| Heathside, Weybridge Management Limited | Households | 1965 |
| Heating Repairs Ltd | Construction | 2019 |
| Heatley Gardens Management Company Limited | Households | 2007 |
| Heaton Grange (Bolton) Management Company Limited | Households | 2007 |
| Heaven & Sky Limited | Hospitality | 2019 |
| Heaven Glow Ltd | Wholesale & retail | 2026 |
| Heavenly Hair and Scalp Limited | Health & social care | 2013 |
| Heavenly Nails Beauty Ltd | Other services | 2026 |
| Heavensake Limited | Real estate | 2010 |
| Heavy Drip Fashion Ltd | Wholesale & retail | 2018 |
| Heavy Metal Gym Group Limited | Manufacturing | 2023 |
| Hebflex Ltd | Construction | 2019 |
| Hebrides Investments NO. 1 Limited | Administrative & support | 2011 |
| Hecatoncheires Limited | Professional & scientific | 2019 |
| Hedge END Place Management Company Limited | Households | 2019 |
| Hedgerley Lane (Beaconsfield) Management Company Limited | Households | 2008 |
| Hedgerow Trading Ltd | Wholesale & retail | 2022 |
| Hedgerows (Exhall) Management Company Limited | Households | 2003 |
| Hedgerows (Horam) Management Company Limited | Households | 2023 |
| Hedges Fine Art Ltd | Wholesale & retail | 2022 |
| Hedidit Property Limited | Real estate | 2024 |
| Hedley Court Residents RTM Company Ltd | Households | 2024 |
| Heel Star Ltd | Manufacturing | 2025 |
| Heidi Shanks Cleaning Limited | Administrative & support | 2019 |
| HEK5 Enterprise Limited | Wholesale & retail | 2024 |
| Hekate Consulting Ltd | Professional & scientific | 2024 |
| Held and Healed Ltd | Professional & scientific | 2025 |
| Helena Macris Ltd | Other services | 2024 |
| Helix Construction Ltd | Construction | 2023 |
| Hellahigh Music Group Ltd | Manufacturing | 2021 |
| Helle Skovby French Properties Ltd | Real estate | 2018 |
| Hello Gorgeous Beauty Ltd | Other services | 2015 |
| Hello Gorgeous Studios Ltd | Professional & scientific | 2013 |
| Hello I AM Stuart Ltd | Professional & scientific | 2018 |
| Hello Travel International UK Ltd | Administrative & support | 2025 |
| Hello World 786 Ltd | Wholesale & retail | 2025 |
| Helmburg Flat Management Company Limited | Households | 1977 |
| Helmshore Investments Limited | Financial services | 2002 |
| Help 1 to 1 Limited | Education | 2015 |
| Helping AAT Limited | Hospitality | 2023 |
| Helping Hotline Ltd | Transport & logistics | 2021 |
| Helsby Lincoln Green Limited | Households | 2015 |
| Helston Management Limited | Professional & scientific | 2009 |
| Heltego Ltd | Information & communication | 2025 |
| Heltgreen Property Management Limited | Households | 2000 |
| Helyx Management Consulting Ltd. | Professional & scientific | 2016 |
| Hemeema Property Limited | Real estate | 2017 |
| Hemeema Trading Limited | Construction | 2019 |
| Hemstede Management Company Limited | Households | 1967 |
| Henderson Biomedical Limited | Manufacturing | 2000 |
| Hengo Group Investment Limited | Construction | 2023 |
| Hengrove Enterprises Limited | Wholesale & retail | 2013 |
| Henley Park Management Limited | Households | 2002 |
| Henley Road Flat Management Company Limited | Households | 1996 |
| Henmerc Enterprises UK Ltd | Health & social care | 2017 |
| Henrietta Court Flats Limited | Households | 1985 |
| Henrietta Hitchcock Ltd | Information & communication | 2025 |
| Henry Court (Peterborough) Limited | Households | 1991 |
| Henry Gibson Ltd | Information & communication | 2022 |
| Henry Lodge Management Co. Limited | Households | 1982 |
| Henry Riley Consulting Limited | Professional & scientific | 2005 |
| Henry Riley LLP | | 2008 |
| Henry's Building Services Limited | Construction | 2021 |
| Henry's R Solutions Limited | Information & communication | 2010 |
| Henshi Retail Ltd | Wholesale & retail | 2013 |
| Henson IT Solutions Limited | Information & communication | 2016 |
| Henwick View Management Company Ltd | Households | 2016 |
| HER Design Limited | Wholesale & retail | 2010 |
| Hera Foods Worcester Ltd | Hospitality | 2017 |
| Herba Naturalle Limited | Health & social care | 2014 |
| Herbal Goddess Ltd | Wholesale & retail | 2024 |
| Herchwear Ltd | Manufacturing | 2021 |
| Hercules Models Ltd | Other services | 2023 |
| Here 4 U Publishing & Services (UK) Ltd | Health & social care | 2007 |
| Here for the Drama Ltd | Arts & recreation | 2021 |
| Here for the Events Ltd | Arts & recreation | 2024 |
| Here to Teach Ltd | Education | 2017 |
| Heritage and Posterity Ltd | Information & communication | 2025 |
| Heritage Court (Sutterton) Management Company Limited | Households | 2020 |
| Heritage Park (Blocks a, B, C, D, E, F, G & H) Management Company Limited | Households | 1998 |
| Heritage Park (Blocks J & Y) Management Company Limited | Households | 2001 |
| Heritage Park (Blocks K, L, M, N, P & Q) Management Company Limited | Households | 1998 |
| Heritage Park (Blocks R & S) Management Company Limited | Households | 1998 |
| Heritage Park (Blocks T) Management Company Limited | Households | 2001 |
| Heritage Park (Blocks U, X, W, V & V1) Management Company Limited | Households | 2001 |
| Heritage Park (Garstang) MAN Co Ltd | Households | 2022 |
| Heritage Park (Penymynydd) Management Company Limited | Households | 2013 |
| Heritage Park Block B (SW17 6DA) Limited | Extraterritorial | 2014 |
| Heritage Park Block E (SW17 6DE) Ltd | Extraterritorial | 2014 |
| Heritage Park Block K Freehold Company Limited | Households | 2017 |
| Heritage Park Block Q (SW17 6ED) Limited | Households | 2014 |
| Heritage Park Block X (SW17 6AU) Limited | Extraterritorial | 2019 |
| Heritage Park Block Y (SW17 6AJ) Ltd | Extraterritorial | 2015 |
| Heritage Park Block Y2 (SW17 6AS) Limited | Extraterritorial | 2018 |
| Heritage Park Residents Association (NO.2) Limited | Households | 2001 |
| Heritage Park Residents Association Limited | Households | 1998 |
| Heritage Park V Freehold Ltd | Extraterritorial | 2015 |
| Heritage Park V1 Freehold Ltd | Extraterritorial | 2015 |
| Heritage Roofing & Property Maintenance Ltd | Construction | 2026 |
| Heritage Salon Limited | Other services | 2014 |