| Hussain Food Store Ltd | Wholesale & retail | 2025 |
| Hussain Immigration Law Limited | Professional & scientific | 2010 |
| Hussain Property Limited | Real estate | 2015 |
| Hussain Rehar UK Limited | Wholesale & retail | 2026 |
| Hussain Transport Ltd | Transport & logistics | 2022 |
| Hussaini Eyecare Ltd | Wholesale & retail | 2026 |
| Hussains Hardware Ltd | Wholesale & retail | 2026 |
| Hussains Installations Ltd | Construction | 2025 |
| Hussainwindowrepairs Ltd | Construction | 2025 |
| Hussakingham Ltd | Public administration | 2023 |
| Hussene Limited | Transport & logistics | 2021 |
| Hustle DFX Ltd | Administrative & support | 2023 |
| Hustwit Holdings Limited | Financial services | 2023 |
| Huufe Limited | Information & communication | 2017 |
| Huzaifah Travels Ltd | Transport & logistics | 2024 |
| Hvdemicon Ltd | Construction | 2021 |
| HW Logistics Yorkshire Ltd | Wholesale & retail | 2024 |
| Hwaidy Ltd | Wholesale & retail | 2021 |
| Hwdw & Sons Ltd | Professional & scientific | 2021 |
| HWL Property Management Limited | Real estate | 2024 |
| HXA Automotive Ltd | Wholesale & retail | 2025 |
| HY Desserts Limited | Hospitality | 2024 |
| Hyacinth Healthcare Ltd | Health & social care | 2021 |
| Hyblonia Ltd | Administrative & support | 2018 |
| Hybrid Clothing Limited | Manufacturing | 2025 |
| Hybrid Competition's Ltd | Administrative & support | 2023 |
| Hybrid FIX Ltd. | Wholesale & retail | 2012 |
| Hybrid Hiring Ltd | Administrative & support | 2021 |
| Hybrid Hub Ltd | Administrative & support | 2021 |
| Hybrid Parts Ltd | Wholesale & retail | 2026 |
| Hybrid Spares Limited | Wholesale & retail | 2023 |
| Hybrid Specialists Bradford Limited | Wholesale & retail | 2026 |
| Hyder Commercial Ltd | Real estate | 2018 |
| Hyder Leisure Ltd | Real estate | 2021 |
| Hydra Car Spa Limited | Administrative & support | 2025 |
| Hydrade Drinks Limited | Wholesale & retail | 2021 |
| Hydro Roto MAX UK Limited | Construction | 2020 |
| Hydro Wash Limited | Manufacturing | 2003 |
| Hydrocarbon Services GB Ltd | Extraterritorial | 2020 |
| Hydrotech Maintenance Ltd | Extraterritorial | 2019 |
| Hyek Cleaning Service Ltd | Extraterritorial | 2025 |
| Hygienic Cladding Outlet Limited | Wholesale & retail | 2026 |
| Hygrotherm Engineering Limited | Administrative & support | 1948 |
| Hype Harvest Ltd | Wholesale & retail | 2025 |
| Hyper Attractions Ltd | Arts & recreation | 2026 |
| Hypercart Ltd | Wholesale & retail | 2026 |
| Hypnodriving UK Ltd | Education | 2022 |
| Hypnotic Impact Ltd | Health & social care | 2022 |
| Hypo PL8TZ Ltd | Wholesale & retail | 2025 |
| Hypo Plates Ltd | Wholesale & retail | 2022 |
| Hyrraa Limited | Administrative & support | 2025 |
| Hysen Assets Ltd | Real estate | 2025 |
| HZ Enterprises Ltd | Wholesale & retail | 2019 |
| Hz.Essentials Ltd | Wholesale & retail | 2022 |
| Hzheng 168 Ltd | Hospitality | 2017 |
| HZS Property Holdings Ltd | Real estate | 2015 |
| I & M Homes and Away Ltd | Real estate | 2020 |
| I & M Rockshop Ltd | Hospitality | 2026 |
| I & S Accountants Ltd | Professional & scientific | 2019 |
| I & T Communications Limited | Wholesale & retail | 2020 |
| I a Developments Limited | Real estate | 2025 |
| I a G Developments Limited | Construction | 2004 |
| I a Locum Ltd | Professional & scientific | 2009 |
| I AM Ajuk Ltd | Wholesale & retail | 2024 |
| I AM Droid Ltd | Wholesale & retail | 2019 |
| I AM IT Geek Ltd | Information & communication | 2024 |
| I AM Possible Education Ltd | Education | 2023 |
| I Bhatti & Son's Ltd | Other services | 2021 |
| I Con-Struct Developments Ltd | Construction | 2016 |
| I Con-Struct Properties Ltd | Construction | 2021 |
| I Favour Ltd | Information & communication | 2010 |
| I Feodor Couriers Ltd | Transport & logistics | 2024 |
| I G Joinery Ltd | Construction | 2026 |
| I H Textiles Limited | Wholesale & retail | 2022 |
| I Haider Construction Ltd | Construction | 2026 |
| I Hate Lawyers.Com Limited | Professional & scientific | 2011 |
| I Inspire Aftercare Limited | Health & social care | 2011 |
| I K Associates (UK) Limited | Financial services | 2006 |
| I K Collections Limited | Manufacturing | 2016 |
| I K Parts Limited | Wholesale & retail | 2023 |
| I Kanwal Consultancy Ltd | Real estate | 2015 |
| I Khan Foods Limited | Financial services | 2026 |
| I Love AA Ltd | Wholesale & retail | 2026 |
| I M Homes Limited | Real estate | 2012 |
| I Mehrban Optical Ltd | Health & social care | 2023 |
| I Prescribe Limited | Health & social care | 2025 |
| I T Dreaming Ltd | Education | 2016 |
| I Wear Opticians (North) Limited | Health & social care | 2012 |
| I Z Trading & Investments Ltd | Real estate | 2013 |
| I Zafar Holdings Limited | Financial services | 2025 |
| I&A Investmentz Ltd | Real estate | 2025 |
| I&C London Ltd | Wholesale & retail | 2018 |
| I&I Premium Logistics Limited | Transport & logistics | 2026 |
| I&R Express Ltd | Transport & logistics | 2017 |
| I&S Market Ltd | Wholesale & retail | 2021 |
| I-Care Delivery Ltd | Health & social care | 2025 |
| I-Clean Support Services Ltd. | Administrative & support | 2021 |
| I-Deduce Limited | Other services | 2016 |
| I-Five Ltd | Health & social care | 2014 |
| I-Gaze Ltd | Health & social care | 2023 |