| Hornets Combat Ltd | Chatham | 2024 |
| Hornsby House Educational Trust | London | 1988 |
| Hornsea Youth CIC | Hornsea | 2026 |
| Horris Hill Foundation | Knutsford | 1957 |
| Horse & Cherry Limited | London | 2022 |
| Horse & Heart Community CIC | Mildenhall | 2026 |
| Horsebridge Arts and Community Centre | Kent | 2003 |
| Horseed Ltd | Hayes | 2025 |
| Horsell Childcare Limited | Maidenhead | 2023 |
| Horsell Educational Support Limited | Maidenhead | 2026 |
| Horseman Bruce Associates Ltd | Torquay | 2017 |
| Horsemanship for Health UK CIC | Teignmouth | 2016 |
| Horsemanship Heroes Community Interest Company | Swindon | 2025 |
| Horsemanship Training Limited | Gloucester | 2024 |
| Horses & Humanity Community Interest Company | Newcastle Upon Tyne | 2023 |
| Horses and Courses Limited | Bedford | 1999 |
| Horses for Happiness and Health CIC | Carlisle | 2025 |
| Horsewyse C.I.C | Aylesbury | 2009 |
| Horsey & Mcdonald CIC | London | 2024 |
| Horsfall Associates Ltd | Kingston Upon Thames | 2012 |
| Horsfall Education Ltd | Caterham | 2017 |
| Horsforth Hall Park Cricket Club C.I.C. | Bradford | 2025 |
| Horsforth School | Leeds | 2011 |
| Horsham Dyslexia Assessments Ltd | Horsham | 2024 |
| Horsham Learning Alliance | Horsham | 2025 |
| Horsham Learning Hub Ltd | Liphook | 2007 |
| Horsham Mixed Martial Arts Academy Limited | Horsham | 2019 |
| Horsham Montessori Limited | Ashford | 2002 |
| Horsham Sports Services Ltd | Horsham | 2020 |
| Horsham Swim School Limited | Worthing | 2017 |
| Horti-Roots CIC | Glasgow | 2025 |
| Horticultural Correspondence College Limited | Holsworthy | 1997 |
| Horticultural Training College Limited | Holsworthy | 1999 |
| Horticulture Exercise Arts and Life CIC | Birmingham | 2024 |
| Horton Barrow Limited | Crediton | 2019 |
| Horton Establishments Ltd | Hull | 2000 |
| Horton Pathways Limited | Smethwick | 2019 |
| Horwich Day Nursery Limited | Bolton | 2017 |
| Horyaal Hive CIC | Southall | 2025 |
| Horyaal Tutors Limited | London | 2012 |
| Hosel Club Ltd | Peterborough | 2025 |
| Hoshi KC Limited | Slough | 2026 |
| Hoskins Healthcare Limited | Birmingham West Midlands | 1991 |
| Hospice Care Kenya Limited | London | 2011 |
| Hospitality Inn-Training Ltd | Loxwood | 2021 |
| Hospitality Language Technology Ltd | London | 2025 |
| Hospitality Pathways Limited | Eastbourne | 2024 |
| Hospitality Recruit Education Limited | London | 2025 |
| Hospitality Training Solutions Limited | Morecambe | 2016 |
| Hospitality-Connect Limited | Manchester | 2025 |
| Hospitality.Scot Limited | Motherwell | 2023 |
| Hospitallers of Saint Thomas of Canterbury Ltd | Corby | 2024 |
| Hospovin Limited | Bedford | 2023 |
| Host Academy PLC | Glasgow | 2009 |
| Host Family UK Ltd | Buckley | 2019 |
| Host London Limited | London | 2019 |
| Hosted by Movement Education Limited | Harrogate | 2019 |
| Hostert Training and Consultancy Ltd | London | 2013 |
| Hostile Environment Training Limited | Eastleigh | 2013 |
| Hot Chocolate Trust | Dundee | 2010 |
| Hot Girl Boxing CIC | London | 2026 |
| Hot JAM Music CIC | Aberdare | 2020 |
| Hot JAM Studios Ltd | Bridgend | 2022 |
| Hot Spot Youth | Margate | 2011 |
| Hot Training Limited | Southport | 2016 |
| Hotdigital Community CIC | Clapton | 2025 |
| Hotdog Driving Limited | Eastbourne | 2025 |
| Hoteliers College Ltd | Cardiff | 2022 |
| Hotpod Yoga Guildford Ltd | Reading | 2023 |
| Hotshots Coaching CIC | Liverpool | 2022 |
| Hotshots Coaching North West Ltd | Liverpool | 2025 |
| Hotshots Sporting Group Ltd | London | 2025 |
| Hotshots Tennis Academy Limited | Edinburgh | 2021 |
| Hotshotz Inclusive Tennis C.I.C. | Maidstone | 2025 |
| Hotshotz Tennis Ltd | Maidstone | 2024 |
| Hott.Studio CIC | Birmingham | 2024 |
| Hotwells Children's House Limited | Bristol | 2024 |
| Hotwheelz Car & Motorcycle Training Limited | Liverpool | 2022 |
| Houghton Training Associates Ltd | Newton Abbot | 2025 |
| Hounsdown School | Southampton | 2011 |
| Hounslow Education Partnership Limited | Feltham | 2018 |
| Hounslow Language Service Ltd | Romford | 2010 |
| Hourglass Environment Limited | Todmorden | 2008 |
| House Cricket Academy Limited | Hounslow | 2021 |
| House Mill Trust Ltd | Bromley By Bow | 1985 |
| House Music Academy Ltd | London | 2023 |
| House of Acts C.I.C. | London | 2023 |
| House of ADV Ltd | Epsom | 2025 |
| House of Aesthetics Academy Empower CIC | London | 2025 |
| House of Art and Culture CIC | Manchester | 2023 |
| House of BB Limited | Solihull | 2021 |
| House of Beauty Training Academy Limited | Liverpool | 2022 |
| House of Blanche Limited | London | 2025 |
| House of Bombaka (HOB) Limited | Swansea | 2022 |
| House of Brows Training Academy Limited | Waltham Abbey | 2021 |
| House of Burlesque Ltd | London | 2010 |
| House of Burlesque Touring Ltd | London | 2012 |
| House of Canaan | Aberdeen | 2025 |
| House of Comfort CIC | Brierley Hill | 2026 |
| House of Contemporary Art / Ukraine Limited | London | 2024 |