| Harmony Care Group Limited | Enfield | 2024 |
| Harmony House Blackpool Limited | Blackpool | 2025 |
| Harmony Hub Behaviour Therapy Limited | St. Asaph | 2023 |
| Harmony to Care Training Solutions Ltd | Faringdon | 2024 |
| Harmony Wellness Respite Centres Limited | Wolverhampton | 2024 |
| Harmonyhealth Limited | Manchester | 2026 |
| Harmonyprime Limited | Stanmore | 2024 |
| Harnais Ltd | Sittingbourne | 2019 |
| Harrison O'Neill TM Ltd | Doncaster | 2024 |
| Harry & Archie Ltd | Morpeth | 2023 |
| Harry Scott Traffic Management Ltd Ltd | Blackpool | 2025 |
| Hartill Fire Prevention Ltd | Dudley | 2017 |
| Hartland Marketing Limited | Sevenoaks | 2023 |
| Hartlepool: Growing for Life CIC | Hartlepool | 2026 |
| Hartley Health Consultancy Ltd | Aylesbury | 2021 |
| Hartley Management Group Ltd | Sheffield | 2026 |
| Harveys&Jcm Limited | Bournemouth | 2023 |
| Harvist Associates Limited | Ashby-De-La-Zouch | 2012 |
| Harwood Fire Solutions Limited | Littlehampton | 2021 |
| Hasan Pharma Ltd | Manchester | 2025 |
| Haslemere Public Services Limited | Haslemere | 2018 |
| Hassocks Community Organisation | Burgess Hill | 2010 |
| Hatch Life CIC | Liverpool | 2025 |
| Hatcher Safety Consultancy Ltd. | Llanybydder | 2022 |
| Hatida Care Ltd | Northampton | 2025 |
| Haulm Ltd | Hove | 2020 |
| Havana Global College Ltd | Peterborough | 2021 |
| Have Investments CYF | Wrexham | 2025 |
| Haven Care Services Ltd | Sutton Coldfield | 2015 |
| Haven Healthcare Group Ltd | Mansfield | 2022 |
| Haven VA Ltd | Haslemere | 2025 |
| Havennacare C.I.C. | Wisbech | 2026 |
| Havenpoint Wellbeing Ltd | Chesterfield | 2026 |
| Havering Healthwatch C.I.C. | Romford | 2013 |
| Havilah Discovery Care Services Limited | Dartford | 2024 |
| Havilla Social Care Ltd | Newcastle Upon Tyne | 2020 |
| Hawker Hunter Aviation Limited | Wokingham | 2000 |
| Hawkmoor Limited | Weybridge | 1991 |
| Hawks Construction UK Ltd | London | 2019 |
| Hawkwatch Health Limited | North Finchley | 2019 |
| Hawthorne Fire Consultancy Ltd | Banbury | 2023 |
| HAY Care Recruitment and Training Limited | Walsall | 2022 |
| Hayat Humanitarian AID | Luton | 2020 |
| Hayat-Lifeline Community Ltd | West Drayton | 2022 |
| Hayes Fire Services Ltd | Basildon | 2026 |
| Hayes Medical and Rescue Ltd | Biggin Hill | 2024 |
| Hayesdale Fire Protection Ltd | Wellingborough | 2025 |
| Haytan Health Care Services Ltd | Chelmsford | 2022 |
| Hayward Fire Solutions Limited | Abingdon | 2025 |
| Haze Safety Limited | Fleetwood | 2023 |
| Hazel Oak Family Services Ltd | Solihull | 2020 |
| HB Fire Ltd | Rushden | 2025 |
| HB Fire Protection Ltd | Rushden | 2025 |
| HB Strategy Ltd | Great Yarmouth | 2022 |
| Hbba Children's & Young People's Services Ltd | Birmingham | 2019 |
| HBC Care Services Ltd | Antrim | 2024 |
| Hcare Olga Limited | Sheffield | 2018 |
| Hcbe-Uk | Maidstone | 2025 |
| Hceo Ltd | Northampton | 2021 |
| HCW Recovery Limited | Manchester | 2026 |
| HD Fire and Security Group Ltd | Paisley | 2023 |
| HDC Admin Travel Ltd | Wolverhampton | 2025 |
| HDM Safety Limited | Hull | 2024 |
| Heal Fast Limited | Watford | 2025 |
| Heal-I-D Counselling Limited | Chatham | 2025 |
| Healing CIC | Derby | 2025 |
| Healing Embrace C.I.C. | London | 2024 |
| Healing Hands Healthcare Limited | Cardiff | 2024 |
| Healing Pathways Haven CIC | Willenhall | 2026 |
| Health Abundance Limited | Wednesbury | 2022 |
| Health and Holistics Ltd | Darvel | 2017 |
| Health and Safety Consulting Limited | Belfast | 2019 |
| Health and Safety Development Ltd | Birmingham | 2018 |
| Health and Social Ltd | Chelmsford | 2022 |
| Health Behaviour Group | Wells | 2006 |
| Health Care & Support Ltd | Telford | 2022 |
| Health Care Academy London Ltd | London | 2024 |
| Health Care Services and Support Ltd | Birmingham | 2024 |
| Health CEO Ltd | Dudley | 2024 |
| Health Counsel Limited | Brighton | 2023 |
| Health First Everything Next Ltd | Nottingham | 2016 |
| Health FLO Limited | Bury St. Edmunds | 2024 |
| Health Monitor Ltd | Ilford | 2020 |
| Health N More Ltd | Halesowen | 2022 |
| Health NS Ltd | Leicestershire | 2023 |
| Health Safety Care Limited | Walsall | 2025 |
| Health Salvation Ltd | Orpington | 2025 |
| Health Spring Ltd | London | 2025 |
| Health Training Online Limited | Brentwood | 2013 |
| Health Vault Ltd | Kington | 2020 |
| HEALTH310 Ltd | Huddersfield | 2023 |
| HEALTH360 Limited | Nottingham | 2024 |
| HEALTHASSURED1 Limited | Newcastle Upon Tyne | 2025 |
| Healthbiome Ltd | London | 2021 |
| Healthcademia UK Limited | Manchester | 2024 |
| Healthcare Aesthetics Limited | London | 2023 |
| Healthcare Artificial Intelligence Solutions Limited | Oxford | 2026 |
| Healthcare Fire Safety Services Ltd | Basildon | 2023 |
| Healthcare Installations Ltd | Newport | 2018 |
| Healthcare International Limited | London | 2021 |