| Hrlf Consulting Ltd | Professional & scientific | 2023 |
| HRM International Limited | Wholesale & retail | 2017 |
| HRM Manchester Limited | Real estate | 2020 |
| HRN Logistics Ltd | Transport & logistics | 2026 |
| HRN Services Ltd | Health & social care | 2017 |
| HS Trade and Rescue Ltd | Wholesale & retail | 2025 |
| HSP Developments Limited | Construction | 2025 |
| HSP Distribution Ltd | Wholesale & retail | 2021 |
| HSP Investments Limited | Real estate | 2025 |
| HSP Trading International Ltd | Wholesale & retail | 2019 |
| HSQ International Consultants Ltd | Professional & scientific | 2022 |
| HSQ Project 1 Ltd | Professional & scientific | 2023 |
| Hsran Consulting Limited | Professional & scientific | 2018 |
| HTM Data Assets Limited | Information & communication | 2021 |
| HTT Properties Ltd | Real estate | 2023 |
| HU Holdings Limited | Professional & scientific | 2024 |
| Hubstone Capital LP | | 2016 |
| Hudson Bailey Ltd | Wholesale & retail | 2025 |
| Hudson Cleaning Services Limited | Administrative & support | 2017 |
| Hudson Waste Management Limited | Water & waste | 2025 |
| Huge Communications Limited | Professional & scientific | 2020 |
| Hugh Roke Logistics Ltd | Transport & logistics | 2025 |
| Hulme Hall Management Company Limited | Real estate | 2014 |
| Hulton Care Limited | Health & social care | 2021 |
| Hultons Limited | Real estate | 2009 |
| Hultons Merchant Limited | Wholesale & retail | 2024 |
| Human Relief International | Professional & scientific | 2023 |
| Humancare International Fondation | Health & social care | 2020 |
| Hung Limited | Administrative & support | 2008 |
| Hunters Carpets and Flooring Limited | Construction | 2021 |
| Hunters Financial Ltd | Financial services | 2019 |
| Hunters Lodge Property Management Ltd | Real estate | 2025 |
| Hunters Moon Wilmslow Limited | Real estate | 2022 |
| Hurlstones (Midlands & South ) Limited | Professional & scientific | 2008 |
| Hurlstones Northern Limited | Professional & scientific | 2008 |
| Hurwebbs Dangerous Goods Limited | Transport & logistics | 2019 |
| Hush (NW) Limited | Wholesale & retail | 2022 |
| Hussnain Anwar Ltd | Wholesale & retail | 2022 |
| Huthuis Limited | Wholesale & retail | 2020 |
| Huzz Trading Limited | Financial services | 2025 |
| HW Investment Group Ltd | Real estate | 2024 |
| HW Solutions Limited | Construction | 2006 |
| HWL Limited | Extraterritorial | 1981 |
| Hydrogencorp Ltd | Information & communication | 2020 |
| Hydropak Limited | Wholesale & retail | 2017 |
| Hydrovision Inspection Services Limited | Professional & scientific | 2025 |
| Hygienic Clean Limited | Real estate | 2020 |
| Hyperprint Services Employment Ltd | Administrative & support | 2024 |
| Hyperprint Services Ltd | Manufacturing | 2024 |
| I & R SPV Ltd | Real estate | 2024 |
| I AM Pizza Limited | Hospitality | 2018 |
| I G Mostyn Ltd | Professional & scientific | 2018 |
| I G S Property Management Limited | Energy | 1995 |
| I J Plastic Industries UK Ltd | Administrative & support | 2023 |
| I Law Construction Limited | Construction | 2024 |
| I S GAS Services Limited | Administrative & support | 2009 |
| I'M OFF Ltd | Information & communication | 2013 |
| I-F Developments Limited | Real estate | 2020 |
| I-Link Solutions UK Ltd | Information & communication | 2014 |
| I.C.C.S. Limited | Information & communication | 1993 |
| I.H Joinery & Carpentry Ltd | Construction | 2016 |
| I.M. Installations Limited | Wholesale & retail | 2001 |
| Iamoli Ltd | Information & communication | 2024 |
| IAN Waite Frca Limited | Health & social care | 2019 |
| Ibersol Limited | Real estate | 2002 |
| Ibex Traders Ltd | Wholesale & retail | 2024 |
| Iblt Ltd | Professional & scientific | 2025 |
| Ice Box Trading Limited | Hospitality | 2012 |
| Ice Cream Living Ltd | Wholesale & retail | 2018 |
| Iceberg Pouches UK Ltd | Wholesale & retail | 2025 |
| Ichortoes Ltd | Wholesale & retail | 2019 |
| Iconic Pure Water Limited | Water & waste | 2019 |
| Iconiccomics Limited | Wholesale & retail | 2026 |
| Icons International Ltd | Hospitality | 2023 |
| ICT Geeks Ltd | Information & communication | 2026 |
| Idaz Properties Ltd | Real estate | 2024 |
| IFA (North) LLP | | 2008 |
| IFA (North-Leeds) Ltd | Financial services | 2013 |
| IFA Private Clients Limited | Financial services | 2010 |
| Ifeco Enterprises Limited | Hospitality | 2026 |
| IFG Services Ltd | Financial services | 2022 |
| Ifixtech 5G Ltd | Wholesale & retail | 2021 |
| Ignite Trade Ltd | Manufacturing | 2025 |
| Iholo Ltd | Other services | 2026 |
| IIC Education Ltd | Education | 2016 |
| Iiizon Ltd | Wholesale & retail | 2025 |
| Ijeh Limited | Health & social care | 2024 |
| IJF Property Consultants Ltd | Professional & scientific | 2013 |
| IJF Property Investments Ltd | Real estate | 2017 |
| IJK Engineering Limited | Administrative & support | 2009 |
| IJM Electrical Contractors Limited | Construction | 2015 |
| IJN Solicitors Limited | Professional & scientific | 2018 |
| IK Food Ltd | Hospitality | 2024 |
| IL Castello Ltd | Hospitality | 2018 |
| Ilahi Consultancy Ltd | Professional & scientific | 2020 |
| Ilfec Ltd | Professional & scientific | 2021 |
| Illuminos LLP | | 2018 |
| Illustrate Limited | Information & communication | 2015 |
| ILS Electrical Limited | Construction | 2015 |
| IM Beauty Ltd | Wholesale & retail | 2023 |