Ltd | Construction | 2019 |
| Homington Ltd | Transport & logistics | 2021 |
| Honaix Ltd | Administrative & support | 2024 |
| Honeysuckle Aesthetics Ltd | Other services | 2020 |
| Honfolkix Ltd | Administrative & support | 2024 |
| Honnington Ltd | Transport & logistics | 2021 |
| Hoodi Ltd | Wholesale & retail | 2023 |
| Hopton Oak Ltd | Manufacturing | 2024 |
| Hora E Sempre Ltd | Information & communication | 2024 |
| Horen Plastics UK Ltd | Wholesale & retail | 2022 |
| Horfiwik Ltd | Health & social care | 2020 |
| Horizon Community Education Ltd | Administrative & support | 2025 |
| Horizons Kitchens and Bathrooms Limited | Construction | 2018 |
| Horizons Security Limited | Administrative & support | 2012 |
| HORIZONS432 Limited | Construction | 2026 |
| Horizonwheels Ltd | Transport & logistics | 2019 |
| Horse & Jockey Management Company Limited | Administrative & support | 2014 |
| Hotsteedspub Ltd | Transport & logistics | 2019 |
| Houseman Chemical Cleaning Limited | Administrative & support | 2022 |
| Houseman Watermarc Limited | Administrative & support | 2005 |
| Hpms Commercials Limited | Wholesale & retail | 2026 |
| HS86CONSULTING Limited | Public administration | 2016 |
| Hside Investments Ltd | Professional & scientific | 2022 |
| Hspc Enterprises Ltd | Wholesale & retail | 2024 |
| HTC Consulting Limited | Administrative & support | 2016 |
| Huchuu Ltd | Wholesale & retail | 2019 |
| Hudson Rigging Services Ltd | Construction | 2022 |
| Hugestarkets Ltd | Wholesale & retail | 2019 |
| Huilrest Ltd | Wholesale & retail | 2021 |
| Hulse Design & Construction Ltd | Construction | 2020 |
| Human Everything Ltd | Wholesale & retail | 2019 |
| Humanitychoice Ltd | Wholesale & retail | 2019 |
| Hunky Dory George House Ltd | Real estate | 2024 |
| Huntcouple Ltd | Transport & logistics | 2019 |
| Hunter Profiles Ltd | Professional & scientific | 2006 |
| Hunts Rise Management Company Limited | Households | 2010 |
| Huraza Ltd | Administrative & support | 2018 |
| Hurcott Design Ltd | Professional & scientific | 2017 |
| Hurcott Village (Management) Limited | Administrative & support | 1981 |
| Hurg Ltd | Transport & logistics | 2020 |
| Hybridstudio Consulting Ltd | Information & communication | 2025 |
| Hyde Hives Ltd | Manufacturing | 2018 |
| Hydro-Tech Environmental Services Limited | Professional & scientific | 2003 |
| I - BDM Limited | Administrative & support | 2011 |
| I B P Corporate Finanace Limited | Professional & scientific | 2026 |
| I B P Group Limited | Professional & scientific | 2026 |
| I DU Duct Ltd | Administrative & support | 2001 |
| I-K-3 Associates Ltd | Information & communication | 2024 |
| I.K.S.W. Ltd. | Health & social care | 2015 |
| I.M.M. Hydraulics (U.K.) Limited | Manufacturing | 1994 |
| I4MEDIA Ltd | Information & communication | 2000 |
| IA Oshea Ltd | Hospitality | 2022 |
| Iacco Assets Ltd | Real estate | 2024 |
| Iammezou Ltd | Transport & logistics | 2019 |
| IAP Fire Compliance Ltd | Public administration | 2025 |
| Iastermic Ltd | Administrative & support | 2024 |
| Iboba Ltd | Hospitality | 2023 |
| Ice Cold Systems Limited | Manufacturing | 2014 |
| Ice Tea Desserts Ltd. | Hospitality | 2019 |
| Iceblue Digital Limited | Professional & scientific | 2010 |
| Iceblue Holdings Limited | Financial services | 2019 |
| Iceblue Limited | Administrative & support | 1997 |
| Iceblue Marketing and Design Limited | Administrative & support | 2025 |
| Icebraid Ltd | Transport & logistics | 2020 |
| Icenbend Ltd | Administrative & support | 2024 |
| Iconsult Limited Partnership | | 2016 |
| Idea Rigging Ltd | Information & communication | 2023 |
| Ideal Integrated Services Ltd | Administrative & support | 2025 |
| Iefirsh Ltd | Wholesale & retail | 2021 |