| Haben Ltd | Real estate | 2026 |
| Habeo Limited | Information & communication | 2023 |
| Haber Operations Ltd | Administrative & support | 2025 |
| Habgro Limited | Professional & scientific | 1963 |
| Habib & Khabib Ltd | Wholesale & retail | 2026 |
| Habib Aslam Ltd | Wholesale & retail | 2025 |
| Habib Associates Limited | Professional & scientific | 2012 |
| Habib Auto Servicing Ltd | Wholesale & retail | 2026 |
| Habib Group Ltd | Professional & scientific | 2020 |
| Habib Optical Ltd | Wholesale & retail | 2023 |
| Habib Ventures Limited | Health & social care | 2018 |
| HABIB6 Holdings Ltd | Financial services | 2025 |
| Habibi Constructions Ltd | Other services | 2023 |
| Habibullah Property Group Limited | Real estate | 2026 |
| Habibullah Services Limited | Administrative & support | 2025 |
| Habigail Limited | Wholesale & retail | 2017 |
| Habile Healthcare Ltd | Health & social care | 2022 |
| Habitat Club Limited | Hospitality | 2021 |
| Habitat Investments Holding Ltd | Professional & scientific | 2015 |
| Habitat Music Studios Limited | Information & communication | 2021 |
| Habitat Properties MCR Limited | Real estate | 2025 |
| Habitat Property Group Ltd | Real estate | 2025 |
| Habitat Rehearsal and Media Studios Ltd | Information & communication | 2026 |
| Habitat Spec Ltd | Real estate | 2020 |
| Habitatge Norway Limited | Real estate | 2025 |
| Habitation (NW) Ltd | Real estate | 2017 |
| Habitec Developments Limited | Construction | 2025 |
| Habiur Inc. Ltd | Information & communication | 2025 |
| Habizz Limited | Wholesale & retail | 2025 |
| Habour Freight Logistics Ltd | Transport & logistics | 2014 |
| Habracha Developments Limited | Construction | 2019 |
| Habracha Limited | Professional & scientific | 2019 |
| Habram (Stockport) Limited | Construction | 2018 |
| Habs Smith Holder Limited | Wholesale & retail | 2025 |
| Habstone Solution Ltd | Information & communication | 2024 |
| Habu Fashion Limited | Other services | 2012 |
| Habu Group Ltd | Administrative & support | 2023 |
| Hace Investments Limited | Financial services | 2020 |
| Hace: Data Changing Child Labour Limited | Information & communication | 2020 |
| Hache MCR Ltd | Hospitality | 2022 |
| Hachi Sport Limited | Other services | 2014 |
| Hachipax Media Ltd | Information & communication | 2017 |
| Hackenbacker Limited | Information & communication | 1995 |
| Hackney Assets (NO 2) Limited | Professional & scientific | 2009 |
| Hackney Solutions Limited | Other services | 2014 |
| Hackney Witch Limited | Extraterritorial | 2016 |
| Hacktivist Labs Limited | Information & communication | 2024 |
| Haco Associates Limited | Professional & scientific | 2026 |
| Hada Services Ltd | Professional & scientific | 2024 |
| Hadarah Academy Ltd | Education | 2025 |
| Hadarium Star Ltd | Wholesale & retail | 2023 |
| Hadbutt Management Company Ltd | Households | 2026 |
| Hadden Grounds Maintenance Ltd | Administrative & support | 2026 |
| Haddenham Day Nursery Limited | Education | 2017 |
| Haddi Enterprises Ltd | Wholesale & retail | 2024 |
| Haddison & Co Accountants Ltd | Professional & scientific | 2014 |
| Haddison & Co Property Ltd | Real estate | 2020 |
| Haddon Limited | Administrative & support | 2002 |
| Hadeed Travels Ltd | Administrative & support | 2025 |
| Hadeel Nabil Rababah for Trading Ltd | Other services | 2021 |
| Hadenkey Limited | Wholesale & retail | 2020 |
| Hades Equity Limited | Financial services | 2025 |
| Hades U.K. Imports Ltd. | Wholesale & retail | 2020 |
| Hadfelda Consulting Ltd | Information & communication | 2015 |
| Hadfield Health Ltd | Health & social care | 2019 |
| Hadfield Heating and Bathrooms Ltd | Construction | 2021 |
| Hadfield Property Company (NW) Limited | Real estate | 2026 |
| Hadfield Property Management and Investments Limited | Professional & scientific | 2024 |
| Hadfield Services Limited | Professional & scientific | 2009 |
| Hadfield-Solutions Limited | Energy | 2025 |
| Hadhwanaag Boutique Limited | Wholesale & retail | 2025 |
| Hadi & Rania Limited | Wholesale & retail | 2025 |
| Hadi Builders (MAN) Limited | Construction | 2022 |
| Hadi Haris Bilal Ltd | Wholesale & retail | 2024 |
| Hadi Take Away Ltd | Hospitality | 2023 |
| Hadi's Hub Limited | Wholesale & retail | 2025 |
| HADI12 Ltd | Wholesale & retail | 2025 |
| Hadirajoka Ltd | Transport & logistics | 2024 |
| Hadis Kart Ltd | Wholesale & retail | 2025 |
| Hadisportsuk Ltd | Wholesale & retail | 2025 |
| Hadley & Cannus Holdings Ltd | Construction | 2025 |
| Hadley Engineering Consultants Limited | Professional & scientific | 2022 |
| Hadon Power Service Ltd | Construction | 2025 |
| Hady & Hamza Limited | Health & social care | 2019 |
| Haemhealthcare Limited | Health & social care | 2026 |
| Hafedh Shaiea Ltd | Wholesale & retail | 2025 |
| Hafeez and Sajeel Ltd | Hospitality | 2024 |
| Hafeez Unique Ltd | Wholesale & retail | 2025 |
| Hafen Holdings Limited | Financial services | 2024 |
| Hafferty Interiors Ltd | Manufacturing | 2026 |
| Hafferty Joinery Limited | Construction | 2021 |
| Haffner Hoff Auditors Ltd | Professional & scientific | 2010 |
| Haffner Hoff Limited | Professional & scientific | 2019 |
| Haffner Holdings Ltd | Financial services | 2024 |
| Hafi Company Limited | Health & social care | 2011 |
| Hafiz Hamood-Ur-Rehman Limited | Other services | 2012 |
| Hafizah Limited | Other services | 2023 |
| Hafod Landfill Ltd | Water & waste | 2026 |
| Hafs Traders Ltd | Wholesale & retail | 2021 |
| Hafs Trading Ltd | Wholesale & retail | 2026 |