| GSA Business Solutions Ltd | Administrative & support | 2024 |
| GSP Retail Limited | Wholesale & retail | 2008 |
| GTS (Accrington) Limited | Hospitality | 2005 |
| GTS Topco Limited | Financial services | 2025 |
| Guardian Health Care PVT Ltd | Health & social care | 2021 |
| Gull Textiles Private Ltd | Wholesale & retail | 2024 |
| GVC Healthcare PVT Ltd | Health & social care | 2019 |
| GWD Electrical Ltd | Construction | 2022 |
| GWH Electrical Services Limited | Construction | 2017 |
| Gymkamel Sport Ltd | Wholesale & retail | 2018 |
| Gymnova (UK) Limited | Manufacturing | 1992 |
| Gyms Property Ltd | Real estate | 2022 |
| Gymxp Ltd | Information & communication | 2026 |
| Gynx Limited | Professional & scientific | 2018 |
| GZ Wholesale Halal Meat Ltd | Wholesale & retail | 2018 |
| H and S Feeds Ltd | Wholesale & retail | 2024 |
| H Box Packaging Supplies Ltd | Manufacturing | 2023 |
| H Mops Limited | | 1973 |
| H&D Chairs Ltd | Manufacturing | 2021 |
| H&H Daily Services Limited | Information & communication | 2023 |
| H&S Local Ltd | Wholesale & retail | 2024 |
| H.Y.A Developments Ltd | Real estate | 2025 |
| H1 Kitchen Ltd | Hospitality | 2025 |
| H1CUTZ Ltd | Other services | 2025 |
| H2HOMES Lettings and Property Services Limited | Real estate | 2014 |
| H6 Ltd | Real estate | 2026 |
| Haat Bazaar Hasi Ltd | Wholesale & retail | 2025 |
| Hall Automotive Limited | Wholesale & retail | 2019 |
| Halo Commercial Protection Ltd | Administrative & support | 2019 |
| Halo Fire and Security Ltd | Construction | 2024 |
| Halo Training Ltd | Education | 2026 |
| Halo Vertical Fitness Ltd | Extraterritorial | 2010 |
| Hamedo & Co Ltd | Wholesale & retail | 2025 |
| Hamza Hussain Convenience Store Limited | Wholesale & retail | 2025 |
| Handmade Kitchens Direct Ltd | Manufacturing | 2019 |
| Hanley Motorsport Services Limited | Other services | 2017 |
| Hannah Z Investments Limited | Professional & scientific | 2014 |
| Hanzs Build Limited | Real estate | 2022 |
| Hardcore Crushing Limited | Construction | 2006 |
| Harding & Hickling Ltd | Real estate | 2024 |
| Hardy Removals Ltd | Transport & logistics | 2021 |
| Hare & Moore Ltd | Administrative & support | 2020 |
| Harlen GAS and Heating Services Ltd | Construction | 2018 |
| Harman Packaging Limited | Manufacturing | 2014 |
| Harper Stephenson Search and Selection Ltd. | Administrative & support | 2010 |
| Harris Advisory Ltd | Administrative & support | 2017 |
| Harrop Automotive Refinishing Ltd | Wholesale & retail | 2019 |
| Harv Housing C.I.C. | Real estate | 2018 |
| Harv Outreach Team | Health & social care | 2008 |
| Hastings Compressor Services Ltd | Manufacturing | 2014 |
| Havenfield Leisure Limited | Hospitality | 2026 |
| Hawa Trading Limited | Real estate | 2021 |
| Hawthorn One Limited | Professional & scientific | 2025 |
| HB Outlet Ltd | Wholesale & retail | 2026 |
| Hbconsultancyuk Limited | Professional & scientific | 2022 |
| He@Lthcare Solutions Limited | Professional & scientific | 2001 |
| Health and Travel Services by Saika Ltd | Health & social care | 2022 |
| Healthtech Growth Consulting Ltd | Information & communication | 2022 |
| Heap Developments Limited | Construction | 2019 |
| Heap Homes Ltd | Real estate | 2023 |
| Heartwell Homecare Ltd | Health & social care | 2024 |
| Heath and Herb Limited | Wholesale & retail | 2011 |
| Heathside Holdings Ltd | Financial services | 2019 |
| Heathside Trading Limited | Wholesale & retail | 2005 |
| Heatmasta Ltd | Wholesale & retail | 2025 |
| Heaton Commodities Ltd | Other services | 2022 |
| Hemos Investments Ltd | Real estate | 2025 |
| Henry Fish & Chips Ltd | Hospitality | 2026 |
| Henry James Cars Ltd | Wholesale & retail | 2018 |
| Henry Street Fish Bar Ltd | Hospitality | 2022 |
| Herbert Watson & Co (Shipping) Limited | Transport & logistics | 1973 |
| Herbert Watson Group Limited | Transport & logistics | 1984 |
| Heterochem (UK) Limited | Wholesale & retail | 2021 |
| Heys Property Limited | Real estate | 2021 |
| HF Change Ltd | Professional & scientific | 2024 |
| HH Consultancy Services Ltd | Professional & scientific | 2025 |
| Hiab Birmingham Ltd | Transport & logistics | 2016 |
| Hiab Hire Manchester Limited | Transport & logistics | 2024 |
| Hiab London Ltd | Transport & logistics | 2016 |
| Hiab Manchester Ltd | Transport & logistics | 2016 |
| Hidagyu International Holdings Limited | Real estate | 2021 |
| High Flying Rigging Ltd | Construction | 2021 |
| High Legal Services Ltd | Professional & scientific | 2022 |
| High Riley Properties Limited | Real estate | 2018 |
| Highfield Technical Services Limited | Professional & scientific | 2001 |
| Highlea Care Limited | Health & social care | 2007 |
| Hiit Rocks Ltd | Arts & recreation | 2025 |
| Hill Street Launderette Ltd | Other services | 2017 |
| Hillman Motors (Europe) Limited | Manufacturing | 2014 |
| Hillman Motors Limited | Manufacturing | 2007 |
| Hills Garage Limited | Wholesale & retail | 2026 |
| Hilltop Assistance Limited | Professional & scientific | 1995 |
| Hillview Stables Limited | Other services | 2019 |
| Hire Safe Northern Ltd | Administrative & support | 2018 |
| Hitchens (Engravers) Limited | Manufacturing | 1983 |
| HL Burnley Limited | Real estate | 2025 |
| HML Commercial Property Ltd | Real estate | 2012 |
| HML Investment Holdings Limited | Administrative & support | 2011 |
| HML Recycling 2025 EOT Limited | Professional & scientific | 2025 |
| HML Recycling 2025 Limited | Financial services | 2025 |