| Handcraft Delite Ltd | Wholesale & retail | 2023 |
| Handel Productions Limited | Information & communication | 1998 |
| Handley Heating North West Limited | Construction | 2010 |
| Handmade Gifts by Sally Bruce Ltd | Wholesale & retail | 2024 |
| Handy Hired Limited | Administrative & support | 2002 |
| Hanford Terrace Management Limited | Households | 2021 |
| Hanforge Ltd | Manufacturing | 2026 |
| Hang Seng Ltd | Wholesale & retail | 2019 |
| Hangzhou Huijian Company Limited | Extraterritorial | 2021 |
| Hani Hassan Ltd | Wholesale & retail | 2022 |
| Hanley Groundworks Limited | Construction | 2003 |
| Hanley Motorsport Ltd | Wholesale & retail | 2015 |
| Hanlon Investment Company Limited | Real estate | 2020 |
| Hanlon Property Holdings Ltd | Real estate | 2020 |
| Hannah Gallagher Ltd | Administrative & support | 2019 |
| Hannah Williamson Limited | Manufacturing | 2013 |
| Hannah’S Harmonious Healing Ltd | Health & social care | 2023 |
| Hannan Blinds (Preston) Limited | Manufacturing | 2014 |
| Hannett Hale Recruitment Ltd | Administrative & support | 2024 |
| Hannigan Holding Limited | Financial services | 2025 |
| Hans & S Ltd | Hospitality | 2020 |
| Hans Transport Ltd | Administrative & support | 2024 |
| Hanscorp Consulting Ltd | Professional & scientific | 2019 |
| Hanscorp Holdings Limited | Financial services | 2023 |
| Hanscorp Limited | Wholesale & retail | 2011 |
| Hanscorp Properties Ltd | Real estate | 2024 |
| Hansec Fire Ltd | Construction | 2024 |
| Hansen Groundworks Ltd | Construction | 2024 |
| Hanson Cleaning Equipment Limited | Wholesale & retail | 2003 |
| Hansrod Limited | Professional & scientific | 2012 |
| Hapi Thai Ltd | Hospitality | 2026 |
| HAPI2CARE Ltd | Health & social care | 2026 |
| Happiness Moon Food Enterprise Ltd | Wholesale & retail | 2024 |
| Happy A1 Ltd | Hospitality | 2019 |
| Happy Boxx UK Ltd | Wholesale & retail | 2022 |
| Happy Haddock Ltd | Arts & recreation | 2021 |
| Happy Hamperly Limited | Wholesale & retail | 2025 |
| Happy Happy Moments Limited | Arts & recreation | 2026 |
| Happy Hobby Media Ltd | Information & communication | 2026 |
| Happy Lemon Labs Ltd | Information & communication | 2025 |
| Happy Little Nightingales Ltd | Health & social care | 2016 |
| Happy Pets and Aquatics Limited | Wholesale & retail | 2016 |
| Happy Plants Limited | Administrative & support | 2013 |
| Happy Shopper INT Ltd | Wholesale & retail | 2024 |
| Happy Valley 4U Limited | Hospitality | 2016 |
| Happy Wanderers Camping Club Limited | Arts & recreation | 2024 |
| HAPPY2PAY Limited | Financial services | 2023 |
| Happydepth Limited | Financial services | 1992 |
| Hapy Investments Limited | Financial services | 2020 |
| Harben Property Investment Limited | Construction | 2020 |
| Harbor Greetings Ltd | Wholesale & retail | 2025 |
| Harbour Properties (North West) Limited | Real estate | 2002 |
| Harbridge Consulting Limited | Professional & scientific | 2019 |
| Harcroft Group Limited | Construction | 2025 |
| Harcroft Homes Limited | Construction | 2025 |
| Hard Dock Ltd | Hospitality | 2025 |
| Hard Wired Supplements Ltd | Hospitality | 2020 |
| Harding Technology Limited | Information & communication | 2011 |
| Harfindel (Holdings) Ltd | Information & communication | 2017 |
| Harfindel Technology Ltd | Information & communication | 2017 |
| Hari Krishna Maharaj Limited | Hospitality | 2024 |
| Harle Syke Properties Limited | Real estate | 2025 |
| Harlson Property Group Ltd | Construction | 2022 |
| Harman Number Thirteen | Professional & scientific | 1946 |
| Harmgrey Limited | Information & communication | 2024 |
| Harmony Law Ltd | Professional & scientific | 2026 |
| Harper Accommodation Limited | Real estate | 2018 |
| Harper Industries Limited | Wholesale & retail | 1995 |
| Harris Park (Preston) Limited | Real estate | 2023 |
| Harris Translations Limited | Professional & scientific | 2019 |
| Harris Watkins Limited | Hospitality | 2007 |
| Harrison Cropper Ltd | Wholesale & retail | 2021 |
| Harrison Drury & Co Holdings Limited | Financial services | 2024 |
| Harrison Drury & Co Limited | Professional & scientific | 2009 |
| Harrison Drury LLP | | 2016 |
| Harrison Drury Trust Corporation Limited | Administrative & support | 2026 |
| Harrison Financial Planning Ltd | Professional & scientific | 2018 |
| Harrison FS Limited | Professional & scientific | 2025 |
| Harrison Hunter Trading Ltd. | Wholesale & retail | 2000 |
| Harrison Management Services Limited | Professional & scientific | 2007 |
| Harrison Recoveries Ltd | Other services | 2012 |
| Harrison Weaver Electricals Limited | Construction | 2004 |
| Harrisons Dairies Limited | Wholesale & retail | 1990 |
| Harrisons Refrigerated Trailer Sales Ltd | Transport & logistics | 2020 |
| Harrisonspencer Ltd | Education | 2014 |
| Harrop Hindle Investments Ltd | Real estate | 2025 |
| Harry Larry & Gary Limited | Professional & scientific | 2014 |
| Harry Law Holdings Limited | Financial services | 2008 |
| Harry Singh & Sons Ltd | Hospitality | 2023 |
| Harry Solutions Limited | Information & communication | 2018 |
| Harry UK Holdings Ltd | Real estate | 2024 |
| Harry Walters & Livesey Limited | Professional & scientific | 2007 |
| Harry Wood Livestock Ltd | Agriculture & fishing | 2023 |
| Harshi Bhojani Investment Ltd | Real estate | 2025 |
| Hart Mortgages Limited | Financial services | 2015 |
| Hart Performance Coaching Limited | Education | 2024 |
| Hartes Home Store Ltd | Administrative & support | 2018 |
| Hartley Property Developments Ltd | Real estate | 2023 |
| Hartley Taylor Limited | Professional & scientific | 2000 |
| Hartley's Automotive Limited | Wholesale & retail | 2023 |