| HUM Enterprise Limited | Wholesale & retail | 2024 |
| Humaira Health Practice Ltd | Health & social care | 2022 |
| Human Tools Limited | Wholesale & retail | 2017 |
| Humannaturelabs Ltd | Information & communication | 2026 |
| Humes Trading Ltd | Wholesale & retail | 2025 |
| Hummingbaird AI Ltd | Information & communication | 2025 |
| Humphreys Group Ltd | Real estate | 2025 |
| Hunch Studio Ltd | Education | 2022 |
| Hunt & Marsden (Bolton) Limited | Wholesale & retail | 1973 |
| Hunt Homes Limited | Professional & scientific | 2006 |
| Hunters & Gould Limited | Information & communication | 2012 |
| Hunters Security Services Limited | Administrative & support | 2023 |
| Hunters Trading (NW) Ltd | Wholesale & retail | 2024 |
| Huntrix Ltd | Other services | 2023 |
| Hurricane Cloud Solutions Ltd | Information & communication | 2023 |
| Hurricane Hydraulics Ltd | Administrative & support | 2006 |
| Hurst & Byrne Limited | Construction | 2014 |
| Hurstwood Engineering (UK) Limited | Professional & scientific | 2010 |
| Husain Optics Ltd | Health & social care | 2020 |
| Husam Kitchens Ltd | Manufacturing | 2017 |
| Husam Properties Ltd | Construction | 2019 |
| Hushi International LLP | | 2012 |
| Hushi Investments Limited | Financial services | 2018 |
| Hushloom Ltd | Wholesale & retail | 2025 |
| Hushluxeretail Ltd | Wholesale & retail | 2019 |
| Husky Adventures Ltd | Other services | 2021 |
| Husni Properties Limited | Real estate | 2025 |
| Hussain Corp Ltd | Health & social care | 2015 |
| Hussain Industries UK Limited | Administrative & support | 2023 |
| Hussain Optical Limited | Health & social care | 2022 |
| Hutch View Management Company Ltd | Households | 2023 |
| Hutech Robotics Ltd | Wholesale & retail | 2021 |
| Hutton Site Ltd | Construction | 2024 |
| HUW Davies Portfolio Delivery Advisory Ltd | Professional & scientific | 2026 |
| Hvgifts Ltd | Wholesale & retail | 2024 |
| HVS Autos Ltd | Wholesale & retail | 2023 |
| HW Social Care Limited | Health & social care | 2014 |
| HWT Design Ltd | Administrative & support | 2023 |
| HXM Sharp Ltd | Professional & scientific | 2025 |
| Hybrid Car Centre of Bolton Limited | Wholesale & retail | 2017 |
| Hybrid Dynamics Limited | Professional & scientific | 2011 |
| Hybrid Performance Centre Ltd | Education | 2019 |
| Hybrid Performance Energy Limited | Wholesale & retail | 2024 |
| Hybrid Repair Specialist Ltd | Wholesale & retail | 2025 |
| Hybrid Trademarks Limited | Other services | 2024 |
| Hyde Financial Solutions Limited | Financial services | 1999 |
| Hyde LEA Limited | Health & social care | 2025 |
| Hyde Road Motors Ltd | Wholesale & retail | 2011 |
| Hydra IT Limited | Information & communication | 2015 |
| Hydra-Robe Ltd | Wholesale & retail | 2025 |
| Hydraulic Power Ltd | Manufacturing | 2015 |
| Hydrex Solutions Ltd | Administrative & support | 2025 |
| Hyke Nutrition Limited | Health & social care | 2024 |
| Hyland Associates Limited | Real estate | 2003 |
| Hyland Legal Limited | Professional & scientific | 2014 |
| Hyo-Isak Ltd | Wholesale & retail | 2020 |
| Hype Heaven Ltd | Wholesale & retail | 2024 |
| Hyper Merch Limited | Manufacturing | 2023 |
| Hyquip Holdings Limited | Financial services | 2025 |
| Hyquip Limited | Manufacturing | 2001 |
| Hyseni Limited | Hospitality | 2025 |
| Hytip (UK) Limited | Manufacturing | 2011 |
| HZ Finds Ltd | Wholesale & retail | 2025 |
| HZA Services Ltd | Extraterritorial | 2021 |
| Hzdotcommerce Ltd | Wholesale & retail | 2024 |
| HZK Consulting Ltd | Professional & scientific | 2026 |
| HZY Distribution Ltd | Hospitality | 2023 |
| HZY UK Ltd | Hospitality | 2025 |
| I & C Holden Ltd | Manufacturing | 2024 |
| I & C Holden Property Ltd | Real estate | 2024 |
| I & JB Property Limited | Real estate | 2019 |
| I & N Restaurants Ltd | Hospitality | 2025 |
| I & R Solutions Limited | Professional & scientific | 2015 |
| I & Y Property Limited | Real estate | 2019 |
| I AM Being UN Limited | Households | 2019 |
| I and S Properties (NW) Ltd | Real estate | 2024 |
| I B Industries Limited | Wholesale & retail | 2019 |
| I C Bradshawgate Ltd | Real estate | 2017 |
| I Driving School Ltd | Education | 2025 |
| I E Car Care Limited | Wholesale & retail | 2011 |
| I Find Solutions Ltd | Wholesale & retail | 2020 |
| I H B T Ltd | Real estate | 2021 |
| I IMP Ltd | Wholesale & retail | 2022 |
| I J Smalley Plumbing & Heating Ltd | Construction | 2016 |
| I J W Haulage Limited | Transport & logistics | 2003 |
| I Like Big Mutts Ltd | Professional & scientific | 2023 |
| I Like Food Ltd | Hospitality | 2020 |
| I Motor Cars Ltd | Wholesale & retail | 2020 |
| I R Opticals Ltd | Health & social care | 2009 |
| I S Lawyers Ltd | Professional & scientific | 2013 |
| I Security Limited | Professional & scientific | 2011 |
| I Travel and Tours Ltd | Other services | 2019 |
| I W M Designs Limited | Manufacturing | 2002 |
| I Webonline Limited | Information & communication | 2012 |
| I Z Opticals Ltd | Wholesale & retail | 2022 |
| I&A Premium Properties Ltd | Administrative & support | 2026 |
| I&F Trading Limited | Real estate | 2014 |
| I&G Business Consultancy Ltd | Administrative & support | 2023 |
| I&I Retail Ltd | Wholesale & retail | 2024 |
| I&I Sparkle Ltd | Administrative & support | 2024 |