| HS1 Services Ltd | Construction | 2021 |
| HSA XL Trans Ltd | Transport & logistics | 2022 |
| HSB Haulage Contractors Ltd | Transport & logistics | 2020 |
| Hsbmedical Limited | Health & social care | 2022 |
| HSC GAS Services Ltd | Construction | 2024 |
| HSG Holdings Limited | Professional & scientific | 1979 |
| Hsg-Skg Holdings Limited | Real estate | 2024 |
| HSK Group Limited | Financial services | 2016 |
| HSM Commerce Ltd | Wholesale & retail | 2025 |
| HSM Legionella Services Ltd | Water & waste | 2021 |
| HSM1 Ltd | Wholesale & retail | 2025 |
| HSN Homes Ltd | Real estate | 2018 |
| HSP Construction Services Ltd | Construction | 2026 |
| HSU Electrical Services Ltd | Construction | 2024 |
| HSU Fire Alarm Services Ltd | Public administration | 2025 |
| HT Home Lifts Ltd | Other services | 2023 |
| HT Urgent and Primary Ltd | Health & social care | 2026 |
| HTR Property Ltd | Real estate | 2019 |
| HU Training Ltd | Administrative & support | 2026 |
| Hudson Retail Group Ltd | Wholesale & retail | 2020 |
| Hudson Sewell Design Limited | Wholesale & retail | 2013 |
| Hudsons Recycling Centre Ltd | Water & waste | 2017 |
| Hughes Flooring Gloucestershire Limited | Construction | 2020 |
| Hugos Pet Supplies Limited | Wholesale & retail | 2010 |
| Hulk Vapes Limited | Wholesale & retail | 2021 |
| Hulse Holdings Ltd | Real estate | 2018 |
| Hummingbird Confectionery Ltd | Wholesale & retail | 2005 |
| Humphris Leisure Limited | Real estate | 2013 |
| Hundo Ltd | Information & communication | 2020 |
| Hundreds & Thousands Design Limited | Professional & scientific | 2019 |
| Hunta Productions Ltd | Administrative & support | 2022 |
| Hunter Group UKA Ltd | Hospitality | 2022 |
| Huntley & Palmers Limited | Wholesale & retail | 2001 |
| Hussain Haider Limited | Wholesale & retail | 2026 |
| Hussan Sweet Centre Ltd | Wholesale & retail | 2026 |
| Hustans Limited | Wholesale & retail | 2018 |
| HV Power Commissioning & Testing Ltd | Manufacturing | 2022 |
| Hvac Services Group Limited | Construction | 2018 |
| HW Driving Ltd | Education | 2026 |
| HWJ Global Consulting Ltd | Professional & scientific | 2023 |
| HWJ Online Ecoms Ltd | Wholesale & retail | 2022 |
| HWJ Real Estates Ltd | Real estate | 2021 |
| Hwjaffiliate Ltd | Professional & scientific | 2026 |
| Hy-Tops Limited | Manufacturing | 1977 |
| Hydraserve Midland Services Ltd | Construction | 2021 |
| Hydriades IV Limited | Professional & scientific | 2007 |
| Hydriades Limited | Professional & scientific | 2007 |
| Hydriades V Limited | Professional & scientific | 2007 |
| Hydroe Services Limited | Manufacturing | 2010 |
| Hydrosave UK Limited | Professional & scientific | 1997 |
| Hygeia Healthcare Limited | Health & social care | 2018 |
| HYGH5 Ltd | Professional & scientific | 2017 |
| HYH Healthcare Limited | Health & social care | 2025 |
| Hypatia Limited | Information & communication | 1997 |
| Hyper Systems Ltd | Information & communication | 2019 |
| Hypnotic Clothing Limited | Wholesale & retail | 2022 |
| HZ Motors Ltd | Wholesale & retail | 2025 |
| I & I Motors Ltd | Wholesale & retail | 2024 |
| I & J Sons Transport Ltd | Transport & logistics | 2012 |
| I & R Limited | Information & communication | 2010 |
| I - Motioncaddys Limited | Wholesale & retail | 2011 |
| I AM Diamond Property Sourcing Limited | Health & social care | 2020 |
| I Bathrooms & Tiles Ltd | Other services | 2017 |
| I G C Plastering Ltd | Construction | 2008 |
| I K G Midlands Limited | Professional & scientific | 2013 |
| I Lona Education Ltd | Professional & scientific | 2022 |
| I Love Cleaning Limited | Administrative & support | 2011 |
| I Love Homes Limited | Real estate | 2014 |
| I R Company (Midlands) Limited | Real estate | 2022 |
| I&A Ventilation Limited | Other services | 2018 |
| I&D Autos Limited | Wholesale & retail | 2015 |
| I&L Solutions Ltd | Information & communication | 2022 |
| I&S Global Ltd | Other services | 2022 |
| I&S Homes Limited | Information & communication | 2024 |
| I-Dispense Limited | Wholesale & retail | 2011 |
| I-Dispense Plus Limited | Wholesale & retail | 2026 |
| I.A.M. Consultancy Ltd | Professional & scientific | 2014 |
| I.D.A Electrical Limited | Construction | 2026 |
| I.H. Maintenance & Repair Limited | Construction | 2000 |
| I.J.S. Roofing & Building Limited | Construction | 2003 |
| I.K. Dyall Limited | Real estate | 2023 |
| I.Lona Homes Ltd | Real estate | 2019 |
| IA Motors Limited | Wholesale & retail | 2017 |
| IA Play Limited | Construction | 2024 |
| IA Play Solution Ltd | Construction | 2020 |
| IA Travel Ltd | Transport & logistics | 2023 |
| Iaesthetics West Brom Ltd | Other services | 2023 |
| IAN Henery Solicitors Limited | Professional & scientific | 2009 |
| IAO Trading Limited | Information & communication | 1991 |
| IB Homes Ltd | Real estate | 2021 |
| Ibby Barbers Shop Ltd | Other services | 2024 |
| IBC Products Limited | Manufacturing | 2022 |
| IBC1 Ltd | Construction | 2025 |
| Iberoasia Ltd | Professional & scientific | 2020 |
| Ibex Logistics Ltd | Transport & logistics | 2026 |
| Ibironky Limited | Health & social care | 2024 |
| IBL Logistics Ltd | Transport & logistics | 2013 |
| Ibliss Limited | Professional & scientific | 2025 |
| IBN E Yousaf Ltd | Wholesale & retail | 2026 |
| IBS Support Ltd | Health & social care | 2012 |