| Harrison Rose Estate Agents Ltd | Real estate | 2011 |
| Harrison Springfield Properties Limited | Construction | 2023 |
| Harrogate Residents Company Limited | Households | 2007 |
| Harry and Toto Limited | Information & communication | 2006 |
| Harry Horrell Limited | Agriculture & fishing | 1997 |
| Harry N Nobbs Limited | Real estate | 1950 |
| Harry's New Homes Ltd | Construction | 2023 |
| Harrys Auto Sales Limited | Wholesale & retail | 2025 |
| Harry’S Car Sales Ltd | Wholesale & retail | 2021 |
| Harston Convenience Store Ltd | Wholesale & retail | 2013 |
| Hart Petroleum Consulting Ltd. | Professional & scientific | 2016 |
| Hart-Kent Limited | Hospitality | 2019 |
| Hartland Recruitment & Advertising Limited | Administrative & support | 1995 |
| Hartzenberg Investments Limited | Real estate | 2009 |
| Harvest Bakery Ltd | Manufacturing | 2014 |
| Harvest Barn Cafe Ltd | Hospitality | 2024 |
| Harvest Life Care Limited | Health & social care | 2017 |
| Harvest Life Church | Other services | 2008 |
| Harvest Moon Estates Ltd | Construction | 2019 |
| Harvey Winning & Co (Accountants) Ltd | Professional & scientific | 2006 |
| Harwood Property SPV1 Ltd | Real estate | 2023 |
| Hasaan Ltd | Real estate | 2018 |
| Hasany Properties Ltd | Real estate | 2024 |
| Haseeb Motors Peterborough Ltd | Wholesale & retail | 2020 |
| Hasem Limited | Health & social care | 2008 |
| Haskoning UK Holdings Limited | Professional & scientific | 1994 |
| Haskoning UK Limited | Professional & scientific | 1977 |
| Hasmo Digital Ltd | Professional & scientific | 2021 |
| Hass Express Limited | Wholesale & retail | 2026 |
| Hassan Eastern Fashions Ltd | Wholesale & retail | 2011 |
| Hassan Food Stores (Cambs) Ltd | Wholesale & retail | 2025 |
| Hassan Grill Peterborough Ltd | Hospitality | 2025 |
| Hassans Investment Group Ltd | Real estate | 2025 |
| Hassett Paving Ltd | Construction | 2018 |
| Hassys Autos Ltd | Wholesale & retail | 2026 |
| Hathphool Ltd | Wholesale & retail | 2025 |
| Hats Patches Ltd | Wholesale & retail | 2025 |
| Hattriq Ltd | Professional & scientific | 2025 |
| Haures Limited | Transport & logistics | 2019 |
| Havana Global College Ltd | Public administration | 2021 |
| Haven Heights Holdings Ltd | Real estate | 2024 |
| Haven Lettings (Peterborough) Ltd | Real estate | 2019 |
| Havenhunt Ltd | Wholesale & retail | 2024 |
| Havenstride Inc Ltd | Information & communication | 2026 |
| Haverfords Limited | Financial services | 2013 |
| Haverfordwest Bryn Residents Company Limited | Households | 2000 |
| Haverhill Tyre Centre Ltd | Wholesale & retail | 2025 |
| Haveswater Developments Ltd | Real estate | 2020 |
| Hawk Building Services (Lincs) Ltd | Construction | 2017 |
| Hawk Watch Ltd | Wholesale & retail | 2025 |
| Hawkeswood Lifting Limited | Manufacturing | 2020 |
| Hawksbill Property Ltd | Hospitality | 2019 |
| Hawksmead Estate Commercial Management Company Limited | Households | 2008 |
| Hawksmead Limited | Extraterritorial | 2002 |
| Hawley Group Investments Limited | Financial services | 2026 |
| Hawre Cuts Ltd | Other services | 2023 |
| Hawthorn Global Investments Limited | Real estate | 2018 |
| Hawthorn Global Ltd | Information & communication | 2016 |
| Hawthorn Management (Anglia) Ltd | Financial services | 2014 |
| Hawthorne Gardens Management Company Limited | Households | 2018 |
| Hayat E-Commerce Ltd | Wholesale & retail | 2019 |
| Hayatou Management Ltd | Information & communication | 2024 |
| Haybarn Close Management Company Limited | Households | 2015 |
| Haybirry Haulage Ltd | Transport & logistics | 2017 |
| Haycock Kitchen Ltd | Hospitality | 2019 |
| Hayden Roofing Contractors Limited | Construction | 2016 |
| Hayder Medical Services Ltd | Health & social care | 2016 |
| Hayes Optical Ltd | Health & social care | 2011 |
| Hayes View (Cotgrave) Residents Management Company Limited | Households | 2026 |
| Hayle Carpentry Limited | Construction | 2021 |
| Haylo Medical Ltd | Health & social care | 2021 |
| Haynes & Johnson Ltd | Construction | 2017 |
| Haynes Media & Marketing Ltd | Professional & scientific | 2021 |
| Haywood Coatings Limited | Construction | 2015 |
| Hazell Flooring Ltd. | Construction | 2014 |
| Hazypix Studios Ltd | Information & communication | 2025 |
| HB Groundworks & Construction Limited | Construction | 2024 |
| HB Partners Assets Limited | Real estate | 2023 |
| HBD Wealth Management Limited | Professional & scientific | 2024 |
| Hbel Properties Ltd | Real estate | 2025 |
| HBS Accessories Ltd | Wholesale & retail | 2025 |
| Hbvb | Financial services | 2013 |
| Hbvb Management Limited | Professional & scientific | 2013 |
| HC Barbers Ltd | Other services | 2023 |
| HC Group Limited | Professional & scientific | 2001 |
| HC Peterborough Ltd | Other services | 2019 |
| HCH Mortgages Ltd | Financial services | 2026 |
| HCJ Properties Ltd | Real estate | 2019 |
| HCO Capital Limited | Real estate | 2019 |
| HCS Cars Ltd | Wholesale & retail | 2026 |
| HCS Pboro Ltd | Wholesale & retail | 2021 |
| HCW (Hunts) Ltd | Administrative & support | 2016 |
| HD Deliveries Ltd | Transport & logistics | 2016 |
| HD Fastenings Ltd | Wholesale & retail | 2024 |
| HD Glowpath Limited | Wholesale & retail | 2025 |
| HD Hair & Co Ltd | Other services | 2020 |
| HD Homes and Estates Ltd | Real estate | 2025 |
| HD Teamwear Ltd | Wholesale & retail | 2014 |
| HDM Services Ltd | Health & social care | 2025 |
| HDM Tyres Ltd | Wholesale & retail | 2023 |