| Halbro Property Investments Limited | Real estate | 2020 |
| Halbro Property Limited | Real estate | 1999 |
| Halbro Sportswear Holdings Limited | Professional & scientific | 2012 |
| Halbro Sportswear Limited | Wholesale & retail | 1988 |
| Halco 1 Limited | Administrative & support | 2024 |
| Halcyon Care (Merseyside) Ltd | Administrative & support | 2024 |
| Halcyon Care (South Yorkshire) Ltd | Administrative & support | 2024 |
| Halcyon Financial Planning Ltd | Financial services | 2018 |
| Halcyon Holidays Limited | Real estate | 2013 |
| Haldane Consultancy Ltd | Other services | 2024 |
| Hale 18 Limited | Real estate | 2024 |
| Half Acre Holdings Limited | Real estate | 2024 |
| Hali Flooring Ltd | Wholesale & retail | 2025 |
| Halifax Rlfc (Trading) Ltd. | Arts & recreation | 2007 |
| Haliwell OFF Licence Limited | Wholesale & retail | 2023 |
| Hall School Wimbledon Limited | Financial services | 2018 |
| Hallam Solutions Ltd | Wholesale & retail | 2019 |
| Hallelujah Holdings Worldwide Limited | Financial services | 2020 |
| Halliday Lettings Ltd | Real estate | 2021 |
| Halliwell Car Wash & Garage Ltd | Administrative & support | 2025 |
| Halliwell Construction Ltd | Construction | 2023 |
| Halliwell Fittings Ltd | Manufacturing | 2024 |
| Halliwell Management Company Limited | Real estate | 1996 |
| Halliwell Motors Limited | Wholesale & retail | 2024 |
| Halliwell Partnerships Limited | Professional & scientific | 2014 |
| Halliwell Pound Plus Limited | Wholesale & retail | 2024 |
| Halliwell Trading Ltd | Wholesale & retail | 2023 |
| Halliwellcars Limited | Wholesale & retail | 2025 |
| Halliz Trading Ltd | Wholesale & retail | 2026 |
| Halls Drycleaning Co. Limited | Other services | 1984 |
| Hallsmore Ltd | Wholesale & retail | 2023 |
| Halo & Co Properties Ltd | Real estate | 2022 |
| Halo Care Limited | Health & social care | 2022 |
| Halo Childcare Limited | Health & social care | 2022 |
| Halo Cleaning Group Ltd | Administrative & support | 2025 |
| Halo Events-Uk Ltd | Administrative & support | 2019 |
| Halo Facilities Management Limited | Administrative & support | 2016 |
| Halo Group Ltd. | Professional & scientific | 2015 |
| Halo Manchester Limited | Real estate | 2022 |
| Halo Wholesale Ltd | Wholesale & retail | 2024 |
| Halsall Acquisitions Limited | Real estate | 2024 |
| Halsall Group Limited | Professional & scientific | 2015 |
| Halsall Investments Ltd | Real estate | 2009 |
| Halsall Planning Solutions Limited | Professional & scientific | 2026 |
| Halsall Projects Ltd | Administrative & support | 2021 |
| Halsall Technology Limited | Information & communication | 2020 |
| Halsall Windows Limited | Construction | 2002 |
| Halsey Enterprises Limited | Information & communication | 2013 |
| Halstonproperties Limited | Real estate | 2025 |
| Halstonvaleproperties Ltd | Real estate | 2025 |
| Haltex (UK) Limited | Wholesale & retail | 2013 |
| Hamari Agency Ltd | Other services | 2017 |
| Hambledon Mill (Accrington) Management Company Limited | Households | 2015 |
| Hamer Capital Ventures Limited | Financial services | 2019 |
| Hamer Inc. Ltd | Hospitality | 2007 |
| Hamif Trading Ltd | Administrative & support | 2023 |
| Hamilton Actuarial Ltd | Professional & scientific | 2025 |
| Hamilton Place (Bury) Management Company Limited | Households | 2004 |
| Hamilton Rest Home Ltd | Health & social care | 2023 |
| Hamiltons Prestige Limited | Wholesale & retail | 2019 |
| Hamish Taylor Events Ltd | Professional & scientific | 2024 |
| Hamlet Building Services Limited | Construction | 2019 |
| Hamlet the Film Limited | Information & communication | 2014 |
| Hammerhead Technologies Ltd | Information & communication | 2022 |
| Hammond Bespoke Interiors Ltd | Construction | 2023 |
| Hampson Composites Limited | Manufacturing | 2000 |
| Hampstead Rise Ltd | Information & communication | 2025 |
| Hampta Ltd | Information & communication | 2026 |
| Hamza Auto Workshop Limited | Wholesale & retail | 2025 |
| Hamza Constructions Limited | Construction | 2025 |
| Hamza Paints Limited | Construction | 2024 |
| Hamzaclothing Limited | Manufacturing | 2025 |
| Hamzah Propertier Limited | Real estate | 2025 |
| Hamzah Sweets & Bakers Limited | Hospitality | 2016 |
| Hamzane Homes Ltd | Real estate | 2024 |
| Hana Enterprises Ltd | Real estate | 2024 |
| Hanabethda Ventures Ltd | Wholesale & retail | 2025 |
| Handcap Services Limited | Health & social care | 2015 |
| Handconsultant.Com Ltd | Health & social care | 2016 |
| Handcrafted Clay Ltd | Manufacturing | 2025 |
| Handles & Hinges Ltd | Extraterritorial | 2005 |
| Handles & Hinges Upvc Maintenance Ltd | Wholesale & retail | 2005 |
| Handley Properties Ltd | Real estate | 2024 |
| Handowalia Properties Limited | Real estate | 2023 |
| Handrail Creations Limited | Manufacturing | 2014 |
| Hands-On Computer Solutions Ltd. | Manufacturing | 1990 |
| Handy & Tidy Solutions Ltd | Professional & scientific | 2025 |
| Handy Little ME Limited | Other services | 2024 |
| Handywoman Limited | Administrative & support | 2026 |
| Hanley Walsh Holdings Ltd | Administrative & support | 2022 |
| Hann Trading Services Limited | Wholesale & retail | 2009 |
| Hanna & Co Limited | Information & communication | 2010 |
| Hannacott SA Limited | Wholesale & retail | 2019 |
| Hannan Blinds Limited | Wholesale & retail | 1998 |
| Hans PVT Limited | Wholesale & retail | 2025 |
| Hans Retail Group Ltd | Wholesale & retail | 2023 |
| Hansford Business Services Limited | Professional & scientific | 2014 |
| Hansford Grace Accounting Services Limited | Professional & scientific | 2017 |
| Hanson Window Cleaning Ltd. | Administrative & support | 2021 |
| Hanson's Electrical Solutions Ltd | Construction | 2026 |