| Halal Treasures Limited | Wholesale & retail | 2022 |
| Halcyon Data Services Limited | Information & communication | 2019 |
| Halcyon Palace Ltd | Information & communication | 2017 |
| Haldane Health Limited | Health & social care | 2022 |
| Haleemah Sadiyya Ltd | Health & social care | 2022 |
| Half a Donkey Limited | Wholesale & retail | 2012 |
| Halfway Garage (Properties) Limited | Other services | 1961 |
| Halifax Dental Ltd | Health & social care | 2024 |
| Halifax FC Girls Ltd | Arts & recreation | 2024 |
| Halifax Indoor Football Centre Ltd | Other services | 2022 |
| Halifax Mosques Together Limited | Administrative & support | 2015 |
| Halifax Old Road Management Limited | Real estate | 1997 |
| Halifax Packaging Limited | Wholesale & retail | 2021 |
| Hall Construction (Yorkshire) Ltd | Construction | 2022 |
| Hall Fire Protection Limited | Construction | 2018 |
| Hallgate Cars Ltd | Transport & logistics | 2018 |
| Hallie Ltd | Health & social care | 2025 |
| Halls Electrical Services Ltd | Construction | 2023 |
| Halo Business Analyst Limited | Professional & scientific | 2023 |
| Halo Holdings UK Ltd | Real estate | 2019 |
| Halo Nails & Spa Ltd | Other services | 2017 |
| Haloskin Trading Limited | Wholesale & retail | 2026 |
| Halstead Commercial Limited | Real estate | 2025 |
| Halstead Events Limited | Agriculture & fishing | 2026 |
| Halstead Farm Shop Limited | Wholesale & retail | 2025 |
| Halstead Farming Limited | Agriculture & fishing | 2024 |
| Halstead Holdings (Yorkshire) Limited | Financial services | 2024 |
| Halstead Homes (Builders) Limited | Construction | 2025 |
| Halstead Investments (Yorkshire) Limited | Real estate | 2024 |
| Halsted Wholesale Ltd | Wholesale & retail | 2022 |
| Hamdo Limited | Administrative & support | 2009 |
| Hamilton and James Ltd | Extraterritorial | 2019 |
| Hamilton Woods Associates Limited | Administrative & support | 2017 |
| Hamsheen Limited | Wholesale & retail | 2023 |
| Hamson Homes Ltd | Real estate | 2025 |
| Hamtons Direct Limited | Other services | 2013 |
| Hamza Alam Ltd | Wholesale & retail | 2025 |
| Hancox & Co Ltd | Professional & scientific | 2010 |
| Hancox Accountants Ltd | Administrative & support | 2016 |
| Hand & Wrist Clinic Ltd | Health & social care | 2025 |
| Handimac Ltd | Construction | 2024 |
| Handmadebyannya Ltd | Manufacturing | 2023 |
| Hanfia Academy Ltd | Education | 2021 |
| Hanivilla Limited | Administrative & support | 2017 |
| Hanivilla Properties Ltd | Real estate | 2024 |
| Hannah Merriman Limited | Health & social care | 2016 |
| Hannah Spring Consultancy Ltd | Health & social care | 2023 |
| Hannah's Kitchen Limited | Hospitality | 2005 |
| Hanopify Limited | Wholesale & retail | 2024 |
| Hanson Boxes Limited | Transport & logistics | 2010 |
| Hanson Capital Advisers Ltd | Professional & scientific | 2023 |
| Hanson Court Limited | Real estate | 2022 |
| Hanson Family Holdings Limited | Administrative & support | 1965 |
| Hanson Finance Solutions Ltd | Financial services | 2023 |
| Hanson Sports Limited | Arts & recreation | 2020 |
| Hanvey Corporate Limited | Administrative & support | 2009 |
| Hanwood Limited | Extraterritorial | 1986 |
| Haol Limited | Real estate | 2019 |
| Happi World Ltd | Wholesale & retail | 2025 |
| Happy Choc Ltd | Manufacturing | 2025 |
| Happy Curations Limited | Manufacturing | 2017 |
| Happy Dog Holdings Limited | Professional & scientific | 2022 |
| Happy Entertainment Holdings Ltd | Financial services | 2025 |
| Happy Hive Collection Ltd | Wholesale & retail | 2023 |
| Happy Meadows Dog Parks Ltd. | Real estate | 2021 |
| Happy Mole Ltd | Information & communication | 2025 |
| Happy Pockets Ltd | Wholesale & retail | 2023 |
| Hapt Consulting Limited | Professional & scientific | 2019 |
| HAQ Optical Limited | Health & social care | 2013 |
| HAQ Pharm Ltd | Wholesale & retail | 2018 |
| HAQ Property Group Limited | Real estate | 2025 |
| Haqj Limited | Professional & scientific | 2023 |
| Haqlad Limited | Wholesale & retail | 2024 |
| Harajuku Heaven Ltd | Wholesale & retail | 2026 |
| Haran Plant Racing Ltd | Manufacturing | 2025 |
| Harbeck Facilities Management Limited | Real estate | 2025 |
| Harbour Nest Supported Services CIC | Real estate | 2025 |
| Hard Shoulder Movie Limited | Information & communication | 2009 |
| Hardwick-Wilson Properties Ltd | Real estate | 2026 |
| Hardy Care Services Limited | Health & social care | 2022 |
| Hardy Utilities Ltd | Water & waste | 2020 |
| Harebridge Online Shop Limited | Wholesale & retail | 2025 |
| Harind Limited | Extraterritorial | 2019 |
| Haris Peckish Cafe Ltd | Hospitality | 2026 |
| Harjo Construction Ltd | Construction | 2025 |
| Hark Capital Ltd | Real estate | 2025 |
| Hark Ltd | Real estate | 2018 |
| Harks Property Ltd | Real estate | 2024 |
| Harlequins Huds Ltd | Hospitality | 2019 |
| Harlequins Pizza Limited | Hospitality | 2023 |
| Harman K'S Ltd | Professional & scientific | 2021 |
| Harmonic Imaging Ltd | Health & social care | 2022 |
| Harmony Events Decor Ltd | Other services | 2025 |
| Harmony Helping Hands Ltd | Other services | 2025 |
| Harmony of Health Ltd | Health & social care | 2024 |
| Harmony Secure Transport Ltd | Transport & logistics | 2023 |
| Harold Hinchliffe Limited | Professional & scientific | 1962 |
| Harpers Interiors Limited | Wholesale & retail | 2018 |
| Harqum Limited | Wholesale & retail | 2018 |
| Harrier NO 1 Limited | Professional & scientific | 2001 |