| Hardwick's Canine Grooming Limited | Wholesale & retail | 2023 |
| Hardy & Sons Property Development Ltd | Construction | 2024 |
| Hardy Street Apartments Management Company Limited | Real estate | 2015 |
| Hardyl Consultancy Ltd | Professional & scientific | 2020 |
| Harehill Crescent Ltd | Financial services | 2011 |
| Harehope Limited | Wholesale & retail | 2024 |
| Harehope Wholefoods Limited | Wholesale & retail | 2024 |
| Haresfield House Property Investment Limited | Real estate | 2017 |
| Haresh Sood Law Chambers Limited | Professional & scientific | 2023 |
| Haresh Sood Properties (HSP) Ltd | Real estate | 2021 |
| Hargan UK Limited | Construction | 2016 |
| Hargreaves Family 2018 Ltd | Real estate | 2018 |
| Hari News (Nottingham) Ltd | Wholesale & retail | 2021 |
| Harish Residential Ltd | Real estate | 2020 |
| HARK1 Property Ltd | Real estate | 2026 |
| Harker (Holdings) Ltd | Extraterritorial | 2020 |
| Harker Automotive Limited | Wholesale & retail | 2023 |
| Harker Properties (Nottingham) Ltd | Real estate | 2017 |
| Harker Soar Ltd | Real estate | 2018 |
| Harkrishan Dubb Ltd | Manufacturing | 2014 |
| Harland Homes Ltd | Real estate | 2019 |
| Harlaxton Management Company Limited | Real estate | 2012 |
| Harlequin PVT Ltd | Public administration | 2018 |
| Harley & Willmott Property Services Limited | Real estate | 2014 |
| Harlow Housing Ltd | Real estate | 2018 |
| Harlow V.E. Limited | Other services | 1999 |
| Harm Solution Ltd | Wholesale & retail | 2019 |
| Harman Building Services Ltd | Construction | 2003 |
| Harman Electrical Services Ltd | Construction | 2026 |
| Harmless CIC | Health & social care | 2010 |
| Harmony Care Consortium Ltd | Health & social care | 2024 |
| Harmony Financial Services Ltd | Financial services | 2016 |
| Harmony Future Ltd | Manufacturing | 2023 |
| Harmony Haven Estates Ltd | Real estate | 2025 |
| Harmony Home Holdings Ltd. | Construction | 2018 |
| Harmony House Trading Ltd | Financial services | 2021 |
| Harmony Lets Ltd | Real estate | 2020 |
| Harmony Prime Care Ltd | Health & social care | 2025 |
| Harmony Stays Ltd | Households | 2021 |
| Harmony UK Holdings Limited | Financial services | 2017 |
| Harmony UK Intermediate Holdings Limited | Financial services | 2017 |
| Harnettel Limited | Real estate | 2001 |
| Haroon Fast Foodies Ltd | Wholesale & retail | 2025 |
| Haroon Hallal Limited | Wholesale & retail | 2023 |
| Haroon Providers Limited | Wholesale & retail | 2026 |
| Harper Alliance Limited | Wholesale & retail | 2015 |
| Harper and Co. Estates Limited | Real estate | 2021 |
| Harper Ascott International Limited | Wholesale & retail | 2020 |
| Harper Estate Limited | Real estate | 2025 |
| Harper International Ltd | Financial services | 2022 |
| Harper Living Limited | Extraterritorial | 2020 |
| Harper Property Management Ltd | Real estate | 2014 |
| Harper Recruitment Limited | Administrative & support | 2006 |
| Harpham Financial Limited | Professional & scientific | 2018 |
| Harpin's Funeral Service Limited | Extraterritorial | 1919 |
| Harren Hospitality Ltd | Real estate | 2021 |
| Harren Investment Limited | Real estate | 2017 |
| Harren Lettings Ltd | Real estate | 2026 |
| Harren Limited | Construction | 2015 |
| Harren Property Limited | Real estate | 2016 |
| Harrenhall Investments Limited | Real estate | 2025 |
| Harriet Bond Limited | Administrative & support | 2012 |
| Harrington & Vale Living Ltd | Real estate | 2026 |
| Harrington Academic Services Limited | Professional & scientific | 2026 |
| Harrington Jones (Nottingham) Limited | Real estate | 2015 |
| Harris Aluminium Installations Limited | Construction | 2014 |
| Harris Engineering & Design Ltd | Professional & scientific | 2025 |
| Harris Grant Properties CIC | Real estate | 2022 |
| Harris Surgical Limited | Health & social care | 2012 |
| Harris Sutton Joinery Limited | Construction | 2020 |
| Harrison & Griffiths Ltd | Manufacturing | 2016 |
| Harrison & Sydney Limited | Real estate | 2026 |
| Harrison Bailey Design Ltd | Professional & scientific | 2012 |
| Harrison Groundworks Sales & Plant Hire Ltd | Construction | 2025 |
| Harrison Mcafee Ltd | Real estate | 2011 |
| Harrison Recycling Limited | Water & waste | 2023 |
| Harrison Scrap Metals Limited | Wholesale & retail | 2023 |
| Harrison Skip Hire Limited | Water & waste | 2023 |
| Harrisona Engineering Limited | Professional & scientific | 2023 |
| Harrisons Accounting Services Limited | Professional & scientific | 2002 |
| Harrison’S Electrical Projects (HEP) Ltd | Construction | 2026 |
| Harriteq Ltd | Information & communication | 2025 |
| Harrlangs Properties Limited | Real estate | 2018 |
| Harrogate GI LLP | | 2024 |
| Harrogate Road (Bradford) Management Company Limited | Real estate | 2020 |
| Harrogate Steel Trading Ltd | Wholesale & retail | 2017 |
| Harron Financial Limited | Financial services | 2014 |
| Harrow Asset Limited | Real estate | 2021 |
| Harrow Street Management Limited | Households | 2004 |
| Harrowden Court Management Company Limited | Real estate | 2008 |
| Harrowgate Ltd | Wholesale & retail | 2025 |
| Harrrisa Ltd | Manufacturing | 2022 |
| Harry Richmond and Partner Limited | Construction | 1954 |
| Harry William Homes Ltd | Real estate | 2020 |
| Harry's Home Improvements Ltd | Construction | 2023 |
| Harrymia Ltd | Other services | 2023 |
| Harsha the Hygienist Limited | Health & social care | 2022 |
| Hart Homes and Developments Ltd | Construction | 2022 |
| Hart of the Home Ltd | Professional & scientific | 2020 |
| Hartan Limited | Administrative & support | 2000 |