| HAC Doctors Limited | Health & social care | 2023 |
| HAC Holdings (Wales) Limited | Manufacturing | 2013 |
| HAC IT Solutions Ltd | Information & communication | 2024 |
| Hacheston Ltd | Wholesale & retail | 2020 |
| Hacj Property Investment Limited | Real estate | 2013 |
| Hackett Heating Ltd | Construction | 2023 |
| Hackett Integrated Systems Ltd | Information & communication | 2017 |
| Hackett Management Systems Ltd | Information & communication | 2014 |
| Hackthemidlands CIC | Professional & scientific | 2019 |
| Hackyde Limited | Wholesale & retail | 2012 |
| Hackzia Systems Ltd | Information & communication | 2019 |
| HAD Solutions Ltd | Real estate | 2026 |
| Hadassah Ltd | Public administration | 2018 |
| Hadbrook Recruitment Ltd | Administrative & support | 2023 |
| Haddad Trading Ltd | Wholesale & retail | 2025 |
| Haddiz Ltd | Extraterritorial | 2024 |
| Haddon Pharma Ltd | Health & social care | 2024 |
| Haddonvale Consultancy Limited | Professional & scientific | 2012 |
| Haddy and Horeja's Limited | Health & social care | 2017 |
| Haden Management Company Limited | Real estate | 1982 |
| Hadenmay Limited | Wholesale & retail | 2024 |
| Hadens Birmingham Limited | Wholesale & retail | 2019 |
| Hadens Birmingham WRC Ltd | Wholesale & retail | 2026 |
| Hadens WRC Limited | Wholesale & retail | 2026 |
| Hades Shop Limited | Wholesale & retail | 2016 |
| Hadhramaut Botanical Ltd | Wholesale & retail | 2026 |
| Hadi Birmingham Ltd | Hospitality | 2022 |
| Hadi Construction Ltd | Construction | 2024 |
| Hadi Protection Ltd | Administrative & support | 2025 |
| Hadid Law Solicitors Limited | Professional & scientific | 2019 |
| Hadidas First Class Service Ltd | Administrative & support | 2023 |
| Hadiqa Collection Ltd | Wholesale & retail | 2023 |
| Hadis Logistic Ltd | Transport & logistics | 2025 |
| Hadisii Ltd | Information & communication | 2026 |
| Hadiyas Group Ltd. | Construction | 2024 |
| Hadleigh Estate Agents Limited | Real estate | 2009 |
| Hadleigh UK Holdings Limited | Financial services | 2017 |
| Hadley & Hipkiss Ltd | Manufacturing | 2020 |
| Hadley Build Limited | Wholesale & retail | 2020 |
| Hadley Care Homes Ltd | Health & social care | 2023 |
| Hadley Education Ltd | Education | 2022 |
| Hadley Educational | Education | 2018 |
| Hadley Hall Limited | Extraterritorial | 2013 |
| Hadley Investment Group Limited | Real estate | 2024 |
| Hadley Park Limited | Extraterritorial | 2003 |
| Hadley Therapy LLP | | 2017 |
| Hadley Utilities Ltd | Real estate | 2022 |
| Hadora Properties Limited | Real estate | 2023 |
| Hadrian Labs Ltd | Financial services | 2025 |
| Hadri’S Barbers Ltd | Other services | 2026 |
| Hadwen Property Limited | Real estate | 2013 |
| Hadwin Limited | Other services | 2022 |
| HAE Enterprise Ltd | Administrative & support | 2023 |
| Haednetheus Ltd | Administrative & support | 2021 |
| Haeger Stunt & Wireworks Limited | Administrative & support | 2006 |
| Hael Solutions Ltd | Information & communication | 2021 |
| Haematology Services Ltd | Health & social care | 2022 |
| Haens Ltd | Administrative & support | 2015 |
| HAF Property Ltd | Real estate | 2015 |
| Hafa Ltd | Wholesale & retail | 2018 |
| Hafeez Optical Limited | Professional & scientific | 2017 |
| Hafh Property Limited | Hospitality | 2023 |
| Hafiz Consultancy Services Limited | Education | 2021 |
| Hafiz Digital Spot Ltd | Information & communication | 2024 |
| Hafiz Electrical Engineers Limited | Construction | 2014 |
| Hafiz Halal Meat and Poultry Ltd | Wholesale & retail | 2025 |
| Hafiz Healthcare Ltd | Health & social care | 2023 |
| Hafiz Muhammad Waqas Ltd | Wholesale & retail | 2022 |
| Hafizbilal Ltd | Wholesale & retail | 2025 |
| Hafsa Pharma Limited | Health & social care | 2023 |
| Hafzon Limited | Wholesale & retail | 2025 |
| Hagen Building Consultancy Ltd | Professional & scientific | 2020 |
| Hagers Tattersdill Ltd | Professional & scientific | 2022 |
| Hagi Camara 1604 Ltd | Transport & logistics | 2025 |
| Hagley & Crantock Residents Association Limited | Households | 1999 |
| Hagley (Birmingham) Properties Ltd | Real estate | 2021 |
| Hagley Bakery Ltd | Wholesale & retail | 2024 |
| Hagley Construction Limited | Construction | 2019 |
| Hagley Consultancy Ltd | Administrative & support | 2026 |
| Hagley Engineering Limited | Manufacturing | 1993 |
| Hagley Flooring Ltd | Wholesale & retail | 2019 |
| Hagley Furniture and Flooring Ltd | Wholesale & retail | 2022 |
| Hagley Health Care Ltd | Health & social care | 2022 |
| Hagley Holdings Limited | Financial services | 1983 |
| Hagley Homes Limited | Construction | 2015 |
| Hagley Hotels (Hagley) Limited | Hospitality | 2026 |
| Hagley Investments Limited | Real estate | 2024 |
| Hagley Properties UK Limited | Hospitality | 2006 |
| Hagley Property Management Ltd | Real estate | 2014 |
| Hagley Road Detailing Ltd | Administrative & support | 2022 |
| Hagley Road Motors Ltd | Other services | 2014 |
| Hagley Road Valeting Centre Ltd | Administrative & support | 2018 |
| Hagley Road Valeting Ltd | Administrative & support | 2018 |
| Hagley Systems Ltd | Information & communication | 2026 |
| Hagley Ventures Ltd | Hospitality | 2024 |
| Hagleys Beauty Academy Ltd | Health & social care | 2023 |
| Hague Ensemble C.I.C. | Arts & recreation | 2025 |
| HAH Group Holdings Ltd | Financial services | 2025 |
| Hahman Services Limited | Public administration | 2018 |
| HAHOLDINGS888 Limited | Real estate | 2018 |