| Hamilton Rose Limited | Transport & logistics | 2015 |
| Hamilton Scott Limited | Real estate | 2016 |
| Hamilton Tax Services Limited | Professional & scientific | 2022 |
| Hamilton's Contracting Ltd | Agriculture & fishing | 2023 |
| Hamiltonbig Ltd | Professional & scientific | 2020 |
| Hamish Niven Ltd | Information & communication | 2024 |
| Hamlee Build Ltd | Construction | 2020 |
| Hamlets Masterplanning Ltd. | Professional & scientific | 2026 |
| Hamlin Estates Limited | Construction | 1978 |
| Hammond Associates Limited | Wholesale & retail | 1995 |
| Hampnett Farm Limited | Financial services | 2017 |
| Hampnett Land Limited | Financial services | 2017 |
| Hampstead House Investments Ltd | Real estate | 2019 |
| Hampton Prescott Ltd | Administrative & support | 2022 |
| Hampton Valley Gardens Ltd | Administrative & support | 2025 |
| Hams Hall NG Limited | Energy | 2023 |
| Hams Lane NW Bess Limited | Energy | 2023 |
| Hamzeh Ajami Ltd | Hospitality | 2026 |
| Hanaben Limited | Real estate | 2017 |
| Hanano Technologies Ltd | Professional & scientific | 2024 |
| Hanbury Consultancy Services Limited | Professional & scientific | 2008 |
| Handbag Television Limited | Information & communication | 1996 |
| Handmade in - Painswick Ltd | Wholesale & retail | 2021 |
| Handmade in the UK Ltd | Wholesale & retail | 2026 |
| Hands on Property Services & Developments Ltd | Construction | 2020 |
| Handy Creative Co. Ltd | Information & communication | 2024 |
| Haner Limited | Hospitality | 2021 |
| Hangovr Limited | Wholesale & retail | 2024 |
| Hanks Electrical Ltd | Construction | 2016 |
| Hanmae Affiliate Ltd | Wholesale & retail | 2025 |
| Hannah Brown Ltd | Administrative & support | 2025 |
| Hannah Kimber Jewellery Ltd | Manufacturing | 2017 |
| Hanover Day Nursery Limited | Health & social care | 2025 |
| Hanover Development Group Ltd | Construction | 2025 |
| Hanover House Advisory LLP | | 2007 |
| Hansa Mekanika Limited | Wholesale & retail | 2023 |
| Hansabuild Limited | Construction | 2017 |
| Hansac Limited | Real estate | 2007 |
| Hanscomb Intercontinental Ltd | Professional & scientific | 2010 |
| Hanshel Seals Limited | Wholesale & retail | 2002 |
| Hanstone Court Management Company (NO 2) Limited | Households | 1989 |
| Haobang UK Limited | Real estate | 2015 |
| Happy Beans Limited | Health & social care | 2024 |
| Happy by Design Limited | Information & communication | 2016 |
| Happy Fuel Ltd | Wholesale & retail | 2013 |
| Happy HIU Limited | Professional & scientific | 2024 |
| Happy Home Cleaning Cheltenham Ltd | Administrative & support | 2018 |
| Happy Kids Education Centre Ltd | Education | 2017 |
| Happy Otter Games Ltd | Information & communication | 2015 |
| Happy&Good Deals Limited | Wholesale & retail | 2025 |
| Happycaps Mushroom Farm Ltd | Agriculture & fishing | 2024 |
| Harber Public Relations Ltd | Professional & scientific | 2016 |
| Harbour Key Holdings Limited | Professional & scientific | 2017 |
| Harbour Key Limited | Professional & scientific | 2011 |
| Harbour Publications Limited | Information & communication | 2012 |
| Harck Properties Ltd | Real estate | 2021 |
| Harding & Co Accountancy Limited | Professional & scientific | 2025 |
| Harding Associates Limited | Professional & scientific | 1996 |
| Harding Leadership Consulting Limited | Professional & scientific | 2019 |
| Harding Portfolio Holdings Ltd | Financial services | 2026 |
| Harding's Scaffolding Cheltenham Ltd | Construction | 2025 |
| Hardwick Candle Co Limited | Wholesale & retail | 2023 |
| Hardwick Grove Management Services Limited | Professional & scientific | 2001 |
| Harford Property Management Ltd | Real estate | 2024 |
| Hargreaves Design Ltd | Professional & scientific | 2025 |
| Harihar Accountants & Business Advisers Ltd. | Professional & scientific | 2014 |
| Harihar Real Estate Management Ltd | Real estate | 2019 |
| Harker Green NG Limited | Financial services | 2022 |
| Harkett Wood Consulting Limited | Professional & scientific | 2014 |
| Harlequin Hotels (Cheltenham) Limited | Hospitality | 2002 |
| Harligan Ltd | Other services | 2024 |
| Harlyn Supply Co Limited | Hospitality | 2025 |
| Harman Landscape Architecture Limited | Professional & scientific | 2025 |
| Harmony Energy 2 Limited | Other services | 2016 |
| Harmony Energy Winds Limited | Energy | 2012 |
| Harnell Hospitality Limited | Professional & scientific | 2026 |
| Harness Group UK Limited | Information & communication | 2018 |
| Harp Hill Gardens (Cheltenham) Residents Association Limited | Households | 1977 |
| Harpenden Orthodontics LLP | | 2008 |
| Harper LEE Property Ltd | Real estate | 2024 |
| Harper Sheldon Limited | Professional & scientific | 2001 |
| Harper Zaine Limited | Real estate | 2018 |
| Harpton Sporting Club Ltd | Arts & recreation | 2026 |
| Harrad & Bloom Ltd | Hospitality | 2020 |
| Harriet Ashton Interiors Ltd | Professional & scientific | 2020 |
| Harriet Parsons Garden Design Ltd | Professional & scientific | 2017 |
| Harris and Graves Scaffolding Limited | Construction | 2002 |
| Harris Jenkins Partnership Ltd | Professional & scientific | 2025 |
| Harrison Charles Limited | Information & communication | 1999 |
| Harrison White Limited | Professional & scientific | 2005 |
| Harrolls Ltd | Administrative & support | 2025 |
| Harrop Legal Limited | Professional & scientific | 2026 |
| Harry Antonious Construction Ltd | Construction | 2014 |
| Harry Pack Art Ltd | Arts & recreation | 2021 |
| Harry Steven Consulting Limited | Professional & scientific | 2014 |
| Hart Mechanical Engineering Ltd | Construction | 2018 |
| Hart Minerals Limited | Real estate | 2022 |
| Hartham Bath Stone Limited | Extraterritorial | 2014 |
| Hartham Park Bath Stone Limited | Mining & quarrying | 2014 |
| Hartington Grove Investments Limited | Financial services | 2020 |