| Harmesha Limited | Professional & scientific | 2016 |
| Harmonic Fusion Foods Ltd | Manufacturing | 2024 |
| Harper & Wolf Ltd | Arts & recreation | 2020 |
| Harper LEE Enterprises Property Limited | Real estate | 2025 |
| Harriet Cummings Ltd | Information & communication | 2015 |
| Harrison Beale & Owen Management Services Limited | Professional & scientific | 2004 |
| Harrison Beattie Ltd | Real estate | 2010 |
| Harrison Window Cleaning Limited | Administrative & support | 2025 |
| Harrow Property Developments Limited | Real estate | 2019 |
| Harry Lightfoot Music Ltd | Information & communication | 2017 |
| Hassall Health Limited | Health & social care | 2024 |
| Hatchsafe Ltd | Administrative & support | 2025 |
| Hatfits a Terre Limited | Other services | 2024 |
| Hatton KOI Ltd | Wholesale & retail | 2023 |
| Hatton Planning Limited | Professional & scientific | 2021 |
| Havenbrook Stays Management Ltd | Real estate | 2025 |
| Hawkins & Hawkins Ltd | Financial services | 2022 |
| Hawthorn and Co Investments Ltd | Real estate | 2026 |
| Hawthorns Taverns Ltd | Hospitality | 2017 |
| HAY Barn Engineering Limited | Professional & scientific | 2017 |
| Hayashi Dining Ltd | Hospitality | 2025 |
| Haycock Property Holdings Limited | Financial services | 2024 |
| Haydu Ltd | Wholesale & retail | 2025 |
| Hayes Tubes Limited | Manufacturing | 2015 |
| Hayman Capital INT Ltd | Professional & scientific | 2016 |
| Hayojum Limited | Professional & scientific | 2026 |
| Hayward Agricultural Holdings Limited | Agriculture & fishing | 2019 |
| Hazelbray Limited | Professional & scientific | 1994 |
| Hazelmark Developments Limited | Extraterritorial | 2001 |
| HB Homes Ltd | Construction | 2025 |
| Hb&O Ltd | Professional & scientific | 2004 |
| Hb&O UK LLP | | 2018 |
| Hbcreative Print and Promotional Limited | Administrative & support | 2022 |
| HBG Ventures Ltd | Wholesale & retail | 2026 |
| HBI Falcon Holdings Limited | Financial services | 2020 |
| Hbot Studios Ltd | Health & social care | 2026 |
| Hcdr Community Ltd | Information & communication | 2020 |
| HD Electrical (Midlands) Limited | Construction | 2020 |
| HDH IT Limited | Information & communication | 2017 |
| HDK Property Limited | Real estate | 2020 |
| HDP Rentals Limited | Real estate | 2022 |
| HDR Service Ltd | Transport & logistics | 2017 |
| HE Heating Supplies Ltd. | Manufacturing | 2007 |
| HEADLIGHTS4U Ltd | Wholesale & retail | 2019 |
| Headline Touring Services Ltd | Administrative & support | 2025 |
| HEALTHCARE4KIDS Services Ltd | Health & social care | 2020 |
| Healthwatch Warwickshire C.I.C. | Public administration | 2012 |
| Heart of England Distribution Services Limited | Other services | 1992 |
| Hearth and Haven Limited | Real estate | 2024 |
| Hearts and Minds Medical Ltd | Health & social care | 2024 |
| Heatedwright Ltd | Construction | 2025 |
| Heath Farm Barn Limited | Extraterritorial | 2017 |
| Heath GAS Services Ltd | Construction | 2020 |
| Heath Home Stays Ltd | Real estate | 2024 |
| Heathcote Resourcing Ltd | Administrative & support | 2026 |
| Heathcote Ventures Limited | Information & communication | 2022 |
| Heavenly Baked Limited | Wholesale & retail | 2026 |
| Heedly Ltd | Professional & scientific | 2025 |
| Heeley Shields Property Management Ltd | Real estate | 2019 |
| Heer Express Limited | Transport & logistics | 2010 |
| Hehantrading Ltd | Wholesale & retail | 2025 |
| Helen Knee Ltd | Professional & scientific | 2025 |
| Helen Morton Consulting Limited | Professional & scientific | 2024 |
| Helen Taylor Aesthetics Ltd | Other services | 2015 |
| Helen Taylor Permanent Cosmetics Ltd | Extraterritorial | 2012 |
| Helga Foods Ltd | Hospitality | 2025 |
| Helicentre Aviation Limited | Transport & logistics | 2001 |
| Helios Consulting Ltd | Professional & scientific | 2022 |
| Heliosx Diagnostics Ltd | Health & social care | 2020 |
| Heliosx Energy Limited | Energy | 2023 |
| Heliosx Holdings Limited | Financial services | 2017 |
| Helix Automations Ltd | Information & communication | 2026 |
| Help 4 Psychology Services Limited | Health & social care | 2011 |
| Hemel Estates Limited | Real estate | 1994 |
| Hemingford (Coldhams Lane) Limited | Construction | 2017 |
| Hemingford (Witchford) Limited | Construction | 2018 |
| Hemingford Construction Ltd | Construction | 2020 |
| Hempath Ltd | Wholesale & retail | 2020 |
| HEN Hospitality Limited | Hospitality | 2026 |
| Henderson & Cole Ltd | Wholesale & retail | 2021 |
| Hendriksz Consulting Ltd | Professional & scientific | 2024 |
| Henney Property Limited | Real estate | 2019 |
| Henpor Limited | Professional & scientific | 2017 |
| Henry Investment Management Ltd | Extraterritorial | 2015 |
| Henry's of Harbury Management Company Limited | Households | 2017 |
| Henshaw Homes Ltd | Real estate | 2024 |
| Hensley House Management Company Limited | Households | 1999 |
| Henson King Engineering Ltd | Professional & scientific | 2013 |
| HER Next Chapter Ltd | Education | 2020 |
| Heretic.The Media Consultancy Limited | Professional & scientific | 2026 |
| Heritage Brew Ltd | Wholesale & retail | 2024 |
| Herstory Academy Limited | Education | 2026 |
| Hewitts Property Marketing Ltd | Administrative & support | 2023 |
| Hexcite Holdings Limited | Financial services | 2020 |
| Hexel Ltd | Information & communication | 2026 |
| Hickel Property Enterprises Ltd | Households | 2017 |
| High Catering Ltd | Hospitality | 2018 |
| High Efficiency Heating Services Ltd | Construction | 2006 |
| High Temperature Material Systems Limited | Manufacturing | 2021 |
| Highdown Trustees Limited | Extraterritorial | 2006 |