| Himalayan Monal Ltd | Hospitality | 2021 |
| Himself Limited | Extraterritorial | 2006 |
| Hina Advisory Ltd | Health & social care | 2025 |
| Hina Bazaar Limited | Wholesale & retail | 2024 |
| Hina Kadri Limited | Health & social care | 2006 |
| Hind and Hart Ltd | Hospitality | 2026 |
| Hindel Limited | Real estate | 1999 |
| Hindle Property Investments Ltd | Real estate | 2015 |
| Hindmoor Aesthetics Limited | Other services | 2020 |
| Hinduja Global Solutions UK Limited | Administrative & support | 1995 |
| Hine Decorating Ltd | Construction | 2018 |
| Hinnigan Partners Ltd | Financial services | 2023 |
| Hinstor Ltd | Transport & logistics | 2025 |
| HIPS2KNEES Limited | Health & social care | 2014 |
| Hire Mini BUS London Ltd | Transport & logistics | 2025 |
| Hiren Electronics UK Ltd | Wholesale & retail | 2026 |
| Hireq Services Limited | Administrative & support | 2019 |
| Hirundo Studios Ltd | Information & communication | 2020 |
| HIS & Hairs Team Limited | Other services | 2012 |
| HIS Investments NW Ltd | Real estate | 2025 |
| HIT Papers Ltd | Manufacturing | 2022 |
| Hitaltech U.K. Limited | Wholesale & retail | 1996 |
| Hitchen Trading Ltd | Manufacturing | 2019 |
| Hitek Office Systems Limited | Manufacturing | 2001 |
| Hitianland UK Limited | Hospitality | 2024 |
| Hive Staffing Ltd | Administrative & support | 2022 |
| Hiverisk Limited | Professional & scientific | 2017 |
| HIY Services Ltd | Administrative & support | 2025 |
| HJ Preston Ltd | Wholesale & retail | 2019 |
| Hjalw Property Management (Warton) Ltd | Real estate | 2025 |
| HJG Media Limited | Extraterritorial | 2013 |
| HJH Utilities Ltd | Construction | 2019 |
| Hjjj LLP | | 2021 |
| HJM Aesthetics Ltd | Other services | 2024 |
| HJM Freight Limited | Transport & logistics | 2024 |
| HJP Property Management Limited | Real estate | 2021 |
| HJT Projects Hvacr Ltd | Construction | 2026 |
| HJT Projects Ltd | Construction | 2016 |
| HJW Digital Ltd | Information & communication | 2026 |
| HK Forensics Limited | Administrative & support | 2009 |
| HK Investments Limited | Construction | 2023 |
| Hkim Limited | Real estate | 2022 |
| HL Fire and Security Ltd | Administrative & support | 2022 |
| HL Property Investment and Management Limited | Real estate | 2025 |
| HLF Healthcare Ltd | Health & social care | 2021 |
| HLS Equine Therapy Ltd | Agriculture & fishing | 2022 |
| HM Medics Ltd | Health & social care | 2012 |
| HM Network Ltd | Information & communication | 2013 |
| HMD Ventures 2 Ltd | Hospitality | 2025 |
| Hmds Investments Ltd | Financial services | 2018 |
| HMG Automotive Limited | Wholesale & retail | 2019 |
| HMG Decor Ltd | Manufacturing | 2019 |
| Hmgbuilding Ltd | Construction | 2023 |
| HMI Healthcare Limited | Wholesale & retail | 2010 |
| HMJ Management Consultants Limited | Professional & scientific | 2022 |
| HMJ Recruitment Limited | Extraterritorial | 2018 |
| HMM Investments Ltd | Wholesale & retail | 2021 |
| Hmms Care Ltd | Health & social care | 2020 |
| HMO Pros Group Ltd | Households | 2020 |
| HMR Cleaning Ltd | Administrative & support | 2019 |
| HMY Drop Limited | Wholesale & retail | 2025 |
| Hmyk Holdings Ltd | Real estate | 2022 |
| HNH Properties (Leicestershire) Ltd | Hospitality | 2016 |
| HNV Building Developments Ltd | Construction | 2023 |
| HNV Medical Limited | Administrative & support | 2020 |
| HOB HEY Management Company Limited | Households | 2005 |
| HOB Preston Ltd | Hospitality | 2024 |
| Hobs Property Ltd | Real estate | 2024 |
| Hocaya Ltd | Real estate | 2011 |
| Hockey Coaching UK Ltd | Education | 2022 |
| Hodens Transport & Logistics Ltd | Transport & logistics | 2019 |
| Hodge & Wilson Ltd. | Health & social care | 2001 |
| Hodge Dent Ltd | Health & social care | 2021 |
| Hodge Joiners & Builders Ltd | Construction | 2019 |
| Hodge Projects Ltd | Real estate | 2023 |
| Hodgeson Services Limited | Professional & scientific | 2025 |
| Hodgin Properties Ltd | Real estate | 2026 |
| Hodgkiss Homes Ltd | Real estate | 2025 |
| Hodgson Electrical & Sons Limited | Extraterritorial | 2010 |
| Hodgson Equine Transport Limited | Transport & logistics | 2020 |
| Hodkinson Holdings Limited | Wholesale & retail | 2025 |
| Hodl Holdings Ltd | Financial services | 2024 |
| Hodson Homes (North West) Ltd | Construction | 2007 |
| Hoek Group UK Holdings Ltd | Financial services | 2024 |
| Hogarth Investments Ltd | Construction | 2026 |
| Hogarth Properties Ltd | Real estate | 2023 |
| Hogarth's Carpentry & Joinery Ltd | Manufacturing | 2025 |
| Hogarths Ltd. | Manufacturing | 1998 |
| Hogg Joinery Manufacturers Ltd | Construction | 2012 |
| Hoghton Brewery Limited | Wholesale & retail | 2013 |
| Hoghton Properties Limited | Real estate | 2017 |
| Hoghton Tower Limited | Arts & recreation | 1991 |
| Holbeck Homes (Cartmel) Limited | Construction | 2015 |
| Holburn Homes Ltd | Construction | 2021 |
| Holco Ltd | Real estate | 2021 |
| Holcombe Heights Limited | Extraterritorial | 2016 |
| Holden Group Management Limited | Financial services | 2017 |
| Holden Group Property Limited | Real estate | 2002 |
| Holden Land and Property Limited | Real estate | 2023 |
| Holden Legal UK Limited | Administrative & support | 2018 |