| Homes on Demand Development Projects Ltd | Construction | 2018 |
| HOMES2IMPROVE Ltd | Construction | 2023 |
| Homescapes Building Ltd | Construction | 2026 |
| Homesecure Property Services Ltd | Real estate | 2011 |
| Homeshaw Ltd | Real estate | 2017 |
| Homesphere Estates Ltd | Real estate | 2019 |
| Homestead Interiors Ltd | Construction | 2021 |
| Homesweet Homes Limited | Construction | 2005 |
| Homii Gadgets Ltd | Wholesale & retail | 2026 |
| Hominin Care Limited | Administrative & support | 2025 |
| Hominin Search Limited | Professional & scientific | 2020 |
| Homlet Ltd | Real estate | 2019 |
| HOMVELL96 Ltd | Wholesale & retail | 2026 |
| Homystore Ltd | Wholesale & retail | 2022 |
| Honey IT Solution Ltd | Information & communication | 2023 |
| Honey Tony Co., Ltd | Wholesale & retail | 2023 |
| Honey Trading Limited | Water & waste | 2017 |
| Honeyberry Gardens Entertainment Ltd | Hospitality | 2018 |
| Honeybump Ltd | Wholesale & retail | 2024 |
| Honeycomb Homecare Ltd | Real estate | 2025 |
| Honeydew M. Services Limited | Health & social care | 2022 |
| Hong DE UK Limited | Manufacturing | 2015 |
| Hongweihouse Limited | Real estate | 2019 |
| Hoods Health Ltd | Wholesale & retail | 2012 |
| Hoopza HIT Ltd | Wholesale & retail | 2021 |
| Hooria & Juwariyah Ltd | Real estate | 2023 |
| Hooria Property Management Ltd | Households | 2018 |
| HOP & Jump Productions Ltd | Arts & recreation | 2019 |
| Hopal Construction Ltd | Construction | 2002 |
| Hopal Developments Ltd | Construction | 2021 |
| Hope and Freedom Ministries | Other services | 2021 |
| Hope Medical Services Limited | Real estate | 2005 |
| Hope Print Group Limited | Manufacturing | 1998 |
| Hopson Ventilation Ltd | Construction | 2018 |
| Hoque & Sons Ltd | Wholesale & retail | 2019 |
| Hoque Leasehold Limited | Real estate | 2025 |
| Horain Traders Ltd | Wholesale & retail | 2025 |
| Horizon Business Consultants Ltd | Wholesale & retail | 2014 |
| Horizon Consultancy & Utilities Ltd | Professional & scientific | 2022 |
| Horizon Development UK Ltd | Real estate | 2009 |
| Horizon Integrated Services Ltd | Professional & scientific | 2024 |
| Horizon Mart Ltd | Wholesale & retail | 2025 |
| Horizon South East Ltd | Real estate | 2023 |
| Horizon Tech Limited | Wholesale & retail | 2025 |
| Horizon Technovations Ltd | Wholesale & retail | 2026 |
| Horizon Vault Group Ltd | Hospitality | 2026 |
| HORIZON247 Group Ltd | Education | 2026 |
| Horizons Enterprises Ltd | Wholesale & retail | 2026 |
| Hormo Flow Ltd | Wholesale & retail | 2025 |
| Hornbeam Road Management Company Limited(The) | Households | 1981 |
| Hornchurch Coach Limited | Transport & logistics | 2025 |
| Horneggli Ltd | Real estate | 2023 |
| Horodca DRY Liner Ltd | Construction | 2019 |
| Horse & Fish Ltd | Transport & logistics | 2020 |
| Horsleys Sameday Ltd | Transport & logistics | 2024 |
| Hoshiyar Singh Limited | Construction | 2025 |
| Hospitable Care Services Limited | Health & social care | 2022 |
| Hot & Soft Drinks UK and Europe Ltd | Wholesale & retail | 2019 |
| Hot Million Ltd | Hospitality | 2025 |
| Hot Sizzling Grill Ltd | Hospitality | 2025 |
| Hotbox Express Limited | Hospitality | 2025 |
| Hotdog Media Limited | Information & communication | 2025 |
| Hotel CPB Ltd | Real estate | 2024 |
| Hotel Dunstable Opco Ltd | Hospitality | 2023 |
| Hotel Luton Ltd | Hospitality | 2025 |
| Hotel Redditch Opco Ltd | Hospitality | 2023 |
| Hotel Revenue Limited | Administrative & support | 2013 |
| Hotel Swindon (Opco) Limited | Hospitality | 2015 |
| Hotel Victoria Group Limited | Hospitality | 2018 |
| Hotplan Limited | | 1986 |
| Hotshots Airsoft Ltd | Arts & recreation | 2026 |
| Hott Box Ltd | Extraterritorial | 2023 |
| House 10 Ltd | Real estate | 2024 |
| House Assist Limited | Health & social care | 2023 |
| House Craft Ltd | Wholesale & retail | 2023 |
| House DEN Limited | Real estate | 2022 |
| House LET Real Estate Ltd | Real estate | 2022 |
| House of ALI Ltd | Wholesale & retail | 2024 |
| House of Amour Ltd | Information & communication | 2026 |
| House of Aquilaria Ltd | Manufacturing | 2025 |
| House of Ayesha Ltd | Wholesale & retail | 2020 |
| House of BEY Ltd | Professional & scientific | 2023 |
| House of Dreams M-D-R Travel Ltd | Administrative & support | 2024 |
| House of Eezham Ltd | Wholesale & retail | 2025 |
| House of Feast Ltd | Hospitality | 2025 |
| House of H&K Ltd | Wholesale & retail | 2025 |
| House of JEB Ltd | Real estate | 2026 |
| House of Kilts Limited | Wholesale & retail | 2026 |
| House of Labels Limited | Wholesale & retail | 2022 |
| House of Moments Ltd | Professional & scientific | 2026 |
| House of Motors London Limited | Wholesale & retail | 2017 |
| House of Rangposh Ltd | Manufacturing | 2020 |
| House of Riches Limited | Administrative & support | 2024 |
| House of Seasons Limited | Other services | 2015 |
| House of Sofia Ltd | Arts & recreation | 2025 |
| House of Valeri Ltd | Professional & scientific | 2019 |
| House of Zoot Limited | Manufacturing | 2023 |
| House Parti Ltd. | Professional & scientific | 2025 |
| Houseboat (Radlett) Management Company Limited | Real estate | 2006 |
| Household and DIY Hub Limited | Wholesale & retail | 2026 |