| Highfields Land Ltd | Construction | 2013 |
| Highview Associates Ltd | Professional & scientific | 2006 |
| Highway & Drainage Products Ltd | Extraterritorial | 2010 |
| Highway & Solar Solutions Limited | Construction | 2015 |
| Hilbrae Rescue Kennels | Professional & scientific | 2012 |
| Hills Roofing & Building Ltd | Construction | 2021 |
| Hillside Jerk Ltd | Wholesale & retail | 2024 |
| Hiltons Funeral Directors Ltd | Other services | 2022 |
| Hiltons of Birmingham Ltd | Other services | 2020 |
| Hinch Direct Ltd | Transport & logistics | 2026 |
| Hins Holdings Limited | Financial services | 2026 |
| Hippo Property Management Ltd | Real estate | 2025 |
| HIQ Construction & Residential Ltd | Construction | 2025 |
| HIQ Property Maintenance Limited | Administrative & support | 2025 |
| Histonian Ltd | Administrative & support | 2019 |
| Hitherbest Limited | Manufacturing | 1985 |
| HKH Group Homes Limited | Construction | 2022 |
| Hlmb Limited | Manufacturing | 2022 |
| HM Agri Trading Ltd | Wholesale & retail | 2026 |
| HMO Cleaning and Management Services Ltd | Administrative & support | 2021 |
| Hobson Paragon (UK) Limited | Wholesale & retail | 1982 |
| Hogus Ltd | Administrative & support | 2019 |
| Hold Upon Heart Limited | Manufacturing | 2014 |
| Hollingsworth & Co Limited | Professional & scientific | 2014 |
| Hollinswood Medical Ltd | Health & social care | 2020 |
| Hollinswood Property Holdings Ltd | Real estate | 2023 |
| Holloway Control Systems Limited | Manufacturing | 2009 |
| Holloway Properties (Midlands) Limited | Real estate | 2019 |
| Holstein UK | Other services | 1998 |
| Holt Homes Developments Ltd | Construction | 2024 |
| Holyhead Road Development Ltd | Construction | 2020 |
| Holyhead Road Estates Limited | Financial services | 2025 |
| Holywell Garage Services Limited | Manufacturing | 2008 |
| Holywell Lane Plants Ltd | Wholesale & retail | 2019 |
| Home Detailer Ltd | Construction | 2024 |
| Home Energy Improvements Ltd | Construction | 2021 |
| Home Farm and Livery Ltd | Agriculture & fishing | 2019 |
| Home Innovations Ltd | Construction | 2013 |
| Home Made Limited | Real estate | 2020 |
| Home Park (Preston) Residents Association Limited | Households | 2004 |
| Home VET Select Ltd | Professional & scientific | 2025 |
| Home-Start Telford & Wrekin | Health & social care | 2009 |
| Homebrook Air-Conditioning Limited | Construction | 2020 |
| Homegrown Care Ltd | Health & social care | 2020 |
| Homegrown Fitness Ltd | Arts & recreation | 2024 |
| Homeland Security Limited | Administrative & support | 2018 |
| Homes With Style Ltd | Construction | 2022 |
| Homewise (UK) Limited | Households | 1999 |
| Homros Limited | Real estate | 2024 |
| Honey BEE Management Ltd | Information & communication | 2008 |
| Honey Home Care Group Ltd | Health & social care | 2022 |
| Honved Ltd | Other services | 2020 |
| Hoofnhound Limited | Wholesale & retail | 2024 |
| Hook and FRY Ltd | Hospitality | 2025 |
| Hook House Management Ltd | Wholesale & retail | 2022 |
| Hoomes Furniture Limited | Wholesale & retail | 2015 |
| Hoopy Limited | Information & communication | 2014 |
| HOP and Vine Limited | Administrative & support | 2017 |
| Hope Psychotherapies Clinic Limited | Health & social care | 2015 |
| HOPE23 Pubco Ltd | Real estate | 2023 |
| Hopebrae Limited | Real estate | 2000 |
| Horizon Engineering Services Ltd | Professional & scientific | 2026 |
| Horizon Estate Holdings Limited | Financial services | 2025 |
| Horizon Legal Consultants Limited | Professional & scientific | 2025 |
| Horizon Mark Store Ltd | Wholesale & retail | 2025 |
| Horizons Estate Development Ltd | Real estate | 2019 |
| Horsehay Fabrications Limited | Construction | 2003 |
| Horsehay Limited | Real estate | 1987 |
| Horton Automatics Limited | Manufacturing | 1988 |
| Horton Build Co Ltd | Construction | 2025 |
| Horvus Ltd | Other services | 2018 |
| Hoshizaki Europe Limited | Hospitality | 1994 |
| Hothi Haulage Ltd | Transport & logistics | 2019 |
| Hothi Transport Ltd | Transport & logistics | 2018 |
| Hound About Town Ltd | Manufacturing | 2020 |
| House Martin Management & Design Limited | Construction | 2012 |
| House of Amarah Ltd | Manufacturing | 2025 |
| House of Evermore Events Ltd | Professional & scientific | 2026 |
| House of Heever Ltd | Wholesale & retail | 2019 |
| House of Snoozed Ltd | Real estate | 2026 |
| House of Sovereign Limited | Wholesale & retail | 2026 |
| House of Vineyard Ltd | Hospitality | 2023 |
| HOW? Media Limited | Professional & scientific | 2013 |
| Howard Wright Ltd | Financial services | 1981 |
| Howes Property Services (Telford) Ltd | Extraterritorial | 2014 |
| Howmet Fastening Systems Limited | Manufacturing | 1983 |
| HPL Accountancy & Business Services Ltd | Professional & scientific | 2023 |
| HRC Electrical Ltd | Construction | 2019 |
| HSR Autos Ltd | Wholesale & retail | 2026 |
| Hsygo Investments Ltd | Wholesale & retail | 2024 |
| HTF Developments Ltd | Real estate | 2022 |
| Hubken Ltd | Extraterritorial | 2019 |
| Hubnpatdriving School Ltd | Education | 2019 |
| Hudson Living Limited | Real estate | 2022 |
| Huetor Vega Ltd | Other services | 2019 |
| Hughes (Junction) and Sons Limited | Real estate | 1944 |
| Hughes Cleaning Limited | Administrative & support | 2025 |
| Hughes Plant Inspections and Repairs Limited | Manufacturing | 2021 |
| Hughes Transport Ltd | Transport & logistics | 2023 |
| Human Method Ltd | Other services | 2015 |