| HUMBLE1 Ltd | Real estate | 2017 |
| Humphrey Smith Limited | Administrative & support | 2017 |
| Humphreys Property Group Ltd | Real estate | 2026 |
| Humulus Heights Ltd | Hospitality | 2025 |
| Hundal Haulage Limited | Transport & logistics | 2015 |
| Hunt & Co Holdings Ltd | Real estate | 2024 |
| Hunt Logistics Limited | Professional & scientific | 2019 |
| Hunt Residential Lettings Limited | Real estate | 2025 |
| Hunter Consultancy Limited | Professional & scientific | 2005 |
| Huntland Estates Ltd | Real estate | 2025 |
| Huntsman's Quarries Limited | Extraterritorial | 1936 |
| Hurly Burly Nurseries Ltd | Education | 2012 |
| Hurworth Hall Farm Management Company Limited | Households | 2019 |
| Hussain & BRO Ltd | Hospitality | 2025 |
| Hussain Haulage Limited | Construction | 2024 |
| Hussain Manor Holdings Ltd | Real estate | 2025 |
| Hussain Rail Services Ltd | Professional & scientific | 2026 |
| Hussard Enterprises Limited | Construction | 2013 |
| Hustlr Apparel Limited | Extraterritorial | 2021 |
| Hutchinson West Limited | Wholesale & retail | 2020 |
| Huub Holdings Limited | Financial services | 2019 |
| Huub Limited | Manufacturing | 2011 |
| Huxton College Ltd | Education | 2023 |
| HW Craft Beer Limited | Wholesale & retail | 2023 |
| HWA Leisure Ltd | Arts & recreation | 2025 |
| HWB2 Ltd | Construction | 2019 |
| HWD UK Ltd | Professional & scientific | 2025 |
| Hyaluronic Limited | Real estate | 2025 |
| Hybrid Professional Solutions Limited | Information & communication | 2016 |
| Hybrid Quantum Design Ltd | Manufacturing | 2025 |
| Hydewood Holdings Ltd | Financial services | 2026 |
| Hydra-Valve World-Wide Limited | Manufacturing | 2011 |
| Hydraseeders (Southern) Limited | Extraterritorial | 1969 |
| Hydraseeders Limited | Administrative & support | 1968 |
| Hygea Care Group Ltd | Health & social care | 2021 |
| Hygge Spaces Ltd | Real estate | 2019 |
| Hygge Supplies Ltd | Wholesale & retail | 2021 |
| Hygienex (Holdings) Ltd | Financial services | 2020 |
| Hygienex Ltd | Wholesale & retail | 2007 |
| Hyperion College Ltd | Education | 2024 |
| Hyperion Games (UK) Ltd | Information & communication | 2013 |
| Hypermarket Consortia Ltd | Wholesale & retail | 2026 |
| Hyphen Property Limited | Real estate | 2024 |
| Hypuljet UK Limited | Professional & scientific | 2017 |
| Hywra Limited | Wholesale & retail | 2017 |
| HZM Limited | Construction | 2026 |
| Hzyz Ltd | Real estate | 2026 |
| Hübner UK Limited | Manufacturing | 2017 |
| I & a (UK) Limited | Wholesale & retail | 2010 |
| I & C Allen T/A Cannon's Limited | Transport & logistics | 2011 |
| I & P Services (UK) Limited | Professional & scientific | 2013 |
| I a Trading Derby Limited | Wholesale & retail | 2025 |
| I C Health & Safety Ltd | Professional & scientific | 2003 |
| I Consult London Ltd | Real estate | 2023 |
| I D P Technical Solutions Limited | Professional & scientific | 2008 |
| I Find Leaks Limited | Construction | 2022 |
| I H Catering (Derby) Ltd | Hospitality | 2015 |
| I J Law Limited | Professional & scientific | 2024 |
| I J S Electrical Contractors Limited | Construction | 2001 |
| I K Property Solutions Ltd | Construction | 2014 |
| I Love My JOB Limited | Administrative & support | 2010 |
| I M Denton Limited | Financial services | 2009 |
| I M Jewellers Ltd | Wholesale & retail | 2021 |
| I S J Farming Limited | Agriculture & fishing | 2006 |
| I S Pataki Services Limited | Construction | 2025 |
| I Said YES Bridal Ltd | Wholesale & retail | 2020 |
| I Solve Problems Ltd | Information & communication | 2019 |
| I T H Derby Ltd | Hospitality | 2019 |
| I Understand Education Ltd | Education | 2024 |
| I Will Know Someone Ltd | Professional & scientific | 2012 |
| I&B Trans Ltd | Transport & logistics | 2017 |
| I&M Rental Properties Limited | Real estate | 2020 |
| I-Net Communications (UK) Limited | Information & communication | 2012 |
| I-Projects (Nottingham) Limited | Real estate | 2010 |
| I. Bailey Steel Buildings Limited | Construction | 2016 |
| I. Wilkinson & SON Limited | Manufacturing | 1930 |
| I.Iqbal Limited | Administrative & support | 2024 |
| I.Lacs Design Ltd | Professional & scientific | 2026 |
| I.S.N Holdings Ltd | Financial services | 2021 |
| I2I Services Limited | Information & communication | 1990 |
| I5 Consultancy Limited | Professional & scientific | 2025 |
| I9-RECRUITMENT Limited | Administrative & support | 2025 |
| IA Pizza (Derby) Limited | Hospitality | 2018 |
| IAB Property Management Ltd | Real estate | 2023 |
| Iacere Limited | Professional & scientific | 2010 |
| Iamkweir Photography Ltd | Professional & scientific | 2025 |
| IAN Hulmes Consultancy Ltd | Administrative & support | 2018 |
| IAN Lane Accountancy Services Ltd | Professional & scientific | 2026 |
| IAN Torr Limited | Financial services | 2007 |
| Ianengineeringservices Ltd | Professional & scientific | 2024 |
| IB Auto Accessory's Ltd | Wholesale & retail | 2024 |
| Ibam Property Solutions Ltd | Real estate | 2020 |
| Ibbotsons Estates Ltd | Real estate | 2021 |
| Ibbotsons Holdings Ltd | Real estate | 2023 |
| Ibex PR Ltd | Extraterritorial | 2020 |
| Iblaze Derby Limited | Wholesale & retail | 2022 |
| Ibneali Traders Ltd | Wholesale & retail | 2024 |
| Ibrahim Assets Limited | Real estate | 2026 |
| Ibrahim N Limited | Hospitality | 2024 |
| Ibuki Data Limited | Information & communication | 2021 |