| Horton Exhibition Services Limited | Manufacturing | 2021 |
| Horwood Mill Management Company Limited | Households | 2019 |
| Hossain Brothers Business Solution Ltd | Financial services | 2026 |
| Host JP Ltd | Hospitality | 2026 |
| Hosted Cloud Desktop Ltd | Information & communication | 2025 |
| Hostreadycleaning Limited | Administrative & support | 2026 |
| Hot Pharma Ltd | Wholesale & retail | 2014 |
| Hot POT Curry Limited | Hospitality | 2018 |
| Hot Toffee Ltd | Information & communication | 2022 |
| Hotbed Camberley Limited Partnership | | 2011 |
| Hotbed Commercial Property 2006 Limited Partnership | | 2006 |
| Hotbed Commercial Property 2007 Limited Partnership | | 2007 |
| Hotbed Commercial Property 2008 Limited Partnership | | 2008 |
| Hotbed Ground Rents Limited Partnership | | 2009 |
| Hotbed Irthlingborough Limited Partnership | | 2009 |
| Hotbed Midsummer Boulevard Limited Partnership | | 2011 |
| Hotbed Parallel Private Equity 2008 Limited Partnership | | 2008 |
| Hotbed Parallel Private Equity 2010 Limited Partnership | | 2010 |
| Hotbed Parallel Ventures 2007 LP | | 2007 |
| Hotbed Parallel Ventures LP | | 2006 |
| Hotbed Private Equity 2006 Limited Partnership | | 2006 |
| Hotbed Private Equity 2007 Limited Partnership | | 2007 |
| Hotbed Private Equity 2008 Limited Partnership | | 2008 |
| Hotbed Private Equity 2010 Limited Partnership | | 2010 |
| Hotbed Property 2010 Limited Partnership | | 2010 |
| Hotbed Stratford Limited Partnership | | 2010 |
| Hotbed Tonbridge Limited Partnership | | 2011 |
| Hotbed-Rowan Property Fund NO 1 Partnership | | 2003 |
| Hotel Ellenby Ltd | Hospitality | 2004 |
| Hotel LA Tour (Milton Keynes) Ltd | Hospitality | 2017 |
| Hotel LA Tour Limited | Hospitality | 2007 |
| Hotel MK Limited | Hospitality | 2001 |
| Hotels&Homes Ltd | Hospitality | 2025 |
| Hotshots Sports Bar Ltd | Hospitality | 2024 |
| Houghton Hall Management Limited | Real estate | 1997 |
| Houghton Upvc Installations Limited | Construction | 1997 |
| Hounslow Farm Estate Limited | Professional & scientific | 2025 |
| House 4 Tenants Ltd | Real estate | 2021 |
| House 52 Ltd | Extraterritorial | 2014 |
| House Chain Limited | Other services | 2001 |
| House Cleaning Milton Keynes Ltd | Administrative & support | 2026 |
| House LET Limited | Real estate | 2002 |
| House Made Home Limited | Real estate | 2018 |
| House of Bomas Ltd | Wholesale & retail | 2019 |
| House of Buckingham Limited | Wholesale & retail | 2014 |
| House of Champions Project Ltd. | Health & social care | 2014 |
| House of Ella JAY Limited | Administrative & support | 2022 |
| House of Errors Holdings Ltd | Financial services | 2026 |
| House of Health Ltd | Health & social care | 2016 |
| House of Holes (Derby) Ltd | Hospitality | 2023 |
| House of Ilona Limited | Administrative & support | 2014 |
| House of Meerah (UK) Ltd | Wholesale & retail | 2026 |
| House of OUD Ltd | Wholesale & retail | 2020 |
| House of Sliders Ltd | Hospitality | 2023 |
| House of Tans and Beauty Ltd | Other services | 2020 |
| House of Tara Ltd | Wholesale & retail | 2019 |
| House of Trichology Ltd | Wholesale & retail | 2024 |
| House to Hub Ltd | Information & communication | 2025 |
| Houseofsonderai Ltd | Professional & scientific | 2025 |
| Houyhnhnm Harras Ltd | Financial services | 2022 |
| HOW Nutraceutical Limited | Wholesale & retail | 2016 |
| HOW to Talk at Work Ltd | Education | 2024 |
| Howard Family Holdings Limited | Financial services | 2024 |
| Howard L & T Ltd | Wholesale & retail | 2026 |
| Howdec Limited | Construction | 2020 |
| Hoxton Lofts Ltd | Real estate | 2020 |
| HP Trader Limited | Transport & logistics | 2025 |
| Hp-Racing Ltd | Information & communication | 2017 |
| Hpaccountingservices Limited | Professional & scientific | 2021 |
| HPY Investments Limited | Financial services | 2020 |
| HR Hub (UK) Limited | Professional & scientific | 2014 |
| HR String Ltd | Wholesale & retail | 2018 |
| HR Tech Partnership London LLP | | 2016 |
| HRA IT Ltd | Information & communication | 2025 |
| Hridya Childminding Limited | Health & social care | 2017 |
| Hrit Transformation Consultancy Ltd | Information & communication | 2023 |
| Hrld Consulting Ltd | Professional & scientific | 2020 |
| HRR and Assoc Ltd | Real estate | 2024 |
| HRR Consulting Limited | Information & communication | 2009 |
| HRT Holdings Ltd | Financial services | 2025 |
| Hrux Limited | Information & communication | 2016 |
| HS Trading Ltd | Wholesale & retail | 2021 |
| HS Treatment Services Ltd | Other services | 2026 |
| Hs&B Construction Ltd | Construction | 2020 |
| HSB Real Estate Ltd | Real estate | 2025 |
| HSB Supplies Ltd | Wholesale & retail | 2022 |
| Hsbcad Limited | Information & communication | 2014 |
| Hsbrjn Property Ltd | Real estate | 2022 |
| HSD Estates Ltd | Real estate | 2025 |
| HSH Solutions Ltd | Information & communication | 2019 |
| HSK Academic Consultancy Ltd | Education | 2025 |
| HSK Emporium Ltd | Wholesale & retail | 2025 |
| HSK Home Improvements Limited | Administrative & support | 2021 |
| HSL Property Limited | Professional & scientific | 1995 |
| HSL Roadside Limited | Real estate | 2002 |
| HSL Safety Ltd | Health & social care | 2026 |
| Hssv Info Limited | Information & communication | 2020 |
| HT Advisers Limited | Information & communication | 2020 |
| HTDMEDIA360 Ltd | Information & communication | 2021 |
| HTM Consulting Ltd | Professional & scientific | 2007 |