| Hubble C&C Limited | Financial services | 2020 |
| Hubblepeak Limited | Wholesale & retail | 2025 |
| Hublabel Ltd | Wholesale & retail | 2026 |
| Hubsale Ltd | Information & communication | 2021 |
| Hubuzz Limited | Wholesale & retail | 2015 |
| HUD Structural Design Ltd | Professional & scientific | 2020 |
| Hudd-Laity Management Services Limited | Professional & scientific | 2014 |
| Hudingjian Limited | Wholesale & retail | 2025 |
| Hudson Cars Cardiff Limited | Wholesale & retail | 2023 |
| Hudson Developments (NPT) Ltd | Construction | 2023 |
| Hudson Eyewear Limited | Wholesale & retail | 2023 |
| Huge Energy Ltd | Professional & scientific | 2022 |
| Huggard | Health & social care | 1990 |
| Hugh Bradnum & Co. Limited | Wholesale & retail | 2000 |
| Hugh Damien Limited | Transport & logistics | 2018 |
| Hugh James Financial Services Limited | Extraterritorial | 2004 |
| Hugh James Independent Financial Advisers Limited | Extraterritorial | 2000 |
| Hugh James Involegal LLP | | 2010 |
| Hugh James LLP | | 2010 |
| Hugh James Services Limited | Extraterritorial | 2010 |
| Hugh James Trust Corporation Limited | Professional & scientific | 2017 |
| Hugh Jewsbury Ltd | Health & social care | 2019 |
| Hughes Hopkins Property Limited | Real estate | 2015 |
| Hughes Latam Holdings Ltd | Financial services | 2020 |
| Hughes Logistics Limited | Transport & logistics | 2025 |
| Hughes Property & Lettings Ltd | Real estate | 2024 |
| Hughes Radiological Limited | Professional & scientific | 2019 |
| Hugo Motor Company Ltd | Wholesale & retail | 2025 |
| Hugo's Catering Ltd | Hospitality | 2011 |
| Huguangsheng Limited | Arts & recreation | 2024 |
| HUH Traders Ltd | Wholesale & retail | 2025 |
| HUI Yuan Co., Ltd | Extraterritorial | 2018 |
| Huicheng Education and Careers Consulting Ltd | Other services | 2013 |
| Huihuangvt Ltd | Wholesale & retail | 2025 |
| Huijie International Trade Co., Ltd. | Extraterritorial | 2021 |
| Huios Records Limited | Wholesale & retail | 2020 |
| Huitop Trading Co., Limited | Wholesale & retail | 2011 |
| Huixiangxiang an Culture Media Co., Ltd | Wholesale & retail | 2024 |
| Huiyuan Culture Media Limited | Wholesale & retail | 2025 |
| Huize Media Co., Ltd | Wholesale & retail | 2024 |
| Hujan Asset Management (UK & EU) Ltd | Financial services | 2021 |
| Hujan Asset Management Ltd | Financial services | 2020 |
| Hujwuhr Mart Ltd | Wholesale & retail | 2025 |
| Huks Digital Ltd | Information & communication | 2025 |
| Hulamon Partners PC | | 2019 |
| Hulin UPS Limited | Wholesale & retail | 2026 |
| Hulk AI Ltd | Information & communication | 2025 |
| Hulk Oncology Limited | Health & social care | 2019 |
| Hulk Property Investments Ltd | Real estate | 2019 |
| Hulkmotors Ltd | Wholesale & retail | 2019 |
| Hullsnap Ltd | Information & communication | 2026 |
| Human Apparel Ltd | Wholesale & retail | 2025 |
| Human Avatar Ltd | Professional & scientific | 2022 |
| Human Capital Research Limited | Administrative & support | 2003 |
| Human Data Sciences Limited | Professional & scientific | 2018 |
| Human Insights Limited | Extraterritorial | 2021 |
| Human Performance Services Ltd | Professional & scientific | 2024 |
| Human Resourcing Holdings Ltd | Real estate | 2021 |
| Human Resourcing Limited | Administrative & support | 2000 |
| Human Saga Ltd | Information & communication | 2026 |
| Human Touchpoints Limited | Arts & recreation | 2025 |
| Humarz Ltd | Other services | 2025 |
| Humber Re-Claim Ltd | Wholesale & retail | 2019 |
| Humble Acre Limited | Manufacturing | 2018 |
| Humblebrick Limited | Construction | 2019 |
| Humera Co., Ltd | Wholesale & retail | 2021 |
| Humglow Limited | Wholesale & retail | 2026 |
| Humidity Limited | Information & communication | 2025 |
| Hummer Ltd | Wholesale & retail | 2025 |
| Hummingbird Sales Limited | Professional & scientific | 2014 |
| Humnknd Ltd | Professional & scientific | 2026 |
| Humpfy Limited | Manufacturing | 2024 |
| Humphreys Coaches (Pontypridd) Ltd | Transport & logistics | 2004 |
| Humx Group Ltd | Information & communication | 2025 |
| HUN Heng Heng Limited | Hospitality | 2024 |
| Hunant Limited | Wholesale & retail | 2020 |
| Hunberoo Limited | Financial services | 2019 |
| Hundebett Ltd | Wholesale & retail | 2025 |
| Hundred Taste (UK) Catering Ltd | Manufacturing | 2023 |
| Hungry Bear Gaming Limited | Information & communication | 2019 |
| Hungry Beauty Limited | Wholesale & retail | 2020 |
| Hungry Booth Ltd | Wholesale & retail | 2023 |
| Hungrybear Games Limited | Information & communication | 2022 |
| Hunky Dory Restaurants Ltd | Hospitality | 2005 |
| Hunkydory Trading Ltd | Wholesale & retail | 2021 |
| Hunnic Cyber Limited | Information & communication | 2017 |
| Hunny Beauty Ltd | Wholesale & retail | 2025 |
| Hunt 93 Limited | Real estate | 2021 |
| Hunt Richards Holdings Limited | Financial services | 2020 |
| Hunt SB Limited | Other services | 2010 |
| Hunter Acoustics Limited | Administrative & support | 2002 |
| Hunter Corp UK Limited | Administrative & support | 2019 |
| Hunter Lofts Management Limited | Households | 2001 |
| Hunter Realty Limited | Real estate | 2019 |
| Hunter Stewart Recruitment Ltd | Administrative & support | 2015 |
| Hunter Trade Ltd | Wholesale & retail | 2025 |
| Hunters Wholesale Limited | Wholesale & retail | 2020 |
| Hunterz Lounge Ltd | Wholesale & retail | 2019 |
| Huntort Limited | | 1983 |
| Huntsclan Ltd | Other services | 2025 |