| Hamer Property Investments Limited | Real estate | 2017 |
| Hamer's Carpets Limited | Wholesale & retail | 2007 |
| Hamill Property Services Ltd | Real estate | 2023 |
| Hamilton & Mhangami Property Investments Ltd | Real estate | 2022 |
| Hamilton Barrett Properties Ltd | Real estate | 2023 |
| Hamilton C C Limited | Professional & scientific | 2014 |
| Hamilton Group Holdings Limited | Financial services | 2017 |
| Hamilton Mayer Limited | Administrative & support | 2015 |
| Hamilton Recruitment Consultants Limited | Administrative & support | 2020 |
| Hamiltonweir Limited | Administrative & support | 2023 |
| Hamish Munton Sales and Solutions UK Limited | Professional & scientific | 2014 |
| Hamma Ltd | Financial services | 2025 |
| Hammad Ashraf Ltd | Health & social care | 2024 |
| Hammer & Tong Holdings Ltd | Financial services | 2020 |
| Hammer and Spanners Limited | Administrative & support | 2021 |
| Hammond Developments Limited | Administrative & support | 2003 |
| Hamno Kitchen Ltd | Construction | 2025 |
| Hamoke Ltd | Manufacturing | 2026 |
| Hamond House Day Nursery Gomersal Ltd | Education | 2025 |
| Hampa Ltd | Wholesale & retail | 2022 |
| Hampden House Ltd | Real estate | 2023 |
| Hampson House Leeds Ltd | Health & social care | 2025 |
| Hampton Court Maintenance Limited | Households | 1986 |
| Hampton Investments (Mill Hill) Ltd | Financial services | 2022 |
| Hampton Landoso Holdings Ltd | Financial services | 2026 |
| Hamsard 3476 Limited | Professional & scientific | 2017 |
| Hamsard 3774 Limited | Manufacturing | 2024 |
| Hamten Investments Ltd | Real estate | 2020 |
| Hamudi Ltd | Wholesale & retail | 2022 |
| Hamuli Digital Consulting Ltd | Information & communication | 2025 |
| Hamza Pharm Limited | Other services | 2021 |
| Hamza Used Auto Parts Ltd | Wholesale & retail | 2019 |
| Hamzah Medical Ltd | Health & social care | 2023 |
| Hamzar Quality Traders Limited | Other services | 2025 |
| HAN Studios Ltd | Manufacturing | 2025 |
| Hana Logistics Limited | Transport & logistics | 2026 |
| Hana Matsuri Ltd | Hospitality | 2016 |
| Hana Mayfair Limited | Other services | 2025 |
| Hana Petroleum Limited | Wholesale & retail | 2012 |
| Hanaxion Ltd | Information & communication | 2022 |
| Hancock Security Ltd | Administrative & support | 2022 |
| Hand Craft Beds Limited | Manufacturing | 2016 |
| Hand Craft Group Limited | Financial services | 2022 |
| Handled Fulfilment Limited | Professional & scientific | 2014 |
| Handlesandstuff.Com Limited | Manufacturing | 2004 |
| Handley Gibson Limited | Real estate | 2018 |
| Handn Management Limited | Other services | 2016 |
| Handpicked Hall LLP | | 2012 |
| Hands of Time Limited | Extraterritorial | 2022 |
| Hands OFF A.I Ltd | Professional & scientific | 2023 |
| Hands on Finishing (Leeds) Limited | Manufacturing | 2005 |
| Hands on Heart Care Limited | Public administration | 2025 |
| Hands on Productions Ltd | Professional & scientific | 2024 |
| Hands on Recruitment (Normanton) Limited | Administrative & support | 2000 |
| Hands Surveying Ltd | Real estate | 2024 |
| Handwell House Limited | Real estate | 2017 |
| Handy Henrys Heroes Ltd | Households | 2020 |
| Handyman Services Morley Ltd | Construction | 2021 |
| Handymans Supplies (Morley) Limited | Wholesale & retail | 1975 |
| Handytize Limited | Wholesale & retail | 2020 |
| Handzlik Properties Ltd | Financial services | 2024 |
| Hang WON Hong (Leeds) Limited | Wholesale & retail | 2009 |
| Hanga Healthcare Services Ltd | Health & social care | 2018 |
| Hanglands Ltd | Professional & scientific | 2021 |
| Hanif Property Ltd | Real estate | 2025 |
| Hankinson Limited | Construction | 1998 |
| Hanlon Maintenance Ltd | Other services | 2021 |
| Hanmol Limited | Real estate | 2012 |
| Hann Living Limited | Real estate | 2026 |
| Hanna Immanuel Ltd | Other services | 2018 |
| Hanna Thomas Uose Limited | Information & communication | 2021 |
| Hannah Alexander Limited | Extraterritorial | 2013 |
| Hannah Hancock Photography Ltd | Professional & scientific | 2020 |
| Hannah Macdonald Homes Ltd | Real estate | 2024 |
| Hannahs Cleaning Angels Ltd | Administrative & support | 2020 |
| Hannoon Ltd | Real estate | 2024 |
| Hano D-Lite Limited | Hospitality | 2024 |
| Hanoi 90S Ltd | Hospitality | 2025 |
| Hanover Square Developments Limited | Hospitality | 2011 |
| Hanq Investments Limited | Real estate | 2009 |
| Hansa Holdco Limited | Financial services | 2017 |
| Hansh Ltd | Hospitality | 2026 |
| Hanson Steel Detailing Ltd | Construction | 2019 |
| Hanstal Consulting Limited | Real estate | 2018 |
| Hanu Ltd | Professional & scientific | 2024 |
| Hanuman Lounge Ltd | Hospitality | 2017 |
| Hanvil Limited | Professional & scientific | 2022 |
| Hanwell Atkinson Limited | Financial services | 2002 |
| Hanwolfe Ltd | Information & communication | 2015 |
| HAO Meiway Limited | Hospitality | 2023 |
| HAP Enterprise Limited | Real estate | 2024 |
| HAP Group Ltd | Real estate | 2023 |
| Happiness Clinic CIC | Health & social care | 2023 |
| Happy Bunny Software Limited | Information & communication | 2024 |
| Happy Cakers Ltd | Information & communication | 2024 |
| Happy Chopsticks Ltd | Hospitality | 2026 |
| Happy Days Local Ltd | Wholesale & retail | 2024 |
| Happy Eater Catering & Events Ltd | Hospitality | 2023 |
| Happy Force Ltd | Information & communication | 2024 |
| Happy Hearts and Minds CIC | Health & social care | 2023 |