| Hong United K Limited | Wholesale & retail | 2022 |
| Honington Energy Limited | Construction | 2025 |
| Hooga Group Limited | Construction | 2021 |
| Hoogo Waste Limited | Water & waste | 2017 |
| Hook & JAB CIC | Arts & recreation | 2023 |
| Hoopla Properties Ltd | Real estate | 2026 |
| Hooray Development Limited | Professional & scientific | 2021 |
| Hoover Candy Limited | Extraterritorial | 2000 |
| Hoover Trust Fund Limited(The) | Financial services | 1956 |
| Hope & Rody Ltd | Real estate | 2026 |
| Hope and Archer (UK) Ltd | Administrative & support | 2005 |
| Hope Beyond Trauma Training & Prevention CIC | Professional & scientific | 2026 |
| Hope Hawkins Property Ltd | Professional & scientific | 2018 |
| Hope in Homes Community Interest Company | Construction | 2026 |
| Hope Interiors Limited | Construction | 2021 |
| Hopkins PM Limited | Professional & scientific | 2024 |
| Hopton Associates Ltd | Professional & scientific | 2018 |
| Hopton Road (Barningham) Ltd | Real estate | 2023 |
| Horgov Engineering Ltd | Administrative & support | 2022 |
| Horizon Shift Limited | Information & communication | 2019 |
| Horizon-It Consulting Limited | Information & communication | 2018 |
| Horizons New Limited | Professional & scientific | 2012 |
| Horreo Consulting Limited | Administrative & support | 2025 |
| Horrocks Engineering Limited | Professional & scientific | 2012 |
| Horseshoe Croft Limited | Hospitality | 2024 |
| Horton Amusements Ltd | Administrative & support | 2018 |
| Hosany Consultancy Limited | Information & communication | 2016 |
| Hoseuk Ltd | Wholesale & retail | 2026 |
| Hosh Limited | Hospitality | 2025 |
| Hoskins Consulting Services Ltd | Professional & scientific | 2017 |
| Hospitalite Care Limited | Health & social care | 2015 |
| Hostease Management Ltd | Hospitality | 2026 |
| Hot Mods Pinball Ltd | Manufacturing | 2024 |
| Hot Sauce Design Ltd | Information & communication | 2019 |
| Hot Yoga Power Limited | Arts & recreation | 2012 |
| Hotchkiss Holdings Ltd | Real estate | 2022 |
| Hotel Gotham Newcastle Limited | Hospitality | 2020 |
| Hotpod Yoga Warrington Limited | Arts & recreation | 2020 |
| Houghton and Keillar Joinery Limited | Construction | 2017 |
| Houghton Site Engineering Limited | Professional & scientific | 2016 |
| Houghtons Funeral Directors Limited | Other services | 2006 |
| Houghton’S Fantasia Properties Limited | Real estate | 2019 |
| Houldsworth Consolidated Services Ltd | Manufacturing | 2018 |
| Hound Consultancy Ltd | Other services | 2020 |
| Hounds Kitchen Ltd | Wholesale & retail | 2020 |
| Houpert Dowling Engineering Limited | Administrative & support | 2014 |
| Housami Urology Ltd | Health & social care | 2021 |
| House Fred Limited | Real estate | 2025 |
| House of Alexandra Ltd | Wholesale & retail | 2025 |
| House of Avila Ltd | Professional & scientific | 2019 |
| House of Scent Craft Supplies Ltd | Wholesale & retail | 2024 |
| House of Swann Ltd | Manufacturing | 2025 |
| Housemark SPV Ltd | Financial services | 2026 |
| Housestyle Agencies Limited | Wholesale & retail | 2009 |
| Housextend Ltd | Professional & scientific | 2019 |
| Housing Disrepair Legal Services Limited | Professional & scientific | 2017 |
| Housing Law Ltd | Professional & scientific | 2024 |
| HOV25 Ltd | Professional & scientific | 2026 |
| Hove Consultants Limited | Administrative & support | 2023 |
| HOW 2 Train Ltd | Arts & recreation | 2025 |
| Howard Hackney LLP | | 2008 |
| Howard Metamedia Ltd | Professional & scientific | 2023 |
| Howards Travel Group T/A Howards Travel and Omega Busways Limited | Transport & logistics | 2020 |
| Howarth Holdings Limited | Households | 2025 |
| Howarth Traffic Solutions Ltd | Administrative & support | 2015 |
| Howell Property Lettings Limited | Real estate | 2026 |
| Howitt IT Services Limited | Information & communication | 2019 |
| Howl Properties Limited | Real estate | 2022 |
| Howl Resources Ltd | Professional & scientific | 2019 |
| Howley Engineering Limited | Manufacturing | 1983 |
| Howley Quay Motors Limited | Transport & logistics | 2001 |
| Howleycmd Ltd | Real estate | 2025 |
| Hoyle Law Ltd | Professional & scientific | 2021 |
| HP & HD Ltd | Extraterritorial | 2012 |
| HP Constructions & Design Ltd | Construction | 2022 |
| HP Soft Solutions Ltd | Other services | 2018 |
| HPA Construction Commercial Management Ltd | Administrative & support | 2023 |
| HPH Engineering Limited | Professional & scientific | 2014 |
| HPH Improvement&Building Ltd | Construction | 2022 |
| HQ Engineering Consultancy Limited | Administrative & support | 2015 |
| HQ Financial Planning Limited | Financial services | 2020 |
| HQ Networks Limited | Administrative & support | 2023 |
| HR Commercial Management Ltd | Administrative & support | 2026 |
| HR Connected Ltd | Administrative & support | 2016 |
| HR Hire Limited | Administrative & support | 1981 |
| HR Houses Limited | Real estate | 2025 |
| HR People Partners Ltd | Other services | 2017 |
| HRA & Co Ltd | Information & communication | 1999 |
| Hrcollectibles Ltd | Wholesale & retail | 2025 |
| Hreyansh Developers Limited | Real estate | 2022 |
| HRG Consulting Services Ltd | Information & communication | 2019 |
| Hrmaze Medical Limited | Health & social care | 2022 |
| HS Engineering Consultancy Ltd | Administrative & support | 2026 |
| HSM Cheshire Trading Ltd | Wholesale & retail | 2020 |
| Hssjs GP Services Limited | Health & social care | 2019 |
| Hub 2 Home Limited | Transport & logistics | 2017 |
| Hub and Cluster Limited | Extraterritorial | 2020 |
| Hub and Spoke Innovations Limited | Information & communication | 2017 |
| Hubercik Limited | Transport & logistics | 2018 |
| Hubert C & a Prosperity Ltd | Real estate | 2025 |