| Hosthive Properties Ltd | Hospitality | 2025 |
| Hot Box Holdings and Services Ltd | Financial services | 2020 |
| Hot Cakes Creative Ltd | Professional & scientific | 2014 |
| Hot Property Studios Ltd | Construction | 2022 |
| Hotbox Kitchen Limited | Hospitality | 2024 |
| Hotel and Catering Recruitment Specialist Limited | Administrative & support | 2011 |
| Hoth Kitchens Ltd | Wholesale & retail | 2021 |
| Hounsell Consulting Limited | Information & communication | 2010 |
| House & Sons Scaffolding Ltd | Construction | 2020 |
| House of Dazzles Limited | Other services | 2021 |
| House of Filth Ltd | Information & communication | 2025 |
| House of Love Care Ltd | Public administration | 2021 |
| House Scaffolding Ltd | Construction | 2020 |
| Household & Garden Clearance Ltd | Water & waste | 2017 |
| HOUSES101 Limited | Real estate | 2021 |
| Houseyshop Limited | Wholesale & retail | 2021 |
| Housing Directions Limited | Real estate | 2011 |
| Houss Ltd | Information & communication | 2025 |
| Houx Construction Limited | Construction | 2024 |
| Hovey Ltd | Professional & scientific | 2020 |
| Howard's Pet Care Limited | Wholesale & retail | 2003 |
| Howe Commercial Limited | Construction | 2019 |
| Howell Properties Ltd | Construction | 2010 |
| Howhy Consulting Ltd | Professional & scientific | 2019 |
| Hoyle Project Services Limited | Construction | 2013 |
| Hp&Ac Ltd | Construction | 2025 |
| Hpbf Holdings Ltd | Financial services | 2020 |
| Hpmorgan Healthcare Limited | Health & social care | 2018 |
| Hps-Swindon Limited | Construction | 2024 |
| HR Specialists International Ltd. | Professional & scientific | 2024 |
| HR Translation Services Limited | Professional & scientific | 2026 |
| HR3 Consult Limited | Administrative & support | 2007 |
| HRB Invest Ltd | Other services | 2016 |
| HRC Construct Ltd | Construction | 2018 |
| HRL Management Limited | Arts & recreation | 2018 |
| HRZ Propco Limited | Real estate | 2024 |
| HSH Ashmore Ltd | Real estate | 2025 |
| Hshc Training Academy Limited | Education | 2023 |
| Hsquare Associates Limited | Information & communication | 2026 |
| Hsretailsolutions Ltd | Wholesale & retail | 2026 |
| HTP Grange Holdco Limited | Administrative & support | 2011 |
| HTP Grange Limited | Administrative & support | 2011 |
| HTP LEP Limited | Administrative & support | 2011 |
| HTP PSP Limited | Administrative & support | 2011 |
| HTT Composites Limited | Manufacturing | 2020 |
| Hub Associates Limited | Administrative & support | 2003 |
| Hub Logistics & Transport Ltd | Transport & logistics | 2015 |
| Hub Transport Ltd | Transport & logistics | 2019 |
| Hublo Limited | Administrative & support | 2026 |
| Huckleberry Endeavour Limited | Financial services | 2026 |
| Hudson Homes Developments Limited | Construction | 2018 |
| Hudson Property Consultants Ltd | Real estate | 2024 |
| Hudson Vanguard Ltd | Construction | 2019 |
| Hudsons Fencing and Landscaping Ltd | Administrative & support | 2026 |
| Hudspiths Limited | Financial services | 2013 |
| Huff Equestrian Limited | Wholesale & retail | 2017 |
| Huggins Plastering Limited | Construction | 2017 |
| Hugh Irwin Specialist Decorators Limited | Construction | 2007 |
| Hugh Whitehead PSC Ltd | Professional & scientific | 2026 |
| Hughes Engineering 17 Ltd | Manufacturing | 2022 |
| Hughesairi Ltd | Professional & scientific | 2025 |
| Hughespubcompany Ltd | Hospitality | 2022 |
| Hugo IT Ltd | Information & communication | 2015 |
| Hulse Ground Construction Limited | Construction | 2025 |
| Humble Souls Clothing UK Ltd | Wholesale & retail | 2026 |
| Hummingbird Haven Ltd | Extraterritorial | 2023 |
| Hung Jing (UK) Ltd | Professional & scientific | 2016 |
| Hung TAI (UK) Ltd | Hospitality | 2016 |
| Hungerford Land Limited | Construction | 1998 |
| Hungry COD Limited | Hospitality | 2023 |
| Hungrynthirsty Ltd | Hospitality | 2025 |
| Hunny Ltd | Professional & scientific | 2020 |
| Hunt Cleaning Services Limited | Administrative & support | 2025 |
| Hunt Hospitality Chef and Catering Services Ltd | Hospitality | 2024 |
| Hunt Hospitality Services Limited | Administrative & support | 2020 |
| Hunt Scholars Tuition Ltd | Education | 2018 |
| Hunt Street Management Company Limited | Households | 2010 |
| Hunter Yell & Co Limited | Professional & scientific | 2025 |
| Hunters SW Motor Ltd | Wholesale & retail | 2024 |
| Huntley Homes Ltd | Real estate | 2021 |
| Hurrid Productions Ltd | Information & communication | 2014 |
| HUS and Home Ltd | Wholesale & retail | 2026 |
| Hush Investments Ltd | Real estate | 2023 |
| Hutkow Ltd | Transport & logistics | 2017 |
| Hutsn Limited | Wholesale & retail | 2024 |
| Hutton Content Ltd | Professional & scientific | 2026 |
| HUW Stephens Shooting Limited | Financial services | 2007 |
| HV Protection Solutions Ltd | Professional & scientific | 2021 |
| HV Support Ltd | Construction | 2022 |
| HV Technologies Ltd | Construction | 2018 |
| HVW Consulting Ltd | Information & communication | 2025 |
| HW Distribution Ltd | Transport & logistics | 2025 |
| HW Group Services Limited | Professional & scientific | 1968 |
| HW Office Services Limited | Administrative & support | 2018 |
| HWT Accounts Limited | Professional & scientific | 2011 |
| Hyde Enterprise Ltd | Wholesale & retail | 2018 |
| Hydeaway Games Ltd | Arts & recreation | 2023 |
| Hydra Plumbing Services Limited | Construction | 2020 |
| Hydraform Limited | Wholesale & retail | 2017 |
| Hydraulogic Limited | Manufacturing | 2002 |