| HD Properties Group Limited | Construction | 2022 |
| HD Storage Solutions Limited | Transport & logistics | 2019 |
| Health & Diet Centres Limited | Wholesale & retail | 1986 |
| Health & Diet Group Limited | Professional & scientific | 1969 |
| Health-E-Financials Limited | Professional & scientific | 2013 |
| Healthcare Talent Providers Ltd | Administrative & support | 2025 |
| Healthy Life Solutions & Consultancy Limited | Wholesale & retail | 2019 |
| Heartsease Home and Pet Sitting Ltd | Administrative & support | 2025 |
| Heat Dance Competition and Events Limited | Education | 2024 |
| Heatbusters Ltd | Wholesale & retail | 2021 |
| Heather Rawlins Photography Limited | Professional & scientific | 2024 |
| Heating & Plumbing Solutions (Midlands) Limited | Construction | 2014 |
| Heavenly Cases Ltd | Wholesale & retail | 2022 |
| Height Safety Engineering Limited | Professional & scientific | 2016 |
| HEJ Care Solution Ltd | Health & social care | 2025 |
| Helios Health Group Ltd | Health & social care | 2020 |
| Hello Foody Limited | Hospitality | 2019 |
| Hello Mocktails Ltd | Manufacturing | 2019 |
| Helpday Limited | Real estate | 2025 |
| Helpful Care Limited | Health & social care | 2020 |
| Henly Electrical Limited | Construction | 2015 |
| Hennessy and Hennessy Ltd | Construction | 2017 |
| Hennessy Media Group Ltd | Information & communication | 2026 |
| Henno Ltd | Professional & scientific | 2024 |
| Henosis Masks Ltd | Manufacturing | 2020 |
| Henry's Day Nursery Limited | Education | 2017 |
| Hensons Court Management Limited | Households | 2006 |
| Herbert Machine Tools Limited | Professional & scientific | 2015 |
| Herbert Spares Limited | Other services | 2014 |
| Herberton Assets Ltd | Real estate | 2019 |
| Heritage & Modern Damp Solutions Ltd | Construction | 2025 |
| Heritage Antique Limited | Construction | 2026 |
| Heritage Crown Holdings Ltd | Financial services | 2026 |
| Hermitage Road Management Company Limited | Households | 2006 |
| Hewins Access Ltd | Administrative & support | 2026 |
| HEX Box Limited | Hospitality | 2024 |
| HEX Energy Ltd | Construction | 2015 |
| Hexagon Computers Limited | Information & communication | 1996 |
| Hexagon Document Solutions Ltd | Information & communication | 1991 |
| Hextalls Driver Solutions Limited | Transport & logistics | 2018 |
| HF Mechanical Ltd | Construction | 2026 |
| Hickman House Management Co Ltd | Households | 1999 |
| Hiddenhut Furniture Limited | Manufacturing | 2022 |
| High Altitude Solutions Ltd | Professional & scientific | 2023 |
| Higham Dispensing Services Limited | Health & social care | 2025 |
| Higham Lane School | Education | 2011 |
| Higham Properties Management Limited | Households | 2017 |
| Higham Services Limited | Administrative & support | 2022 |
| HIGHDRIVE360 Limited | Professional & scientific | 2011 |
| Hikmah Limited | Health & social care | 2017 |
| Hilltoppers Ltd | Health & social care | 2026 |
| Hiring Strategies Limited | Administrative & support | 2014 |
| Hive Hair Ltd | Other services | 2018 |
| HJW Roofing Ltd | Construction | 2013 |
| HKL Properties Ltd | Real estate | 2022 |
| Hkmmoniline Ltd | Wholesale & retail | 2017 |
| HLA Developments Limited | Administrative & support | 2024 |
| HLA Education Limited | Education | 2024 |
| HM Security Systems Ltd | Administrative & support | 2020 |
| HMY Trading Limited | Wholesale & retail | 2023 |
| HNF Metals Limited | Wholesale & retail | 2021 |
| HNS OT Consultancy Limited | Health & social care | 2023 |
| Hobbygarden Limited | Real estate | 1994 |
| Hobourn Engineering Limited | Professional & scientific | 1946 |
| Hofmann Precision Balancing Limited | Wholesale & retail | 2008 |
| Hold on Pain Ends CIC | Wholesale & retail | 2025 |
| Holdings of B & P Limited | Construction | 2024 |
| Holland & Barrett (Benelux) Limited | Professional & scientific | 2013 |
| Holland & Barrett Group Limited | Wholesale & retail | 1995 |
| Holland & Barrett Holdings Limited | Professional & scientific | 1996 |
| Holland & Barrett International Limited | Professional & scientific | 2002 |
| Holland & Barrett Limited | Professional & scientific | 1944 |
| Holland & Barrett Retail Limited | Wholesale & retail | 1992 |
| Hollingsworth Stonemasons Ltd | Construction | 2014 |
| Hollins Haulage Ltd | Transport & logistics | 2009 |
| Hollybush House Ltd | Construction | 1987 |
| Hollycroft Construction (Midlands) Ltd | Construction | 2022 |
| Hollycroft Partnership Limited | Real estate | 2024 |
| Hollytree Travel Limited | Administrative & support | 2019 |
| Holman's Haulage Ltd | Transport & logistics | 2016 |
| Holmes Property Management Ltd | Wholesale & retail | 2000 |
| Home & Garden Inspiration Ltd | Other services | 2025 |
| Home and Away Stays Ltd | Hospitality | 2021 |
| Home Delights Trading Ltd | Wholesale & retail | 2024 |
| Home Lettings 4 U Ltd | Households | 2018 |
| Home Space Gyms Ltd | Other services | 2022 |
| HOMEFIX4U Ltd | Manufacturing | 2024 |
| Homeleigh Limited | Real estate | 2001 |
| Homemerce Ltd | Wholesale & retail | 2021 |
| Homes 4 U (Nuneaton) Ltd | Real estate | 2020 |
| Homeserve Building Limited | Construction | 2017 |
| Homevibe Limited | Wholesale & retail | 2017 |
| Homewatch Property Solutions Limited | Financial services | 2025 |
| Honest Hub Ltd | Wholesale & retail | 2025 |
| Honey Crown BEE Limited | Health & social care | 2014 |
| Honeybee Flats Limited | Real estate | 1989 |
| Honeydew Healthcare Limited | Health & social care | 2014 |
| Honeydew Homes CIC | Hospitality | 2020 |
| Honeydew Transition to Independence Limited | Health & social care | 2018 |
| Hood Lane Farm Estates Limited | Hospitality | 2021 |