| Halliday Management Ltd | Professional & scientific | 2017 |
| Halt Developments Limited | Construction | 2025 |
| Hamelin Pest Limited | Manufacturing | 2019 |
| Hamiltonian Dynamics Ltd | Administrative & support | 2020 |
| Hamlett Carpentry Ltd | Construction | 2023 |
| Hamlyn Place Management Company Limited | Extraterritorial | 2017 |
| Hampton Bone Health Ltd | Health & social care | 2023 |
| Hampton Hire Limited | Hospitality | 2002 |
| Hampton Pathology Services Ltd | Health & social care | 2020 |
| Hancorn & Co Ltd | Financial services | 2025 |
| Hancorn Feeds Ltd | Manufacturing | 2025 |
| Hancorn Properties Limited | Real estate | 2015 |
| Handmade Company (UK) Limited | Wholesale & retail | 2007 |
| Hanford Associates Limited | Professional & scientific | 2019 |
| Hanmer Farm Holdings Ltd | Financial services | 2016 |
| Hanwell House Properties Ltd. | Hospitality | 2000 |
| Happy Rugby Ltd | Hospitality | 2023 |
| Happy Tears Wedding Co Ltd | Wholesale & retail | 2025 |
| Harbour Town Ltd | Real estate | 2026 |
| Hard Drive Media Limited | Information & communication | 2022 |
| Harewood END Growers Limited | Agriculture & fishing | 1999 |
| Harewood END Properties Limited | Construction | 2017 |
| Hargassner Biomass Heating Ltd | Wholesale & retail | 2018 |
| Hargrave Protective Solutions Ltd | Administrative & support | 2026 |
| Harper Developers Limited | Real estate | 2019 |
| Harper Upvc Products Limited | Manufacturing | 2002 |
| Harriet Robbins-Harrington Design Company Limited | Wholesale & retail | 2024 |
| Harris & Reading Ltd | Construction | 2005 |
| Harris Construction Contractors Ltd | Construction | 2014 |
| Harrison & Pope Limited | Manufacturing | 2014 |
| Harrison Empire Limited | Real estate | 2019 |
| Harrison FM Limited | Professional & scientific | 2012 |
| Harrison Properties (Hereford) Ltd | Real estate | 2020 |
| Harrow Park Automation Ltd | Manufacturing | 2010 |
| Hart Logistics Limited | Transport & logistics | 2012 |
| Harts Woodworking Ltd | Manufacturing | 2011 |
| Harvey Property Solutions (Bristol) Limited | Households | 2025 |
| Harvey Simon Flooring Ltd | Construction | 2024 |
| Hasler Engineering Developments Limited | Extraterritorial | 2010 |
| Hatched Homes Ltd | Real estate | 2020 |
| Hatterrall Lettings Limited | Real estate | 2026 |
| Haven Herefords | Agriculture & fishing | 1958 |
| Hawfinch Financial Services Limited | Financial services | 2006 |
| Hawk K9 Ltd | Wholesale & retail | 2025 |
| Hawkes Consultancy Ltd | Information & communication | 2025 |
| Hawkins Priday Holdings Ltd | Financial services | 2024 |
| Hawkins Priday Ltd | Professional & scientific | 2010 |
| Hawthorn Hay-On-Wye Ltd | Wholesale & retail | 2021 |
| HAY & District Dial-A-Ride | Transport & logistics | 2002 |
| HAY & District Sports and Community Association Limited | Arts & recreation | 1992 |
| HAY Accountancy Services Limited | Professional & scientific | 2021 |
| HAY Artisan Bakers Ltd | Manufacturing | 2024 |
| HAY Bar & Restaurant Ltd | Hospitality | 2026 |
| HAY Castle Trading Limited | Wholesale & retail | 2018 |
| HAY Cinema Bookshop Holdings Limited | Professional & scientific | 2002 |
| HAY Cinema Bookshop Limited | Wholesale & retail | 1989 |
| HAY Distillery Ltd | Manufacturing | 2018 |
| HAY Media Ltd | Other services | 2026 |
| HAY on WYE Developments Limited | Real estate | 2025 |
| HAY Post Services Limited | Wholesale & retail | 2022 |
| HAY Pride CIC | Education | 2021 |
| HAY Regenerative Soils CIC | Water & waste | 2022 |
| HAY Theatre CIC | Arts & recreation | 2013 |
| HAY Warren Limited | Extraterritorial | 2013 |
| Hay-On-Wye Tourist Bureau | Administrative & support | 1987 |
| Haybag Ltd | Wholesale & retail | 2024 |
| Hayes Automobiles Limited | Wholesale & retail | 2010 |
| Hayken PPM Ltd | Other services | 2019 |
| Haynes Estates Limited | Households | 1957 |
| Haywood Crushing Demolition Limited | Construction | 2014 |
| Hazel Business Consultancy Ltd | Administrative & support | 2026 |
| HB Electrical Services Hereford Ltd | Construction | 2024 |
| HBC Medical Limited | Health & social care | 2011 |
| HCA Catering (College Road) Ltd | Hospitality | 2020 |
| HCA Catering (Folly Lane) Ltd | Hospitality | 2020 |
| HCD Civils Ltd | Construction | 2019 |
| HCD Demolitions Limited | Construction | 2020 |
| HCD Plant Sales Limited | Wholesale & retail | 2020 |
| HCD Skips Limited | Water & waste | 2018 |
| HCS Educational Services Limited | Education | 2018 |
| HD4 Limited | Professional & scientific | 2024 |
| Healhq Studio Ltd | Health & social care | 2026 |
| Healing Herbs Limited | Manufacturing | 1988 |
| Health and ME Retreats Ltd | Hospitality | 2019 |
| Healthcare Capital Ltd | Health & social care | 2004 |
| Healthwatch Herefordshire | Public administration | 2017 |
| Heart of Mercia | Education | 2016 |
| Heartlove Homes Ltd | Real estate | 2025 |
| Hearwell Hearing Limited | Wholesale & retail | 2015 |
| Hearwell Limited | Wholesale & retail | 2015 |
| Heathdene Residents Company Limited | Real estate | 1984 |
| Hector Green Limited | Professional & scientific | 2011 |
| Hedonist Food Ltd | Manufacturing | 2011 |
| Heggie's Delicatessen Limited | Manufacturing | 2018 |
| Heggies of Hereford Limited | Wholesale & retail | 2000 |
| HEI Investment Ltd | Real estate | 2021 |
| Helen Wilson Consultancy Ltd | Administrative & support | 2018 |
| Heliflight (UK) Limited | Transport & logistics | 2012 |
| Hellencleaning Ltd | Administrative & support | 2023 |
| Hello RAW Limited | Wholesale & retail | 2024 |