| Hardi's Locum Limited | Health & social care | 2010 |
| Hardings Hairdressing Limited | Other services | 2004 |
| Hardys (UK) Limited | Professional & scientific | 2014 |
| Haris Medics Ltd | Health & social care | 2022 |
| Harmonix Digital Ltd | Professional & scientific | 2023 |
| Harmony Residential Housing Limited | Hospitality | 2024 |
| Harper Harlow Limited | Professional & scientific | 2019 |
| Harper Webb Limited | Professional & scientific | 2025 |
| Harpers Cleaning Limited | Other services | 2009 |
| Harrings Ltd | Manufacturing | 2025 |
| Harris Accountants Limited | Professional & scientific | 2016 |
| Harris HR & Staff Training Ltd | Education | 2015 |
| Harris Therapy Consultancy Limited | Health & social care | 2013 |
| Harrison Design Group Limited | Professional & scientific | 2017 |
| Harrison Intellectual Property Limited | Professional & scientific | 2014 |
| Harrison Johnson Property Limited | Real estate | 2026 |
| Harrison Partners Limited | Professional & scientific | 2018 |
| Harrisons Regal Garage Limited | Wholesale & retail | 1984 |
| Harry Wilkes Toolmaker Ltd | Manufacturing | 2019 |
| Harry Williams & Sons (Cambridge) Limited | Extraterritorial | 1963 |
| Hartill Property Management Ltd | Real estate | 2022 |
| Hartoccupationaltherapy Limited | Health & social care | 2012 |
| Harvest Asset Management Ltd | Financial services | 1998 |
| Harvest Fields Centre Limited | Real estate | 2006 |
| Harvest Fields Community Church | Other services | 2003 |
| Harvest Fields Heating & Plumbing Services Ltd | Construction | 2023 |
| Harvest Fields Homes | Real estate | 1998 |
| Harvest Fields Limited | Professional & scientific | 1999 |
| Harvest Fields Property Services Ltd | Construction | 2023 |
| Harvey Norman Holdings (UK) Limited | Financial services | 2024 |
| Harvey Norman Leasing (UK) Limited | Real estate | 2024 |
| Harvey Norman Trading (UK) Limited | Wholesale & retail | 2024 |
| Harveys Estate Agents Limited | Real estate | 2001 |
| Harvington Estates Ltd | Real estate | 2019 |
| Hasgar Limited | Wholesale & retail | 2025 |
| Haslehursts Limited | Professional & scientific | 2003 |
| Haven Care Services Ltd | Public administration | 2015 |
| Haven Drive (Pennar) Limited | Construction | 2020 |
| Havenlet Ltd | Real estate | 2025 |
| Hawk EYE Property Limited | Real estate | 2026 |
| Hawkes Bay Limited | Real estate | 2022 |
| Hawkes Building Services Ltd | Construction | 2025 |
| Hawksford Limited | Construction | 2016 |
| Hawkwell Management Consultancy Limited | Administrative & support | 2017 |
| Hawthorne Property Services Ltd | Real estate | 2025 |
| Hay's Home & Garden Services Ltd | Construction | 2024 |
| Haycock Construction Ltd | Construction | 2021 |
| Hayer Dwellings Limited | Real estate | 2021 |
| Hayer Estates Ltd | Real estate | 2020 |
| Hayer Professional Services Ltd | Administrative & support | 2021 |
| Hayes Electrics Ltd | Construction | 2025 |
| Hayfield Tech Limited | Information & communication | 2018 |
| Hayward Property Investments LLP | | 2017 |
| Haywater Limited | Real estate | 2025 |
| Hazel Barn Ltd | Professional & scientific | 2008 |
| Hazel Family Investments Limited | Real estate | 2025 |
| Hazels Pine POP Ltd | Wholesale & retail | 2026 |
| Hazeltree Drive (Sutton Coldfield) Management Company Limited | Households | 2011 |
| HB Apex Holdings Ltd | Financial services | 2026 |
| HB Birmingham Limited | Other services | 2021 |
| HB Flooring Limited | Administrative & support | 2014 |
| HB Pharma Services Ltd | Health & social care | 2026 |
| Hbac Systems Ltd | Administrative & support | 2019 |
| HBD Operations Ltd | Information & communication | 2013 |
| HC Security Services Ltd | Administrative & support | 2026 |
| HCR Ventures Limited | Real estate | 2026 |
| HD Apothecary Ltd | Professional & scientific | 2021 |
| HD Prestige Print Limited | Manufacturing | 2020 |
| HDL Imaging Services Ltd | Health & social care | 2026 |
| HDL Properties Ltd | Real estate | 2026 |
| Headway Commercial Assets Ltd | Real estate | 2023 |
| Heal Medclinic Ltd | Health & social care | 2025 |
| Heal Technologies Ltd | Health & social care | 2023 |
| Health Elite Ltd | Health & social care | 2021 |
| Health Matters Specialist Care Ltd | Administrative & support | 2014 |
| Healthcare Clinical Recruitment Limited | Administrative & support | 2024 |
| Healthcare Management Ltd | Manufacturing | 2019 |
| Healthy Soldiers Ltd | Information & communication | 2020 |
| Heart of England Access Hire Limited | Construction | 2015 |
| Heart of England Facilities Limited | Construction | 2020 |
| Heartlands Business Gifts Limited | Wholesale & retail | 2002 |
| Heatfix Plumbing & Heating Limited | Construction | 2015 |
| Heath Mill Holdings Ltd | Financial services | 2013 |
| Heathbrand Ltd | Real estate | 2008 |
| Heathway Homes Limited | Real estate | 2012 |
| Heating and Renewables Limited | Wholesale & retail | 2023 |
| Heating Installation Network Ltd | Construction | 2019 |
| Heatline Plumbing & Heating Services Ltd | Construction | 2026 |
| Heatpoint Solutions Ltd | Construction | 2026 |
| Heaven Gate Properties Limited | Real estate | 2025 |
| Heaven Holdings (AJ) Ltd | Financial services | 2023 |
| Heaven Sends Limited | Wholesale & retail | 2003 |
| Heavenly Ltd | Wholesale & retail | 2015 |
| Hecla Consulting & Project Management Limited | Administrative & support | 2013 |
| Heighton & SON Ltd. | Extraterritorial | 1989 |
| Hello Skin Aesthetics (Birmingham) Ltd | Other services | 2023 |
| Hello Skin Aesthetics Ltd | Other services | 2022 |
| Helm Properties Management Ltd | Real estate | 2025 |
| Help Limited | Information & communication | 2023 |
| Helter Skelter Media Limited | Information & communication | 2000 |