| Houseman and Sellars Property Services Ltd | Construction | 2018 |
| Housing Teacher Ltd | Construction | 2026 |
| Houston Energy Ltd | Professional & scientific | 2024 |
| Hovingham Bakery Ltd | Hospitality | 2022 |
| HOW? Financial Review (Stockport) Limited | Administrative & support | 2010 |
| HOW? Wills & Estate Planning Ltd | Administrative & support | 2017 |
| Howard and Byrne Limited | Education | 2012 |
| Howard Street 1964 Limited | Extraterritorial | 2014 |
| Howardian Developments Limited | Construction | 2015 |
| Howardian Hills Brewing Company Limited | Manufacturing | 2018 |
| Howardian Homes Ltd | Construction | 2026 |
| Howardian Properties Ltd | Real estate | 2025 |
| Howards Events Ltd | Hospitality | 2024 |
| Howcroft Communications Limited | Information & communication | 2017 |
| Howden Coffee Ltd | Wholesale & retail | 2021 |
| Howells VS Group Limited | Other services | 2026 |
| Howie Farming Limited | Agriculture & fishing | 2003 |
| Howling PIG Ltd | Hospitality | 2025 |
| Howsham Power Co Ltd | Energy | 2009 |
| Hoxne Cottages Limited | Hospitality | 2017 |
| Hoxne Developments Limited | Construction | 2024 |
| Hoxne Park Limited | Hospitality | 2014 |
| HP Plumbing and Heating Limited | Construction | 2015 |
| HPC Old York Investments LLP | | 2023 |
| HPC Old York Limited | Real estate | 2023 |
| HPH Accountants LLP | | 2012 |
| HPH Probate Services Limited | Professional & scientific | 2015 |
| HPL Services Limited | Extraterritorial | 2008 |
| Hpqintellect Limited | Professional & scientific | 2017 |
| HPY Futures Limited | Real estate | 2025 |
| HQ Hudson Quarter Estate Limited | Households | 2019 |
| HQ Kings Residential Limited | Households | 2019 |
| HQ Victoria Residential Limited | Households | 2019 |
| HQ Waverley Residential Limited | Households | 2019 |
| Hqbs Renewables Ltd | Manufacturing | 2019 |
| HQN Limited | Professional & scientific | 1995 |
| HR Property York Limited | Real estate | 2026 |
| HRH Cleaning Services Ltd | Administrative & support | 2020 |
| Hrlbk Group Limited | Manufacturing | 2018 |
| HS Acomb Ltd | Hospitality | 2018 |
| HS Altun Ltd | Other services | 2026 |
| HSE Consultants Ltd | Construction | 2022 |
| HSE Learning (UK) Ltd | Administrative & support | 2015 |
| Hseinvestments Limited | Financial services | 2010 |
| Hsml Limited | Real estate | 2020 |
| HTE Corp LLP | | 2021 |
| HTK Meal Ltd | Hospitality | 2025 |
| Htkm Limited | Information & communication | 2022 |
| HTL Investments Limited | Agriculture & fishing | 2022 |
| Hublsoft Group Limited | Information & communication | 2019 |
| Hublsoft Limited | Information & communication | 2019 |
| Hubylee Limited | Construction | 2020 |
| Huckleberry Consulting & Management Ltd | Real estate | 2013 |
| Huckleberry Investments Limited | Real estate | 2022 |
| Huckleberry Land & Woodland Ltd | Agriculture & fishing | 2025 |
| Hudgesoft Ltd | Information & communication | 2024 |
| Hudson Construction Services Limited | Extraterritorial | 2009 |
| Hudson Cook Limited | Real estate | 2025 |
| Hudson Inclusive Futures Ltd | Administrative & support | 2025 |
| Hudson Plant & Excavations Ltd | Construction | 2017 |
| Hudson Properties York Limited | Real estate | 2011 |
| Hudson Suites Ltd | Real estate | 2020 |
| Hudsons of York Limited | Real estate | 2015 |
| Huffy Groundworks & Construction Limited | Construction | 2010 |
| Hughes Removals Ltd | Transport & logistics | 2002 |
| Hugofilms Ltd | Information & communication | 2014 |
| Huitson House Limited | Professional & scientific | 2024 |
| Hull Auto Spares Ltd | Wholesale & retail | 2023 |
| Hull Corn and Feed Trade Association Ltd | Other services | 1896 |
| Hull News & Pictures Ltd | Information & communication | 2002 |
| Hull R.U.F.C. Limited | Real estate | 2021 |
| Hull Road Chinese Ltd | Hospitality | 2025 |
| Hull TAP Ltd | Hospitality | 2023 |
| Hulme Continuity Limited | Professional & scientific | 2015 |
| Huma Retails Ltd | Wholesale & retail | 2023 |
| Human Plus Labs Ltd | Information & communication | 2025 |
| Human Threads HR Ltd | Administrative & support | 2026 |
| Humanic Limited | Professional & scientific | 2024 |
| Humans NOT Robots Ltd | Information & communication | 2020 |
| Humaynee Limited | Hospitality | 2019 |
| Humber Forest School Limited | Education | 2008 |
| Humber Triathletes and Events Ltd | Arts & recreation | 2016 |
| Humbermed Limited | Health & social care | 2011 |
| Humberton Group Limited | Wholesale & retail | 2015 |
| Humberton One Limited | Extraterritorial | 2015 |
| Humberton Two Limited | Extraterritorial | 2015 |
| Humble House Limited | Real estate | 2023 |
| Humble Nomad Automotive Limited | Manufacturing | 2024 |
| Humble Plumbing and Heating Ltd | Construction | 2018 |
| Humerus Prints Ltd | Wholesale & retail | 2020 |
| Huntcatchkill Pest Control Solutions Ltd | Administrative & support | 2011 |
| Hunter Electrical Projects and Services Limited | Construction | 2001 |
| Hunter GEE Holroyd Audit Limited | Professional & scientific | 2025 |
| Hunter GEE Holroyd Holdings Ltd | Professional & scientific | 2024 |
| Hunter GEE Holroyd Limited | Professional & scientific | 1988 |
| Hunter House Management Company Limited | Real estate | 2015 |
| Hunter Mason Consulting Limited | Administrative & support | 2019 |
| Hunter Mcintosh Associates Limited | Professional & scientific | 2016 |
| Hunters Croft (York) Management Company Limited | Households | 2000 |
| Hunters Edge (Eaglescliffe) Residents Management Company Limited | Households | 2022 |