| Healthcare Learning Solutions Limited | Brackley | 2024 |
| Healthcare Locum Services Ltd | Manchester | 2020 |
| Healthcare Plus Homecare Services Ltd | Kilmarnock | 2022 |
| Healthcarewizard Ltd | London | 2024 |
| Healthcomms Consulting Ltd | London | 2010 |
| Healthflix Ltd | London | 2021 |
| Healthguard Solutions Limited | Stockton-On-Tees | 2025 |
| Healthicon Solutions Limited | Edgware | 2023 |
| Healthplus Innovations Limited | Witney | 2024 |
| Healthplusvitality Ltd | London | 2025 |
| Healthqare Ltd | London | 2020 |
| Healthrx Ltd | Lowestoft | 2018 |
| Healthvia System Limited | Farnborough | 2025 |
| Healthwatch Bucks Limited | High Wycombe | 2013 |
| Healthwatch Herefordshire | Hereford | 2017 |
| Healthwatch Hillingdon | Uxbridge | 2013 |
| Healthwatch Leeds Community Interest Company | Leeds | 2015 |
| Healthwatch Manchester | Manchester | 2013 |
| Healthwatch Norfolk | Wymondham | 2013 |
| Healthwatch Rochdale Limited | Rochdale | 2013 |
| Healthwatch Salford | Manchester | 2015 |
| Healthwatch Stockport Limited | Stockport | 2013 |
| Healthwatch Wakefield | Wakefield | 2015 |
| Healthwatch Warwickshire C.I.C. | Leamington Spa | 2012 |
| Healthwatch Worcestershire | Pershore | 2013 |
| Healthy Heel Ltd | Watford | 2025 |
| Healthy Legacy Creators Ltd | London | 2025 |
| Healthy Life Course Ltd | London | 2023 |
| Healthyhedgehogs Ltd | London | 2025 |
| Healtogether CIC | London | 2020 |
| Healy Marine Company Limited | Grimsby | 1993 |
| Heart Educational Consultancy Services Ltd | West Bromwich | 2021 |
| Heart of Gold Homecare Ltd | Bolton | 2021 |
| Heart of Home (HOH) Limited | Rhyl | 2023 |
| Heart of Home Live in Limited | Ilford | 2026 |
| Heart to Heart Home Care and Cleaning Limited | Chichester | 2024 |
| Heartbeat Medical Ltd | Warrington | 2025 |
| Heartbeat Training Ltd | Warrington | 2022 |
| Heartland Health Limited | Dartford | 2026 |
| Hearts Business Consultancy Ltd | Whitstable | 2026 |
| Heat Pump Federation | Faversham | 2020 |
| Heaton Podiatry Ltd | Bolton | 2023 |
| Heaven Care Limited | London | 2021 |
| Heavenly Touch Care Limited | Nottingham | 2022 |
| Hecares Supported Accommodation Services Ltd | Southend-On-Sea | 2023 |
| Hedaliya Ltd | Pontypridd | 2020 |
| Hedgiehealthcare Ltd | South Croydon | 2020 |
| Hegarty Education Ltd. | Stockton On Tees | 2021 |
| Helagon Ltd | Yeovil | 2020 |
| Helen Healthcare Agency Ltd | Belfast | 2021 |
| Helen Redhead Consultancy Limited | Bishop Auckland | 2025 |
| Helen Shea Ltd | Newton Abbot | 2020 |
| Helios Care Ltd | Alton | 2025 |
| Helios Health Support Ltd | Aberdeen | 2021 |
| Hello Happiness Ltd | Manchester | 2019 |
| Helm Fire Protection Ltd | Waterlooville | 2021 |
| Helm Labs Ltd | St. Neots | 2025 |
| Help & Wellbeing Ltd | Manchester | 2021 |
| Help and Safety at Work Limited | Wellingborough | 2003 |
| Help for YOU UK Limited | Preston | 2009 |
| Help Humanitarian Worldwide | London | 2022 |
| Helpful Hearts Limited | Stoke-On-Trent | 2021 |
| Helping OUR Future UK Limited | Cardiff | 2019 |
| HELPS7/24 Ltd | Ilford | 2025 |
| Helsea Care Ltd | Leicester | 2025 |
| Hempfire UK Ltd | Cardiff | 2026 |
| Henry Care Limited | Greenhithe | 2021 |
| Henrydivine Company Limited | Enfield | 2018 |
| Henville Care Limited | London | 2022 |
| Hercules High Ways Ltd | London | 2024 |
| Heritage Care Associates Ltd | London | 2023 |
| Heritage Childrens Care Home Ltd | Hendon | 2023 |
| Heritage Healthcare Trafford and Cheshire Ltd | Altrincham | 2020 |
| Heritage in Hope CIC | London | 2020 |
| Heritage One Ltd | London | 2025 |
| Hermalinda 1 Ltd | Bromley | 2022 |
| Hero Carers Limited | London | 2018 |
| Hero First AID Ltd | London | 2023 |
| Hero of Health Ltd | Sheffield | 2021 |
| Heron Consulting Scotland Limited | Glasgow | 2026 |
| Herrick Fire Limited | Lincoln | 2023 |
| Hertfordshire TM Training Ltd | Welwyn Garden City | 2019 |
| Hestia Fire Safety Ltd | Kirkcaldy | 2025 |
| Hestia Safety Limited | Dunstable | 2025 |
| Hewitt Homes Group Ltd | London | 2022 |
| HG Anaesthetics Limited | Aberdeen | 2025 |
| HGI Initiative Ltd | Mildenhall | 2026 |
| HGL Global Consultants Limited | Richmond | 2024 |
| HGV 06 Services Ltd | Cardiff | 2020 |
| HHB Consulting Ltd | Okehampton | 2017 |
| Hi-Tech Fire Engineering Limited | Sheffield | 1994 |
| Hibaology Limited | London | 2022 |
| Hidden Care Limited | London | 2023 |
| Hidden Pain Society CIC | London | 2024 |
| Hieronward Ltd | London | 2026 |
| High Class Care Ltd | Birmingham | 2021 |
| High Court Enforcement Officers Association Limited | Northwich | 2004 |
| High Court Writ Recovery Limited | Manchester | 2023 |
| High Peak Inspection Services Limited | Poulton-Le-Fylde | 2013 |
| High Spen Social Action CIC | Rowlands Gill | 2024 |