| HIT 5 Training Ltd | Arts & recreation | 2018 |
| HIT Properties Limited | Financial services | 2010 |
| Hitched and Pitched Ltd | Administrative & support | 2025 |
| Hitchen & Co Ltd | Wholesale & retail | 2005 |
| Hitchen Consulting Limited | Information & communication | 2025 |
| Hitchenor Wakeford Interim Limited | Administrative & support | 2006 |
| Hitchenor Wakeford Limited | Administrative & support | 2005 |
| Hitchholmes Ltd | Hospitality | 2025 |
| Hitech Creative Solutions Ltd | Information & communication | 2018 |
| Hitech Fence Ltd | Manufacturing | 2017 |
| Hitechlabs Ltd | Wholesale & retail | 2020 |
| Hiteph Limited | Real estate | 2016 |
| Hitha Limited | Financial services | 2008 |
| Hitman Sportswear Ltd | Wholesale & retail | 2018 |
| Hitz (New Rover) Limited | Arts & recreation | 2025 |
| Hive Living LLP | | 2007 |
| Hive Places Limited | Construction | 2010 |
| Hivebeat Limited | Manufacturing | 2023 |
| Hivemtd Limited | Information & communication | 2025 |
| Hiwar Properties Ltd | Real estate | 2026 |
| Hizzy Properties Limited | Real estate | 2018 |
| HJ Home Projects Ltd | Households | 2025 |
| HJ Real Estate Limited | Real estate | 2020 |
| Hjer Limited | Wholesale & retail | 2025 |
| HJF Electrical Limited | Construction | 2021 |
| HJI Electrical Services Ltd | Construction | 2024 |
| HJJ Investments Limited | Real estate | 2023 |
| Hjlt Care Limited | Health & social care | 2017 |
| HJM Building Services Limited | Construction | 2023 |
| HJS Law | Administrative & support | 2010 |
| HK & BC Hair Limited | Other services | 2024 |
| HK Business Solutions Ltd | Information & communication | 2025 |
| HK Cuts Ltd | Other services | 2024 |
| HK Legal Limited | Professional & scientific | 2024 |
| HK Media Ltd | Professional & scientific | 2023 |
| HK Property Leeds Ltd | Households | 2022 |
| HK Restaurant Group Limited | Hospitality | 2024 |
| HK Sports Limited | Arts & recreation | 2020 |
| HK Windows Limited | Construction | 2022 |
| HKB Associates Ltd | Administrative & support | 2015 |
| HKGATE304 Ltd | Wholesale & retail | 2026 |
| HKJ Medical Ltd | Health & social care | 2022 |
| HKM Properties Ltd | Real estate | 2017 |
| HKR Consultants Ltd | Professional & scientific | 2023 |
| HKR Solutions Ltd | Professional & scientific | 2025 |
| Hkwe Consultancy Limited | Professional & scientific | 2017 |
| Hkwh Limited | Professional & scientific | 2023 |
| HLA (71) Group Ltd | Financial services | 2025 |
| HLA Books Ltd | Professional & scientific | 2025 |
| HLA Investments Ltd | Real estate | 2021 |
| HLA Tax Solutions Ltd | Professional & scientific | 2025 |
| HLB Taylor Properties Limited | Households | 2022 |
| HLD Medicare Limited | Health & social care | 2025 |
| HLH Digital Marketing Ltd | Other services | 2025 |
| HLH Rapid Limited | Manufacturing | 2020 |
| Hlhl Hair Ltd | Other services | 2024 |
| HLN Properties Limited | Professional & scientific | 1997 |
| Hlwkh 591 Limited | Professional & scientific | 2015 |
| HM Carcoal Ltd | Hospitality | 2023 |
| HM Cars Leeds Ltd | Wholesale & retail | 2026 |
| HM Cove Ltd | Real estate | 2021 |
| HM Design Services Ltd | Manufacturing | 2023 |
| HM Diner Limited | Hospitality | 2017 |
| HM Good Practice Ltd | Health & social care | 2025 |
| HM Music Ltd | Arts & recreation | 2019 |
| HM Properties Holdings Limited | Real estate | 2026 |
| HM Quality & Inspection Consultants Ltd | Professional & scientific | 2011 |
| HM Wilson Property Ltd | Real estate | 2024 |
| HM Wimbledon Properties Limited | Real estate | 2023 |
| HMC Security Solutions Limited | Construction | 2022 |
| Hmdpublishing Limited | Wholesale & retail | 2021 |
| HME Automobiles Ltd | Wholesale & retail | 2024 |
| HME Products Ltd | Wholesale & retail | 2026 |
| HMG Motor Group Ltd | Wholesale & retail | 2026 |
| Hmga Limited | Wholesale & retail | 2024 |
| HMI Digital Ltd | Wholesale & retail | 2025 |
| HMI Elements Holdings Ltd | Manufacturing | 2009 |
| HMI Elements Limited | Manufacturing | 1998 |
| Hmj's Organic Ltd | Wholesale & retail | 2025 |
| HMK Developments Limited | Construction | 2020 |
| HMK Group Limited | Financial services | 2020 |
| HMK Properties Limited | Real estate | 2020 |
| HMN24 Limited | Other services | 2010 |
| Hmorheums Limited | Health & social care | 2019 |
| HMS Electrical (Leeds) Ltd | Construction | 2025 |
| HMS Inns Ltd | Hospitality | 2023 |
| HMS Spirits Company Limited | Manufacturing | 2016 |
| HMT Medical Services Ltd | Health & social care | 2024 |
| HMU Capital Ltd | Real estate | 2025 |
| HMW Turf Supplies & Contractors Limited | Administrative & support | 2003 |
| HN Global Exports (HK) Ltd | Wholesale & retail | 2023 |
| HN Investments 2 Limited | Professional & scientific | 2020 |
| HN Leeds Properties Limited | Real estate | 2024 |
| HN Pharma Ltd | Health & social care | 2019 |
| HN Ranges Ltd | Manufacturing | 2026 |
| HN Ventures Leeds Ltd | Real estate | 2025 |
| HNA Investments Limited | Real estate | 2020 |
| HNA Property Investments Limited | Real estate | 2023 |
| Hncn Limited | Wholesale & retail | 2022 |
| HND Digital Limited | Information & communication | 2015 |