| Hot House Blinds & Curtains Limited | Wholesale & retail | 2008 |
| Hot House Investments Limited | Real estate | 2022 |
| Hot MK Ltd | Other services | 2019 |
| Hot Scotch Limited | Wholesale & retail | 2015 |
| Hotel Sierra Charlie Ltd | Wholesale & retail | 2025 |
| Hotfood at £4.99 Ltd | Hospitality | 2025 |
| Hothi Ortho Ltd | Administrative & support | 2017 |
| Houdini’S Escape Room Experience Limited | Arts & recreation | 2008 |
| Houghton Conquest Self-Build Limited | Construction | 2019 |
| Hourly Resources Limited | Construction | 2003 |
| Hourmight Limited | Other services | 1988 |
| House Flip Ventures Ltd | Construction | 2024 |
| House of Alchemy Productions Ltd | Arts & recreation | 2024 |
| House of Architecture Limited | Professional & scientific | 2011 |
| House of Bassuni Ltd | Real estate | 2022 |
| House of Biscotti Limited | Manufacturing | 2023 |
| House of CHI Official Limited | Wholesale & retail | 2025 |
| House of Everett Limited | Manufacturing | 2025 |
| House of Lewis Limited | Professional & scientific | 2014 |
| House of Nine Limited | Professional & scientific | 2025 |
| House of the Bold Limited | Real estate | 2021 |
| House of the Provident Ltd | Professional & scientific | 2025 |
| House That Juice Built Ltd. | Hospitality | 2011 |
| House to Haven Ltd | Wholesale & retail | 2020 |
| Housing Management Limited | Real estate | 2015 |
| Howard Avenue Ltd | Households | 2025 |
| Howell (ELY) LLP | | 2008 |
| Howlies Ltd | Administrative & support | 2018 |
| Howorth Holdings Ltd | Financial services | 2025 |
| Hoys and Bows EGG and Game Rearing Services Ltd | Agriculture & fishing | 2019 |
| HP Global Ventures Ltd | Wholesale & retail | 2026 |
| HP Meppershall Limited | Administrative & support | 2025 |
| HP Motors Ltd | Real estate | 2018 |
| HPG Services Limited | Administrative & support | 2025 |
| HPH Solutions Ltd | Construction | 2025 |
| HPN Property Services Ltd | Real estate | 2019 |
| HPS Discounts Ltd | Wholesale & retail | 2025 |
| HPS Financial Services Ltd | Financial services | 2023 |
| HR & Mediation Services Ltd | Professional & scientific | 2025 |
| HR 7 Services Ltd | Professional & scientific | 2016 |
| HR Delivered Ltd | Professional & scientific | 2021 |
| HR Global Ltd | Real estate | 2019 |
| Hrmeadstransport Ltd | Transport & logistics | 2021 |
| HS International Limited | Wholesale & retail | 2022 |
| HSA Property Investments Ltd | Real estate | 2024 |
| HSF Consulting Ltd | Real estate | 2018 |
| HSM Communications Ltd | Professional & scientific | 2023 |
| HSP Consulting Ltd | Information & communication | 2024 |
| HSR Accountants Ltd | Professional & scientific | 2011 |
| HSS Electrical Contractors Ltd | Construction | 2013 |
| HSS Healthcare Ltd | Health & social care | 2026 |
| HST Consultants Ltd | Professional & scientific | 2013 |
| HT Bedford Limited | Hospitality | 2021 |
| HT Car Sales Ltd | Wholesale & retail | 2018 |
| HT Medical Ltd | Health & social care | 2021 |
| HTS Training Limited | Professional & scientific | 2010 |
| Hub Demolition Services Ltd | Construction | 2016 |
| Hublet Ltd | Administrative & support | 2021 |
| Huckleberry Construction Limited | Construction | 2019 |
| Huco Engineering Industries Limited | Manufacturing | 1965 |
| Hudson Homes (UK) Limited | Real estate | 2007 |
| Hudson West Group Limited | Financial services | 2023 |
| Hudson West Ltd | Construction | 2019 |
| Hughes Tech Services Ltd | Administrative & support | 2019 |
| Hugo Isaacs Ltd | Professional & scientific | 2017 |
| Hulatt Services Limited | Professional & scientific | 2020 |
| Human-Now Ltd | Professional & scientific | 2025 |
| Humanloop AI Ltd | Information & communication | 2026 |
| Humara Ltd | Information & communication | 2026 |
| Humphrey & Kirk Ltd | Administrative & support | 2024 |
| Humphriss & Burgess Optometrists Ltd | Other services | 2012 |
| Hundal Homes Ltd | Real estate | 2021 |
| Hundy Gilbert Media Ltd | Information & communication | 2008 |
| Hungarian School and Community Northamptonshire Magyar Tanoda ES Kozosseg Northamptonshire CIC | Education | 2019 |
| Hungerhill Vineyard Ltd | Agriculture & fishing | 2020 |
| Hunor Ltd | Wholesale & retail | 2015 |
| Hunter & URO Limited | Professional & scientific | 2015 |
| Hunter Plastering Ltd | Construction | 2020 |
| Huntergold Limited | Real estate | 1971 |
| Huntree Fencing (Holdings) Limited | Professional & scientific | 2010 |
| Huntree Fencing Partners Ltd | Professional & scientific | 2026 |
| Hunts Kart Racing Club Limited | Arts & recreation | 1981 |
| Hunts Motors Bedford Ltd | Wholesale & retail | 2019 |
| Hunts Private Hire Services Ltd | Transport & logistics | 2025 |
| Hurll Technical Services Ltd | Professional & scientific | 2015 |
| Hurst Cars Ltd | Wholesale & retail | 2013 |
| Hurst Contractors Ltd | Construction | 2022 |
| Husain Hydrographic Services Ltd | Professional & scientific | 2021 |
| Hussain Trade Solutions Ltd | Administrative & support | 2026 |
| Hustle DA Money Records Ltd | Information & communication | 2020 |
| Huteleven Limited | Information & communication | 2016 |
| HV Aesthetics Ltd | Other services | 2025 |
| HW Mason & Sons (Farming) Ltd | Agriculture & fishing | 2020 |
| HW Mason & Sons (Holdings) Ltd | Agriculture & fishing | 2020 |
| HWM Finance Limited | Financial services | 2022 |
| HWM Landscapes Ltd | Professional & scientific | 2026 |
| HWP Solutions Limited | Other services | 2020 |
| Hybrid Air Vehicles Limited | Manufacturing | 2007 |
| Hybrid Interiors Ltd | Construction | 2025 |
| Hydro-Fi Ltd | Wholesale & retail | 2026 |