| HAR NOF Estates Limited | Real estate | 2021 |
| Harab Limited | Wholesale & retail | 2019 |
| Harajuku Holdings Ltd | Financial services | 2026 |
| Harald Buchfink Ltd | Health & social care | 2025 |
| Haram Limited | Health & social care | 2016 |
| Haramain Enterprise Ltd | Wholesale & retail | 2018 |
| Haramain Pilgrim Travel Ltd | Administrative & support | 2026 |
| Harb Capital Ltd | Health & social care | 2023 |
| Harber Investments | Financial services | 2012 |
| Harbor Commercial Ltd | Real estate | 2019 |
| Harbor Consulting Limited | Real estate | 2019 |
| Harbor Crest Investment Firm Ltd | Extraterritorial | 2026 |
| Harbor Frameline Ltd | Information & communication | 2025 |
| Harbor Homes Ltd | Administrative & support | 2016 |
| Harborne Road Nominees Limited | Administrative & support | 1992 |
| Harborview Media Ltd | Extraterritorial | 2025 |
| Harbour & Hearth Limited | Health & social care | 2025 |
| Harbour Bridging Ltd | Financial services | 2025 |
| Harbour Commerce Ltd | Wholesale & retail | 2025 |
| Harbour END Limited | Administrative & support | 2023 |
| Harbour International Freight Limited | Transport & logistics | 1994 |
| Harbour of Hope Group Ltd | Real estate | 2025 |
| Harbour View (NW) Limited | Hospitality | 2021 |
| Hard Body & Co Clothing Ltd | Wholesale & retail | 2017 |
| Hard Work Pays OFF Ltd | Education | 2018 |
| Hardayexclusive Ltd | Administrative & support | 2025 |
| Hardbert Limited | Real estate | 2012 |
| Hardbert Property Management Ltd | Real estate | 2021 |
| Hardbrick Properties Ltd | Real estate | 2017 |
| Hardcastle Construction Ltd | Construction | 2025 |
| Hardcastle Swimby Limited | Wholesale & retail | 2022 |
| Hardcore Estates Limited | Professional & scientific | 2006 |
| Hardee Transport Ltd | Transport & logistics | 2020 |
| Hardgate Software Limited | Information & communication | 2018 |
| Harding & Cullen Limited | Professional & scientific | 2026 |
| Hardman Avenue Ltd | Professional & scientific | 2024 |
| Hardman Street (Manchester) Limited | Hospitality | 2021 |
| Hardpark Ltd | Real estate | 2019 |
| Hardware Base T/A Big Fish Printers Limited | Wholesale & retail | 2017 |
| Hardware Xpress Hub Ltd | Construction | 2023 |
| Hardwareready Ltd | Wholesale & retail | 2024 |
| Hardway ENT Ltd | Manufacturing | 2022 |
| Hardway Studios C.I.C. | Information & communication | 2023 |
| Hardweld UK Ltd | Manufacturing | 2021 |
| Hardwick Homes Ltd | Administrative & support | 2014 |
| Hardwick Properties (North East) Ltd | Real estate | 2017 |
| Hardwick White Properties Ltd. | Real estate | 2018 |
| Hardwood & Vinyl Flooring Ltd | Construction | 2026 |
| Hardwood Dimensions (Holdings) Limited | Wholesale & retail | 1960 |
| Hardwood Dimensions Limited | Wholesale & retail | 1947 |
| Hardys Manchester Limited | Construction | 2026 |
| Hare & Hounds (M24JLS) Limited | Hospitality | 2024 |
| Hare and Hounds Hotel Limited | Hospitality | 2015 |
| Hareem Associates Limited | Professional & scientific | 2012 |
| Haregu Limited | Real estate | 2026 |
| Hareland Property Ltd | Real estate | 2005 |
| Harena Limited | Wholesale & retail | 2023 |
| Harenfort Ltd | Wholesale & retail | 2026 |
| Harewood Associates Limited | Real estate | 2010 |
| Harewood Construction Ltd | Construction | 2026 |
| Harewood Venture Capital Ltd | Real estate | 2012 |
| Hargate Point Commercial Ltd | Real estate | 2025 |
| Hargate Point Ltd | Real estate | 2020 |
| Hargill Properties Limited | Real estate | 2025 |
| Hargreaves Bespoke Carpentry Ltd | Construction | 2021 |
| Hargreaves Gilman Solicitors Limited | Professional & scientific | 2010 |
| Hargreaves Hamilton Land and Properties Ltd | Real estate | 2021 |
| Hargreaves Properties & Sons Ltd | Real estate | 2019 |
| Hargreaves Quality Foods Limited | Wholesale & retail | 2000 |
| Harh Solutions Ltd | Wholesale & retail | 2026 |
| Harhoura Limited | Wholesale & retail | 2024 |
| Hari & Sav's Ltd | Wholesale & retail | 2012 |
| Hari Accountants Ltd | Professional & scientific | 2024 |
| Hari Krupa Investments Ltd | Real estate | 2020 |
| Hari Sugathan Ltd | Health & social care | 2022 |
| Hari Vidya Limited | Other services | 2021 |
| Haria Clothing Limited | Wholesale & retail | 2017 |
| Haria Consultancy Services Limited | Professional & scientific | 2020 |
| Hariaum Ltd | Financial services | 2025 |
| Haridaf Foods Varieties Ltd | Hospitality | 2026 |
| Harika (Atherton) Limited | Wholesale & retail | 2021 |
| Harir House Ltd | Agriculture & fishing | 2025 |
| Haris Building Solutions Ltd | Wholesale & retail | 2024 |
| Haris Cargo Limited | Transport & logistics | 2024 |
| Haris Chaudhri Ltd | Professional & scientific | 2020 |
| Haris Halal Meat Ltd | Wholesale & retail | 2021 |
| Haris Real Estates Limited | Real estate | 2022 |
| Harisen Ltd | Administrative & support | 2010 |
| Hariseva Ltd | Professional & scientific | 2025 |
| Harisson Limited | Information & communication | 2012 |
| Harja Homes Limited | Real estate | 2020 |
| Harjrah Memorial Ltd | Financial services | 2014 |
| Harke UK Limited Partnership | | 2023 |
| Harke UK Management Limited | Manufacturing | 2021 |
| Harkus Consulting Limited | Professional & scientific | 2023 |
| Harlaco Investments Limited | Information & communication | 2008 |
| Harlasten Ltd | Wholesale & retail | 2026 |
| Harleen Kaur Properties Ltd | Real estate | 2026 |
| Harlem Estates Ltd | Real estate | 2025 |
| Harlequin (Stockport) Limited | Wholesale & retail | 1997 |