| Here to Help Recruitment Ltd | Administrative & support | 2020 |
| Herhair Nation Wide Ltd | Other services | 2025 |
| Heriot Court (Camberley) M. C. Limited | Households | 2002 |
| Heritage Property (Leamington Spa) Ltd | Extraterritorial | 2003 |
| Herti UK Limited | Wholesale & retail | 2007 |
| Hesami Ltd | Real estate | 2012 |
| Hestia Home Improvements Ltd | Construction | 2018 |
| Hestian Stays Ltd | Hospitality | 2022 |
| Hexagon Apartments Ltd | Construction | 2021 |
| Heylola Limited | Information & communication | 2020 |
| Heymer Holdings UK Limited | Real estate | 2020 |
| Heyshott Flats Limited | Households | 1975 |
| Heywood & Partners Surveyors Limited | Real estate | 1991 |
| HGR Holdings Ltd | Wholesale & retail | 2018 |
| Hi-Spec Electrics Limited | Construction | 2013 |
| Hiber Homes Limited | Real estate | 2019 |
| Hibiscus Care & Support Ltd | Health & social care | 2025 |
| Hicop Limited | Construction | 2025 |
| Hidden Peak Ltd | Construction | 2017 |
| High Cross Church Camberley | Other services | 2010 |
| Higham Wood Three Limited | Professional & scientific | 2010 |
| Highbrowblading Ltd | Other services | 2020 |
| Highclere Court Residents Association Limited | Households | 1976 |
| Highclere Lexethica Limited | Professional & scientific | 2024 |
| Higherground Flooring Ltd | Wholesale & retail | 2010 |
| Highfield Homes Ltd | Real estate | 2026 |
| Highstorma Limited | Administrative & support | 2025 |
| Highstreet Simeon Limited | Wholesale & retail | 2020 |
| Highworth Road (Faringdon) Management Company Limited | Households | 2021 |
| Hiljo Ltd | Construction | 2025 |
| Hill & Clark Limited | Real estate | 2011 |
| Hillbrow Court Ltd | Real estate | 1986 |
| Hillcrest GAS Services Ltd | Construction | 2021 |
| Hillcroft Property Limited | Real estate | 2015 |
| Hilton Capital Ltd | Professional & scientific | 2021 |
| Himalayan Restaurant Ltd | Hospitality | 2020 |
| Himley Village (Bicester) Management Company Limited | Households | 2025 |
| Hiperdist Limited | Information & communication | 2008 |
| Hire Higher Limited | Education | 2018 |
| HIS Business Limited | Manufacturing | 2011 |
| Historic Aircraft Industry Support CLG Limited | Other services | 2015 |
| Hisynergy Consulting Limited | Information & communication | 2003 |
| Hive Lofts Ltd | Other services | 2020 |
| Hjsons Limited | Administrative & support | 2023 |
| HK Barbershop Ltd | Other services | 2021 |
| HK News Ltd | Wholesale & retail | 2023 |
| HK Targets Ltd | Construction | 2025 |
| Hlilly Investments Group Limited | Real estate | 2022 |
| HMH PVT Ltd | Wholesale & retail | 2025 |
| Hodges Elite Homes Limited | Real estate | 2025 |
| Hoguk Ltd | Information & communication | 2020 |
| Holiday Golf Limited | Arts & recreation | 2012 |
| Holirem Limited | Information & communication | 2026 |
| Holly Hedge RG Limited | Professional & scientific | 1997 |
| Holly Louise Aesthetics Ltd | Other services | 2021 |
| Holmes Noise Ltd | Information & communication | 2013 |
| Holt Builders Limited | Construction | 2009 |
| Holywell Hook Heath Limited | Households | 1988 |
| HOM Sunuwar Ltd | Hospitality | 2023 |
| Home and Abroad Rentals Limited | Real estate | 2001 |
| Home Snacks Ltd | Hospitality | 2025 |
| Home Solutions (South) Limited | Construction | 2003 |
| Homebuilders Construction & Roofing Ltd | Construction | 2023 |
| Homecamp UK Student Services Ltd | Education | 2022 |
| Homelands Invest Limited | Professional & scientific | 2013 |
| Honeycombe Estates Ltd | Professional & scientific | 1973 |
| Hoobam Ltd | Wholesale & retail | 2015 |
| HOP Kiln Villas Management Co Limited | Households | 2005 |
| Hope Court (Ewell) Residents Management Company Ltd | Households | 2025 |
| Hope Hydrogen Ltd | Professional & scientific | 2023 |
| Hope Resources Limited | Professional & scientific | 2014 |
| Hopworth PUB Company Ltd | Hospitality | 2019 |
| Horizon Fireworks Ltd | Arts & recreation | 2021 |
| Horizon HQ Ltd | Construction | 2025 |
| Horizon Insight Partners Ltd | Other services | 2025 |
| Horner Foundations Holdings Limited | Professional & scientific | 2019 |
| Horner Foundations Ltd | Construction | 2016 |
| Hortus Collection Limited | Wholesale & retail | 2025 |
| Hose Rhodes Dickson Limited | Real estate | 2002 |
| Hoskins Developments Limited | Real estate | 2014 |
| Hospitality Hub Ltd | Hospitality | 2021 |
| Hot TUB Haven Ltd | Administrative & support | 2018 |
| House Inventory Pro Ltd | Professional & scientific | 2025 |
| House of C Limited | Real estate | 2025 |
| House of Khay Limited | Arts & recreation | 2024 |
| Household Estate Agents Limited | Extraterritorial | 1991 |
| Houston Global Limited | Professional & scientific | 2009 |
| Howard and Company (Egham) Ltd | Professional & scientific | 2015 |
| Howard Parnell Contractors Limited | Professional & scientific | 1983 |
| Howat O'Farrell Architecture LLP | | 2016 |
| Hoyle Investments Limited | Real estate | 2002 |
| HQ for MEN Limited | Other services | 2008 |
| HQ Strategic Investments (NO 1) Limited | Professional & scientific | 2019 |
| HQ Strategic Solutions Ltd | Professional & scientific | 2012 |
| HR102 Ltd | Real estate | 2015 |
| HRM Professional Services Limited | Information & communication | 2018 |
| HS Construction Services Limited | Construction | 2018 |
| Hsa/Hsd Pension Funds Trustees Limited | Extraterritorial | 1910 |
| Hssr Ltd | Professional & scientific | 2013 |
| HTC Corporate Services Limited | Professional & scientific | 2016 |