| Hjdr Limited | Construction | 2000 |
| HJL Limited | Administrative & support | 2016 |
| Hjml Property Limited | Real estate | 2022 |
| Hjpk Events Ltd | Arts & recreation | 2025 |
| HJR Building Contractors Ltd | Real estate | 2025 |
| HJS Electrics Contractors Ltd | Construction | 2026 |
| HJS Family Investment Company | Financial services | 2025 |
| HJS Property Development Ltd | Real estate | 2025 |
| HJS Property Partners Limited | Construction | 2025 |
| HJW Carpentry Ltd | Construction | 2019 |
| HK Bristol Limited | Hospitality | 2019 |
| HK Chef Limited | Hospitality | 2020 |
| HK Interventions Limited | Health & social care | 2023 |
| HK Management Bristol Ltd | Hospitality | 2023 |
| HK Season Limited | Hospitality | 2024 |
| HKC Britol Limited | Hospitality | 2021 |
| HKF Consultant Services Limited | Professional & scientific | 2024 |
| HKF Jackson Limited | Construction | 2026 |
| HKP Construction Ltd | Construction | 2024 |
| HKS 31 Limited | Health & social care | 2015 |
| HKW Risk Management Ltd | Professional & scientific | 2016 |
| HL Analytics LLP | | 2011 |
| HL Plumbing and Heating Solutions Ltd | Construction | 2018 |
| HL Renewals LLP | | 2009 |
| HLH Property Services Ltd | Real estate | 2019 |
| HLP 1862 LLP | | 2021 |
| HM Carpentry (Bristol) Ltd | Construction | 2025 |
| HM Developments South West Ltd | Administrative & support | 2021 |
| HM King Holdings Limited | Financial services | 2025 |
| HMB International Limited | Professional & scientific | 1996 |
| HMC Aviation Ltd | Manufacturing | 2023 |
| HMH Express Limited | Transport & logistics | 2025 |
| HMH Property Doncaster Limited | Real estate | 2024 |
| Hmhl Limited | Professional & scientific | 2005 |
| HMO PW Property Management Limited | Construction | 2024 |
| HMS Rentals Limited | Administrative & support | 2017 |
| HMT Hire Ltd | Transport & logistics | 2024 |
| Hmworld Ltd | Information & communication | 2024 |
| HMZ Sales Ltd | Wholesale & retail | 2022 |
| HN Construction Services Limited | Construction | 2010 |
| HN Flooring Limited | Wholesale & retail | 2020 |
| HNA Mart Limited | Wholesale & retail | 2025 |
| Hnas Holding Ltd | Financial services | 2022 |
| Hnas Investments Ltd | Real estate | 2024 |
| HNC Services Ltd | Health & social care | 2022 |
| HNS Wholesale Ltd | Wholesale & retail | 2024 |
| HO Asset Management Limited | Administrative & support | 2002 |
| HO Asset Properties Management Limited | Administrative & support | 2013 |
| HO Shek Limited | Hospitality | 2017 |
| Hoama (Staplehurst) Ltd | Health & social care | 2022 |
| Hoama Group Ltd | Financial services | 2022 |
| Hoama MV Ltd | Health & social care | 2025 |
| Hoap Club Ltd | Wholesale & retail | 2021 |
| Hoard Dungeons Ltd | Arts & recreation | 2022 |
| Hoare Brothers Limited | Wholesale & retail | 2001 |
| Hoare LEA Europe Limited | Professional & scientific | 2008 |
| Hoare LEA Fire Limited | Professional & scientific | 1984 |
| Hoare LEA Holdings Limited | Financial services | 2009 |
| Hoare LEA LLP | | 2016 |
| Hoather and Daughters Ltd | Real estate | 2025 |
| HOB Lane Solar Farm Limited | Energy | 2022 |
| Hobbs Holdings Limited | Professional & scientific | 1987 |
| Hobbs House Bakery Limited | Manufacturing | 2003 |
| Hobbs Moor Veterinary Services Ltd | Professional & scientific | 2021 |
| Hobbs PGA Limited | Wholesale & retail | 2020 |
| Hobbs Properties Limited | Real estate | 1962 |
| Hobbs Property Agents Limited | Real estate | 2023 |
| Hobbs Roofing Contractors Ltd | Construction | 2022 |
| Hobbs Style Limited | Other services | 2019 |
| Hobbs-Hall Consulting Ltd | Administrative & support | 2015 |
| Hobbyist Software Limited | Information & communication | 2011 |
| Hobden & SON Limited | Transport & logistics | 2002 |
| Hobea Holistic Beauty Clinic Ltd | Other services | 2025 |
| Hobincu Trans Limited | Transport & logistics | 2020 |
| Hocken Limited | Real estate | 2016 |
| Hockenhull Consulting Limited | Real estate | 2013 |
| Hocklynn Limited | Manufacturing | 1975 |
| Hodge Associates Ltd | Construction | 2025 |
| Hodgetts Industrial Developments (Tamworth) Limited | Construction | 2015 |
| Hodgkin House Limited | Hospitality | 1963 |
| Hodgson Healthcare Planning Consultancy Ltd | Health & social care | 2019 |
| Hodgson Kearney Financial Services Limited | Financial services | 2004 |
| Hodson and Phillips Limited | Wholesale & retail | 1981 |
| Hodson Brokers Ltd | Financial services | 2018 |
| Hoffman Professional Solutions Ltd | Professional & scientific | 2025 |
| Hogan (Bristol) Ltd | Financial services | 2026 |
| Hogan Consultancy Services Limited | Professional & scientific | 2008 |
| Hogar Heating Limited | Construction | 2023 |
| Hogs 4 ALL Ltd | Hospitality | 2015 |
| Hohey Marketing Limited | Wholesale & retail | 2021 |
| Hoist Hire Holdings Limited | Administrative & support | 2017 |
| Hoist Hire Services Limited | Administrative & support | 1989 |
| Hoistway Ltd. | Manufacturing | 2001 |
| HOK Services Ltd | Information & communication | 2025 |
| Holadamholdings Ltd | Wholesale & retail | 2025 |
| Holan Barbers Ltd | Other services | 2023 |
| Holborn Property Services Limited | Real estate | 1997 |
| Holbrook Holdings Limited | Households | 2017 |
| Holbrook Homes Limited | Construction | 1988 |
| Holbrook Moran Limited | Real estate | 2005 |