| Horizon Scaffolding & Access Services Limited | Construction | 2005 |
| Horizon Slope Building Limited | Construction | 2021 |
| Horizon Tours Ltd | Administrative & support | 2024 |
| Hormones to Health Limited | Education | 2023 |
| Hornbill Studio Limited | Administrative & support | 2003 |
| Hornby Home Improvements Limited | Construction | 2003 |
| Hornby Stores Ltd | Wholesale & retail | 2025 |
| Horne Partnership Limited | Construction | 2016 |
| Horrocks Meetings Limited | Real estate | 2020 |
| Horse Drawn Carriages (North West) Limited | Other services | 2016 |
| Horsfield Estimating Services Limited | Professional & scientific | 2004 |
| Horsfield Holdings Ltd | Financial services | 2025 |
| Horula Ltd | Professional & scientific | 2018 |
| Horusorin Ltd | Transport & logistics | 2019 |
| Hosmane Private Limited | Real estate | 2022 |
| Hospitality Insights & Solutions Ltd | Administrative & support | 2020 |
| Hospitality NOW Ltd | Other services | 2025 |
| Hot Pickle Catering Ltd | Hospitality | 2022 |
| Hot Studios Ltd | Other services | 2019 |
| Hotena Limited | Wholesale & retail | 2007 |
| Houghton Property Ltd | Real estate | 2023 |
| Houghton Resources Ltd | Professional & scientific | 2010 |
| Houghton Solutions Limited | Information & communication | 2015 |
| Hous & Home (UK) Limited | Real estate | 2022 |
| House of Advertising Limited | Other services | 2014 |
| House of Fhame Limited | Professional & scientific | 2022 |
| House of Finn Ltd | Wholesale & retail | 1999 |
| House of Hair & Beauty (Preston) Ltd | Other services | 2011 |
| House of Leatherby Ltd | Professional & scientific | 2025 |
| House of Soul Studio Ltd | Other services | 2026 |
| House Renovations (Lancashire) Limited | Construction | 2017 |
| HOUSE2HOME Preston Ltd | Real estate | 2025 |
| Housesafe Limited | Manufacturing | 2002 |
| Housesourcery Ltd | Real estate | 2019 |
| Housing Compliance Resourcing Limited | Professional & scientific | 2019 |
| Howard & Howard Limited | Financial services | 2026 |
| Howard & Smith Limited | Financial services | 2015 |
| Howard Longton Limited | Hospitality | 2011 |
| Howard Sutcliff & SON Ltd | Construction | 2010 |
| Howards Neighbourhood Bar Limited | Hospitality | 2019 |
| Howarth NW Properties Limited | Wholesale & retail | 2020 |
| Howefab Ltd | Manufacturing | 2001 |
| Howells PVT Ltd | Information & communication | 2025 |
| Howick Automation Limited | Administrative & support | 2013 |
| Howick Forge Limited | Professional & scientific | 2010 |
| Howlett Marsden Properties Ltd | Real estate | 2024 |
| Howson Motorsport Limited | Education | 2001 |
| HP Bookkeeping & Accounting Limited | Professional & scientific | 2018 |
| HP Digital Limited | Wholesale & retail | 2026 |
| HP Express Ltd | Transport & logistics | 2018 |
| HP Technologies Limited | Wholesale & retail | 2021 |
| HP Titan Ltd | Manufacturing | 2014 |
| HPH (Distribution Services) Limited | Transport & logistics | 1999 |
| HPH Group Ltd | Transport & logistics | 2009 |
| HPH Milton Keynes Limited | Transport & logistics | 2019 |
| HPH Transport Holdings Limited | Transport & logistics | 2017 |
| HQ Bathrooms and Tiles Ltd | Wholesale & retail | 2021 |
| HQ Home Interiors Ltd | Wholesale & retail | 2019 |
| HQ Sofas Limited | Other services | 2018 |
| HQD Preston Ltd | Construction | 2014 |
| HR Boxing Ltd | Wholesale & retail | 2025 |
| HR Complete Manager Limited | Information & communication | 2025 |
| HR MOT Centre Ltd | Wholesale & retail | 2025 |
| HR Steelwork Limited | Manufacturing | 2020 |
| Hres Radiology Limited | Health & social care | 2026 |
| HRI Groundworks Limited | Construction | 2023 |
| HRM Investments Ltd | Construction | 2026 |
| HRS Royale Limited | Wholesale & retail | 2026 |
| HS + GM Dransfield + Sons | | 1997 |
| HS Consultancy Group Limited | Professional & scientific | 2018 |
| HS Grandchildren Trustee One Limited | Other services | 2023 |
| HS Grandchildren Trustee Two Limited | Other services | 2023 |
| HS Prime Estates Ltd | Real estate | 2024 |
| HS Rental Properties Ltd | Real estate | 2020 |
| HSA Holdings Ltd | Administrative & support | 2020 |
| HSA Trades Ltd | Wholesale & retail | 2023 |
| Hsfuk Ltd | Financial services | 2025 |
| Hsjls Limited | Real estate | 2024 |
| Hsplus Ltd | Transport & logistics | 2024 |
| HST Hiring Group Ltd | Information & communication | 2021 |
| HSY 07 Investments Ltd | Real estate | 2018 |
| HT Academy Ltd | Arts & recreation | 2022 |
| HT Barbers Nazm Ltd | Other services | 2021 |
| HT Electrical Limited | Construction | 2019 |
| HT Projects Limited | Information & communication | 2008 |
| HTD Transport Ltd | Agriculture & fishing | 2019 |
| Hthd Ltd | Wholesale & retail | 2016 |
| Htwt Consulting Limited | Professional & scientific | 2024 |
| Hub Multimedia Limited | Professional & scientific | 2012 |
| Hubert Thomas Limited | Hospitality | 2018 |
| Hubworks Property Management Ltd | Real estate | 2022 |
| Huck Construction Limited | Construction | 2005 |
| Huckstar Ltd | Wholesale & retail | 2023 |
| Huda Limited | Hospitality | 2015 |
| Huddersfield Fabrications Ltd | Manufacturing | 2018 |
| Huddle Social Limited | Professional & scientific | 2020 |
| Hudsons Building Services Limited | Construction | 2008 |
| Huff & Puff Garstang Limited | Wholesale & retail | 2024 |
| Huff & Puff Limited | Wholesale & retail | 2024 |
| Huft Limited | Professional & scientific | 2016 |