| Hayat Novaderm Ltd | Other services | 2026 |
| Haydn George (Construction) Ltd | Construction | 2019 |
| Haydn George (Properties) Ltd | Real estate | 2023 |
| Hayells Ltd | Other services | 2022 |
| Hayley’S Helping Hands Ltd | Administrative & support | 2026 |
| Hayllar Roofing Services Ltd | Construction | 2023 |
| Hazard Rush Logistics Ltd | Transport & logistics | 2026 |
| Haze Showers Ltd | Manufacturing | 2023 |
| Hazem Electric Bikes Ltd | Extraterritorial | 2024 |
| HB Electrical Services Hull Ltd | Construction | 2025 |
| HB Subsea Cable Services Ltd | Professional & scientific | 2025 |
| HBC Property Developers Limited | Construction | 2017 |
| Hbot UK Ltd | Health & social care | 2016 |
| HBS Trading Ltd | Wholesale & retail | 2019 |
| Hbtc 360 Ltd | Real estate | 2023 |
| Hcha Trinity Limited | Administrative & support | 2007 |
| Hclr Services Limited | Professional & scientific | 2019 |
| Hcm.Style Ltd | Wholesale & retail | 2020 |
| Hcuk Resourcing Ltd | Education | 2010 |
| HD IT Services Ltd | Information & communication | 2025 |
| Hd's Finishers Limited | Construction | 2021 |
| HDM Aesthetics Ltd | Other services | 2018 |
| HDM Cleaning and Maintenance Limited | Administrative & support | 2024 |
| HDM Energies Ltd | Professional & scientific | 2023 |
| HDM Property Holdings Ltd | Real estate | 2023 |
| HDM Safety Limited | Public administration | 2024 |
| HDM Sports Holdings Limited | Real estate | 2025 |
| HDM Worldwide Ltd | Construction | 2017 |
| Head & Sole (Builders)Limited | Wholesale & retail | 1965 |
| Head First Coaching and Consulting Ltd | Other services | 2018 |
| Head-On Electrical Limited | Construction | 2009 |
| Head-On Renewables Limited | Construction | 2017 |
| Headland Plant Limited | Administrative & support | 1977 |
| Headless Digital Limited | Information & communication | 2025 |
| Headmasters Hair Design Limited | Other services | 2021 |
| Headstart Properties UK Limited | Real estate | 2010 |
| Headstart Property Maintenance Limited | Construction | 2014 |
| Health and Safety Dialogue Company Ltd | Professional & scientific | 2018 |
| Health and Safety Training Services Limited | Education | 1995 |
| Health Insurance Brokers Ltd | Financial services | 2022 |
| Health Outcomes Solutions Technology CIC | Information & communication | 2019 |
| Healthwatch East Riding of Yorkshire CIC | Health & social care | 2013 |
| Healthwatch Kingston Upon Hull CIC | Health & social care | 2013 |
| Healthwatch North Lincolnshire CIC | Health & social care | 2013 |
| Healthynepios Ltd | Information & communication | 2026 |
| Hearclearspecialists Ltd | Health & social care | 2025 |
| Hearing Logic Limited | Wholesale & retail | 2017 |
| Heart and Hearth Ltd | Manufacturing | 2024 |
| Heart Break Hotel Limited | Hospitality | 2003 |
| Heartfelt Services Ltd | Health & social care | 2025 |
| Hearth Family Ltd | Hospitality | 2020 |
| Heasty Property Limited | Real estate | 2018 |
| Heat and Water Ltd | Construction | 2016 |
| Heat Insulation Ltd | Construction | 1989 |
| HEAT4 Ltd | Wholesale & retail | 2024 |
| Heathvine Properties Limited | Construction | 2001 |
| Heating Holdings Limited | Professional & scientific | 2001 |
| Heating Products Limited | Wholesale & retail | 2001 |
| Heatmaster (Hull) Limited | Construction | 2015 |
| Heatwise Academy Ltd | Education | 2025 |
| Heaven on Earth Tabernacle Ltd | Other services | 2021 |
| Heavenly Aesthetics by Stacey Ltd | Other services | 2024 |
| Heavenly Properties Limited | Real estate | 2023 |
| Heavyside Holdings Limited | Financial services | 2022 |
| Heavysideco Limited | Wholesale & retail | 2022 |
| Hebden Court (York) Management Company Limited | Households | 2005 |
| Hedcott Estates Limited | Hospitality | 2017 |
| Hedcott Limited | Hospitality | 2021 |
| Hedgehog Builds Limited | Construction | 2023 |
| Hedi Valeting Center Ltd | Administrative & support | 2026 |
| Hedley L. Burman & SON Limited | Construction | 2010 |
| Hedon & Preston Properties Ltd | Real estate | 2025 |
| Hedon Blinds Ltd | Wholesale & retail | 2025 |
| Hedon Carpets & Beds Limited | Wholesale & retail | 2005 |
| Hedon Estates Ltd | Real estate | 2018 |
| Hedon Hardware Limited | Wholesale & retail | 2025 |
| Hedon Mobility Solutions Ltd | Wholesale & retail | 2024 |
| Hedon Park Limited | Real estate | 2013 |
| Hedon Sandwich & Coffee Co Limited | Hospitality | 2025 |
| Hedon Steel Fabrications & Engineering Limited | Manufacturing | 2007 |
| Hedon Stores Ltd | Wholesale & retail | 2024 |
| Heeco Technologies Ltd | Manufacturing | 2019 |
| Hegi Homes Ltd | Real estate | 2025 |
| Helen Sainty SLT Ltd | Health & social care | 2022 |
| Helix CMS Limited | Construction | 2020 |
| Helix Precision Machining Limited | Manufacturing | 2003 |
| Helix-Fms Ltd | Construction | 2021 |
| Hellenic Meze Hull Ltd | Hospitality | 2025 |
| Hello Creativity Ltd | Wholesale & retail | 2023 |
| Hello Recruitment Services Limited | Administrative & support | 2025 |
| Helm and Hull Group Ltd | Construction | 2020 |
| Help for Health | Health & social care | 2002 |
| Helptide Ltd | Administrative & support | 2025 |
| Helston Properties Ltd | Real estate | 2010 |
| Helston Timber Frame Limited | Manufacturing | 2010 |
| Hemp Trades Association UK Ltd | Other services | 2016 |
| Henderton Limited | Professional & scientific | 2016 |
| Heng Properties Ltd | Real estate | 2025 |
| Heng Shun 888 Ltd | Hospitality | 2022 |
| Henry Hird Limited | Wholesale & retail | 1958 |