| HPH Swerve Consultants Limited | Professional & scientific | 2020 |
| HPM Management Ltd | Real estate | 2019 |
| HPR Construction PVT Ltd | Construction | 2023 |
| HPV Suppiles Ltd | Construction | 2022 |
| HQ Masonry Ltd | Construction | 2026 |
| HQS Construction Ltd | Construction | 2025 |
| HQZ Trend House Ltd | Wholesale & retail | 2026 |
| HR Build Ltd | Construction | 2025 |
| HR Cars London Limited | Wholesale & retail | 2024 |
| HR Dent Ltd | Health & social care | 2013 |
| HR Production Ltd | Information & communication | 2026 |
| HR Smart Options Ltd. | Administrative & support | 2019 |
| HRC Limited | Real estate | 2016 |
| Hrece Ltd | Construction | 2025 |
| Hrisspace Ltd | Professional & scientific | 2025 |
| HRM Portfolio Ltd | Real estate | 2020 |
| HRP Engineering Ltd | Professional & scientific | 2022 |
| Hrpr Food & Beverage Ltd | Wholesale & retail | 2025 |
| HRR International Limited | Wholesale & retail | 2012 |
| HRS Dental Group Ltd | Health & social care | 2024 |
| HS & N Printers Limited | Manufacturing | 1992 |
| HS Corporate Communications Ltd | Administrative & support | 2018 |
| HS Global Accountancy Ltd | Professional & scientific | 2021 |
| HS Group Global Limited | Transport & logistics | 2024 |
| HS Inspiration Ltd | Wholesale & retail | 2020 |
| HS Legal Services Limited | Professional & scientific | 2025 |
| HS PR Consultancy Limited | Professional & scientific | 2023 |
| HS Propertyco Limited | Real estate | 2016 |
| HS Services (UK) Ltd | Health & social care | 2012 |
| HSA19MOBILE Limited | Information & communication | 2019 |
| Hsdcp UK Ltd | Wholesale & retail | 2025 |
| Hsdt Property Solutions Ltd | Real estate | 2021 |
| HSE25 Limited | Professional & scientific | 2025 |
| HSG Swallows Foundation | Arts & recreation | 2010 |
| HSH International Ltd | Wholesale & retail | 2019 |
| HSL Nails Ltd | Other services | 2026 |
| Hsmf Scientific Limited | Information & communication | 2014 |
| Hsnoah Joinery Construction Ltd | Construction | 2023 |
| HSP Chesham Limited | Construction | 2022 |
| HSP High Standard Properties Ltd | Real estate | 2019 |
| HSP Labs Limited | Financial services | 2021 |
| HSP Residential Limited | Real estate | 2019 |
| HT Construct and Consultancy Limited | Professional & scientific | 2026 |
| HT Wellness Therapy Limited | Other services | 2018 |
| HTC Management (London) Ltd | Professional & scientific | 2012 |
| HTD Solutions Ltd | Information & communication | 2018 |
| HTL Construct Ltd | Construction | 2018 |
| Htmtrading Limited | Wholesale & retail | 2026 |
| HTR Ltd | Transport & logistics | 2024 |
| HTS DIY Ltd | Wholesale & retail | 2025 |
| Htsc Ltd | Information & communication | 2022 |
| HU London Ltd | Wholesale & retail | 2025 |
| Huachen Construction Ltd | Construction | 2026 |
| Huak Limited | Extraterritorial | 2017 |
| Hub Finance Limited | Administrative & support | 2013 |
| HUB888 Ltd | Professional & scientific | 2015 |
| Hubei Britain Business Association | Other services | 2018 |
| Hucknall Limited | Wholesale & retail | 2016 |
| Hudson Legal Ltd | Other services | 2011 |
| Hudson Lifting Limited | Administrative & support | 2018 |
| Hudson Marine Limited | Transport & logistics | 2013 |
| Hufc Coaching Limited | Arts & recreation | 2026 |
| Huffer Real Estate Limited | Real estate | 2018 |
| Huggins & Squire Limited | Construction | 1975 |
| Hujja Foods Ltd | Wholesale & retail | 2025 |
| Hujjat School Trust | Education | 2014 |
| Hukum Estate Ltd | Real estate | 2022 |
| Hulubina Ltd | Construction | 2017 |
| HUM MAT Ltd | Administrative & support | 2025 |
| Human Kind Relationship Coaching Ltd | Other services | 2022 |
| Human Tech Consulting Limited | Administrative & support | 2025 |
| Humanshift Ltd | Information & communication | 2026 |
| Hummingbird Kitchen Limited | Hospitality | 2018 |
| Hummingbird Nexus Limited | Wholesale & retail | 2024 |
| Hummingbird Village C.I.C. | Education | 2025 |
| Humphrey Carrasco Limited | Administrative & support | 2003 |
| Humres Recruitment Ltd | Administrative & support | 2010 |
| Humsah Consultancy Limited | Professional & scientific | 2023 |
| Humsah Investments Limited | Real estate | 2024 |
| Hundred Mile Car Club Limited | Wholesale & retail | 2023 |
| Hunny Holdings Ltd | Households | 2020 |
| Hunt Blake Consultancy Ltd | Professional & scientific | 1994 |
| Hunt Marketing Group Ltd | Professional & scientific | 2023 |
| Hunter Brook Property Ltd | Real estate | 2024 |
| Hunter Group Solutions Limited | Administrative & support | 2025 |
| Hunter Invest Ltd | Real estate | 2022 |
| Hunter UK Associates Ltd | Transport & logistics | 2014 |
| Hunter Ventures Ltd | Real estate | 2021 |
| Huntingdon Smiles Limited | Health & social care | 2024 |
| Hunton Hotels Limited | Hospitality | 2020 |
| Hurley Road Properties Ltd | Real estate | 2022 |
| Hurlock Family Homes Limited | Real estate | 2018 |
| Hurstwood Court Limited | Households | 2007 |
| Huskards Care Limited | Health & social care | 1997 |
| Huskards New Care Ltd | Health & social care | 2010 |
| Huss Corp Limited | Information & communication | 2004 |
| Hussein Hakim Limited | Other services | 2024 |
| Hussein Hire Ltd | Transport & logistics | 2026 |
| Hustle Life Limited | Professional & scientific | 2023 |
| Hutchings & Harding Europe Limited | Manufacturing | 1957 |