| Heath Management Limited | Households | 1984 |
| Heather M Stanning Ltd | Arts & recreation | 2011 |
| Heavy Industry Datum Ltd | Professional & scientific | 2026 |
| Helen Glover Ltd | Professional & scientific | 2012 |
| Hempgate Limited | Agriculture & fishing | 1977 |
| Hendaye Holdings Limited | Extraterritorial | 2002 |
| Henley Accounting Services Limited | Professional & scientific | 2001 |
| Henley and District Agricultural Association Limited | Information & communication | 1993 |
| Henley Auto Care Ltd | Wholesale & retail | 2012 |
| Henley Bootcamp Limited | Other services | 2014 |
| Henley Business Partnership Limited | Other services | 1996 |
| Henley Business Services Limited | Administrative & support | 2021 |
| Henley Capital Management Limited | Real estate | 2021 |
| Henley Care Limited | Health & social care | 2011 |
| Henley Carsmart Ltd | Wholesale & retail | 2019 |
| Henley Chocolate Theatre Company Ltd | Hospitality | 2011 |
| Henley Computer Repairs Ltd | Wholesale & retail | 2011 |
| Henley Consultants Ltd | Professional & scientific | 2020 |
| Henley Eco Energy Services Limited | Construction | 2024 |
| Henley Ecommerce Limited | Wholesale & retail | 2020 |
| Henley Education Ltd | Information & communication | 2025 |
| Henley Enterprise Park Limited | Real estate | 2014 |
| Henley Festival Limited | Arts & recreation | 1988 |
| Henley Flat Roofing and Chimneys Limited | Construction | 2018 |
| Henley Floating Homes Limited | Administrative & support | 2022 |
| Henley Friday Limited | Construction | 2026 |
| Henley GIN Limited | Manufacturing | 2020 |
| Henley Glass & Glazing Limited | Extraterritorial | 2010 |
| Henley Glass (UK) Limited | Construction | 2007 |
| Henley Glazing Limited | Extraterritorial | 2010 |
| Henley Group Finance Limited | Financial services | 2013 |
| Henley Group Holdings Limited | Professional & scientific | 1995 |
| Henley House Hart Street Ltd | Hospitality | 2022 |
| Henley Houseboat Co Ltd | Hospitality | 2022 |
| Henley Interior Design Ltd | Professional & scientific | 2026 |
| Henley Joinery Limited | Manufacturing | 2016 |
| Henley Kebab & Dessert Ltd | Hospitality | 2025 |
| Henley Leisure Ltd | Transport & logistics | 2024 |
| Henley Literary Festival Limited | Arts & recreation | 2011 |
| Henley Marketing Limited | Professional & scientific | 2018 |
| Henley Matters Limited | Professional & scientific | 2019 |
| Henley Medical Aesthetics Limited | Health & social care | 2013 |
| Henley Medical Writing Ltd | Health & social care | 2023 |
| Henley Mini Market Ltd | Wholesale & retail | 2019 |
| Henley Moves & Changes Ltd | Administrative & support | 2025 |
| Henley Partners Ltd | Professional & scientific | 2018 |
| Henley Pet Shop Limited | Wholesale & retail | 2003 |
| Henley Podiatry Ltd | Health & social care | 2023 |
| Henley Practice Ltd | Health & social care | 2016 |
| Henley Project Management Solutions Limited | Administrative & support | 2011 |
| Henley Property 2021/1 Ltd | Real estate | 2021 |
| Henley Property Solutions Ltd | Construction | 2024 |
| Henley Publishing Ltd | Transport & logistics | 2009 |
| Henley Radio CIC | Information & communication | 2026 |
| Henley River Boats Ltd | Transport & logistics | 2019 |
| Henley Roofing Company Limited | Construction | 2017 |
| Henley Rowing Club Trading Limited | Arts & recreation | 2018 |
| Henley Sailing Club,Limited(The) | Arts & recreation | 1903 |
| Henley Scan Limited | Professional & scientific | 2018 |
| Henley Sport & Leisure Limited | Professional & scientific | 2015 |
| Henley Technical Services Ltd | Professional & scientific | 2015 |
| Henley Vinyl Graphics Ltd | Professional & scientific | 2022 |
| Henley Windows Limited | Professional & scientific | 2014 |
| Henley Woods England Ltd | Wholesale & retail | 2024 |
| Henleyonthamesdogs Ltd | Other services | 2022 |
| Hennell Vehicle Services Ltd | Wholesale & retail | 2015 |
| Hennerton Consulting Ltd | Professional & scientific | 2026 |
| Henry Bentinck Associates Limited | Extraterritorial | 2016 |
| Heritage Blinds & Shutters Ltd | Construction | 2025 |
| Heritage Facilities Consultants Ltd | Professional & scientific | 2022 |
| Heritage Tree Services | | 1997 |
| Hewitt and House Ltd | Manufacturing | 2025 |
| Hexa Capital Limited | Financial services | 2025 |
| HHP Electrical Ltd | Construction | 2013 |
| HHP Fire & Security Ltd | Administrative & support | 2023 |
| Higgins Capital Ltd | Financial services | 2020 |
| Higgs & Co. (Holdings) Limited | Professional & scientific | 2013 |
| Highlands Trading Partners Ltd | Wholesale & retail | 2022 |
| HMT Corporate Finance Limited | Extraterritorial | 2025 |
| HMT LLP | | 2008 |
| Hobbs Property Management Company Limited | Households | 2005 |
| Hof's 777 International Limited | Manufacturing | 2022 |
| Hof's International Limited | Administrative & support | 2016 |
| Hof's South African Wines Limited | Wholesale & retail | 2009 |
| Hofmann Holdings Limited | Professional & scientific | 2007 |
| Hofmann Mews Management Limited | Households | 2012 |
| Hofmanns Henley Limited | Manufacturing | 2010 |
| Holbourne Limited | Real estate | 2019 |
| Holbrook & Partners Limited | Administrative & support | 2016 |
| Holbrook ( Hemel ) Limited | Financial services | 2020 |
| Holbrook (Laurel 2) Limited | Financial services | 2020 |
| Holbrook (Laurel) Limited | Real estate | 2020 |
| Home and Away Events Limited | Hospitality | 1998 |
| Homefarm Court Management Company Limited | Households | 1976 |
| Homes by Atom Limited | Real estate | 2025 |
| Homes of Henley Ltd | Households | 2024 |
| Honey Hills Ltd | Manufacturing | 2023 |
| Honeysdoggrooming Ltd | Other services | 2023 |
| Hoopla Heating and Plumbing Ltd | Construction | 2016 |
| Hope Spring Eternal Introduction Agency Ltd. | Other services | 2017 |