| HKW Developments Limited | Construction | 2017 |
| HL Woodford Ltd | Wholesale & retail | 2018 |
| HMF Express Ltd | Wholesale & retail | 2025 |
| HMO 1 Ltd | Real estate | 2021 |
| HMO 2 Ltd | Real estate | 2021 |
| HMO 3 Ltd | Real estate | 2021 |
| HMO 4 Ltd | Real estate | 2023 |
| HMO 5 Ltd | Real estate | 2021 |
| HMO 6 Ltd | Real estate | 2024 |
| HMO 7 Ltd | Real estate | 2024 |
| HMO 8 Ltd | Real estate | 2025 |
| HMO 9 Ltd | Real estate | 2025 |
| HNL Tutors Ltd | Administrative & support | 2021 |
| Hoco Property Limited | Construction | 2022 |
| Hodgson Apartments Residents Limited | Households | 2024 |
| Hoists and Cranes UK Ltd | Manufacturing | 2018 |
| HOK Software Ltd | Information & communication | 2022 |
| Hokahay Limited | Manufacturing | 2026 |
| Holbury Tool Hire Limited | Administrative & support | 2002 |
| Holcombe Gardens Ramsbottom Management Company Limited | Real estate | 2020 |
| Holger Danske Ltd | Real estate | 2017 |
| Holistic Health by Sharon Ltd | Other services | 2026 |
| Holley Industrial Leasing LLP | | 2022 |
| Hollington Grange Management Company Limited | Households | 2021 |
| Hollingworth Law Limited | Professional & scientific | 2017 |
| Holloway and Dyne Limited | Real estate | 1976 |
| Hollows-Tier Ltd | Real estate | 2019 |
| Holly House Salisbury Limited | Households | 2024 |
| Holly View (ST Dials) Management Company Limited | Households | 2024 |
| Hollybush Capital Ltd | Wholesale & retail | 2024 |
| Holt Court (Salisbury) Management Company Limited | Households | 2016 |
| Holy Archangels Michael and Gabriel Limited | Administrative & support | 2022 |
| Home & Hound, Mortgage and Protection Ltd | Financial services | 2024 |
| Home Fires Limited | Construction | 2011 |
| Home Front Limited | Manufacturing | 1996 |
| Home Loving Dogs Limited | Other services | 2013 |
| Home Paddocks Limited | Real estate | 2002 |
| Home Tails Limited | Hospitality | 2024 |
| Home-Start South Wiltshire | Health & social care | 2004 |
| Homebazaaruk Ltd | Wholesale & retail | 2014 |
| Homecare Group Holdings Limited | Financial services | 2026 |
| Homefield (Crowland) Residents Management Co. Ltd | Households | 2021 |
| Homekonnect Ltd | Information & communication | 2020 |
| Homespace Residential (UK) Limited | Construction | 2023 |
| Homewood Plumbing & Heating Ltd | Construction | 2020 |
| Homley Limited | Construction | 2022 |
| HON & Co Bloodstock Limited | Arts & recreation | 2018 |
| Honest Holidays Ltd | Administrative & support | 2014 |
| Honeybe Creative Ltd | Professional & scientific | 2012 |
| Honeypot People Ltd | Administrative & support | 2012 |
| Honeystreet Logs Limited | Administrative & support | 2013 |
| Honeystreet Sawmills Limited | Manufacturing | 2000 |
| Hook Medico Legal Limited | Health & social care | 2013 |
| Hook Place Developments Limited | Professional & scientific | 1981 |
| Hookland Developments Limited | Construction | 2007 |
| Hope and Homes for Children | Health & social care | 2001 |
| Hope Orchard (Hadlow) Management Company Limited | Households | 2021 |
| Hopefield Grange (Benson Phase 2) Management Company Limited | Real estate | 2018 |
| Hopefield Grange (Benson) Management Company Limited | Households | 2017 |
| Hopeful Coaching and Leadership Ltd | Professional & scientific | 2026 |
| Hops and Yeast Limited | Hospitality | 2019 |
| Hopton Management Company Limited | Households | 2007 |
| Hoptune Ltd | Health & social care | 2002 |
| Horatio's Garden Shop Ltd | Wholesale & retail | 2013 |
| Horatio's Garden Trading Limited | Administrative & support | 2023 |
| Horgan Twinn Property Consultants Limited | Construction | 2014 |
| Horizon CPD Limited | Information & communication | 2016 |
| Horizon Energy Infrastructure Limited | Administrative & support | 2009 |
| Horizon Energy Ventures Limited | Administrative & support | 2020 |
| Horizon Water Infrastructure Limited | Administrative & support | 2024 |
| Hornsby FIC | Professional & scientific | 2025 |
| Horse Gate Property Limited | Real estate | 2024 |
| Horse-E-Things Ltd | Arts & recreation | 2021 |
| Horseandgroomwood Ltd | Hospitality | 2024 |
| Horsebridge Capital Limited | Financial services | 2025 |
| Horsted Gardens Residents Limited | Real estate | 1990 |
| Horton Road Management Company Ltd | Real estate | 2016 |
| Horton Trustees (NO.1) Limited | Professional & scientific | 2004 |
| Horton Trustees (NO.2) Limited | Professional & scientific | 2004 |
| Horyzen Limited | Administrative & support | 2023 |
| Host With Grace Limited | Professional & scientific | 2021 |
| Hosted Business Solutions Limited | Information & communication | 2006 |
| Hostile-Climate Limited | Wholesale & retail | 2018 |
| Hot Water Media Limited | Information & communication | 2012 |
| Hotel Landscapes Ltd | Administrative & support | 2023 |
| Houghton Conquest Management Company Limited | Households | 2017 |
| Hounsome Fields (Basingstoke) Management Company Limited | Real estate | 2020 |
| Hounsome IT Limited | Information & communication | 2016 |
| House Proud Management Limited | Other services | 2009 |
| Houses on Water Ltd | Manufacturing | 2021 |
| Houso Limited | Information & communication | 2019 |
| Houston Home Solutions Ltd | Construction | 2023 |
| Hova Ltd | Wholesale & retail | 2018 |
| Hoverstock Limited | Agriculture & fishing | 1983 |
| Howard Close Wilstead Management Company Limited | Households | 2022 |
| Howard Smith (Fovant) Limited | Real estate | 2014 |
| Howard-Vyse Consulting Limited | Professional & scientific | 2023 |
| Howardjones Group Ltd | Construction | 2019 |
| Howdenwhite LLP | | 2003 |
| Howells Lettings Limited | Real estate | 2019 |