| Hillyer Consulting Ltd | Financial services | 2018 |
| Hilton City Interiors Limited | Construction | 2020 |
| Hilton Thompson Limited | Financial services | 2001 |
| HIM AL Ltd | Wholesale & retail | 2024 |
| HIN Aylesbury Limited | Hospitality | 2015 |
| HIN Bexley Limited | Hospitality | 2015 |
| HIN Coventry Limited | Hospitality | 2015 |
| HIN Fareham Limited | Hospitality | 2015 |
| HIN Gloucester Limited | Hospitality | 2015 |
| HIN High Wycombe Limited | Hospitality | 2015 |
| HIN Hull Limited | Hospitality | 2015 |
| HIN Leicester Limited | Hospitality | 2015 |
| HIN Southampton Limited | Hospitality | 2015 |
| Hinckley Road Developments Limited | Real estate | 2023 |
| Hind Solutions Ltd | Wholesale & retail | 2025 |
| Hines Heavy Haul Ltd | Wholesale & retail | 2025 |
| Hinson Construction Limited | Construction | 2024 |
| Hinx Limited | Information & communication | 2019 |
| Hipf Limited | Wholesale & retail | 2025 |
| Hira Logistics Ltd | Water & waste | 2013 |
| Hired Hands Models Limited | Arts & recreation | 2018 |
| Hireplix Ltd | Information & communication | 2023 |
| Hirestaffingservices Ltd | Administrative & support | 2025 |
| Histolyte Ltd | Information & communication | 2025 |
| HIU Spare Parts Ltd | Wholesale & retail | 2019 |
| Hive Route Logistics Ltd | Transport & logistics | 2026 |
| Hizrat Limited | Information & communication | 2022 |
| HJ Build and Construct Ltd | Construction | 2021 |
| HJ Crown Ltd | Real estate | 2023 |
| Hj&S Property Ltd | Real estate | 2025 |
| HK Bassi Limited | Hospitality | 2025 |
| HK Prestige Limited | Wholesale & retail | 2026 |
| HK Recruitment Ltd | Administrative & support | 2025 |
| HK9 Security Limited | Professional & scientific | 2025 |
| HKG Takeaway Ltd | Hospitality | 2026 |
| HL Fashion Ltd | Information & communication | 2015 |
| HL Global Line Ltd | Information & communication | 2021 |
| HL Health Board CIC | Public administration | 2024 |
| HLS Security Packing Ltd | Administrative & support | 2005 |
| HM Food & Bakers Limited | Manufacturing | 2025 |
| HM Method Ltd | Wholesale & retail | 2025 |
| HM Prime Solutions Limited | Professional & scientific | 2025 |
| HM Safe LET Ltd | Real estate | 2019 |
| HM Transfer Ltd | Financial services | 2021 |
| HMJ Heating Limited | Construction | 2016 |
| HMP Accountants Limited | Professional & scientific | 2014 |
| HMR Builders Ltd | Construction | 2025 |
| HMS Construction Ltd | Construction | 2019 |
| HMS Global Business Ltd | Wholesale & retail | 2010 |
| HMS Serv Ltd | Health & social care | 2019 |
| HMX Capital Limited | Construction | 2019 |
| HND R Properties Ltd | Real estate | 2024 |
| HNP Associate Ltd | Real estate | 2020 |
| Hoatzin Solution Ltd | Information & communication | 2023 |
| HOC Enterprises Ltd | Information & communication | 2022 |
| HOD Construction Ltd | Construction | 2021 |
| Hoda Mechanics Ltd | Wholesale & retail | 2021 |
| Hodgson and Faraday Ltd. | Professional & scientific | 1984 |
| HOG and Partners Limited | Health & social care | 2023 |
| Hogarth Way Developments Limited | Real estate | 2024 |
| Hohebank Shipping Limited | Transport & logistics | 1988 |
| Holdings UK Co Ltd | Other services | 2010 |
| Holidaycreatorsuk Ltd | Administrative & support | 2026 |
| Holistic Healing Therapies Ltd | Health & social care | 2023 |
| Holla Labs Ltd | Information & communication | 2018 |
| Hollands Hairdressing Limited | Other services | 2015 |
| Hollington Doors Limited | Other services | 1980 |
| Holloway Property Investment Limited | Real estate | 2020 |
| Holloway Recruitment Limited | Administrative & support | 2022 |
| Holly Aviation Support Limited | Professional & scientific | 2013 |
| Holly Bush Close Management Company Limited | Professional & scientific | 2014 |
| Holly Care Services Limited | Administrative & support | 2021 |
| Holly's Nails & Beauty Ltd | Other services | 2015 |
| Hollydale Properties Limited | Other services | 1961 |
| Hollywood Catering and Events Ltd | Hospitality | 2022 |
| Hollywood Dogz Romford Ltd | Other services | 2019 |
| Hollywood Scaffolding UK Limited | Construction | 2020 |
| Holo Maintenance Ltd | Construction | 2024 |
| Holy Motors Limited | Wholesale & retail | 2020 |
| HOM Umut Ltd | Wholesale & retail | 2022 |
| Home and Luxury Ltd | Wholesale & retail | 2025 |
| Home BE Ltd | Wholesale & retail | 2020 |
| Home Church Ministries | Other services | 2025 |
| Home Done Ltd | Wholesale & retail | 2014 |
| Home Expert Ltd | Manufacturing | 2017 |
| Home Heros Property Services Ltd | Construction | 2025 |
| Home Inventory Services Limited | Real estate | 2025 |
| Home Invest Properties Ltd | Real estate | 2022 |
| Home of Mortgages Limited | Financial services | 2022 |
| Home of Specialist Finance Ltd | Financial services | 2022 |
| Home of the Project Network & Company Ltd | Administrative & support | 2014 |
| Home Properties 4 U Limited | Real estate | 2024 |
| Home Searches Limited | Real estate | 2018 |
| Home Support Services (Havering & Essex) Limited | Health & social care | 2013 |
| Home Sweet Home Care Limited | Health & social care | 2014 |
| Home Weavers Limited | Real estate | 2025 |
| HOME2 Properties Ltd | Real estate | 2016 |
| Homebuilt Ltd | Real estate | 2020 |
| Homefirst Conveyancing Searches Limited | Professional & scientific | 2022 |
| Homeforge Developments Ltd | Construction | 2026 |