| High Speed Pharmacy Ltd | Wholesale & retail | 2015 |
| High Tide Yacht Charters Limited | Administrative & support | 2023 |
| High Wych Limited | Professional & scientific | 2010 |
| Highbank Property Management (Bowdon) Ltd | Real estate | 2016 |
| Highbury Software Limited | Professional & scientific | 2025 |
| Highcare Limited | Health & social care | 2010 |
| Highclere Limited | Professional & scientific | 2015 |
| Highclere Management Company Limited | Households | 1968 |
| Highcroft Hall and Villas Management Company Limited | Households | 2005 |
| Highemperor Ltd | Administrative & support | 2024 |
| Higher Enterprise Ltd | Professional & scientific | 2025 |
| Higher Ince Social Club Limited | Hospitality | 2015 |
| Highfield Consultancy Limited | Professional & scientific | 2016 |
| Highfield Mount Limited | Professional & scientific | 2022 |
| Highgate North Limited | Real estate | 2026 |
| Highgrove Alderley Edge (Management Company) Ltd | Real estate | 2002 |
| Highlands Security Consultants Limited | Professional & scientific | 2022 |
| Highstyle Design Upholstery Limited | Administrative & support | 1987 |
| Hijra Law Firm Ltd | Information & communication | 2022 |
| Hikari Labs Limited | Information & communication | 2023 |
| Hilditch Residential Management (HRM) Ltd | Administrative & support | 2017 |
| Hill Carr (Services) Limited | Households | 1980 |
| Hill Hall Management Company Limited | Households | 2000 |
| Hill View Coaching LLP | | 2025 |
| Hillandale Properties NO.1 Ltd | Construction | 2017 |
| Hillandale Properties NO.2 Ltd | Construction | 2017 |
| Hillandale Property Co. Limited | Real estate | 2012 |
| Hillcraft Limited | Information & communication | 2003 |
| Hillfocus Limited | Real estate | 2000 |
| Hillpark Project Management Limited | Information & communication | 2024 |
| Hillside Actuarial Limited | Professional & scientific | 2024 |
| Hillyer Mckeown Financial Services LLP | | 2010 |
| Hilton Tower Limited | Construction | 2018 |
| Himalayan Heights Ltd | Wholesale & retail | 2025 |
| Himos Hub Limited | Education | 2023 |
| Hine Projects Ltd | Construction | 2015 |
| Hippo Staffing Solutions Ltd | Administrative & support | 2024 |
| Hiring Wizard Limited | Administrative & support | 2016 |
| Histrionics Ltd | Arts & recreation | 2022 |
| Hitchman Project Consultancy Limited | Administrative & support | 2026 |
| Hive Capital Advisory Limited | Financial services | 2025 |
| Hive Innovation Ltd | Professional & scientific | 2025 |
| Hive Mind Psychology Ltd | Health & social care | 2020 |
| Hive Physio Ltd | Other services | 2020 |
| Hive Science UK Private Ltd | Professional & scientific | 2025 |
| Hive Stores Altrincham Limited | Wholesale & retail | 2024 |
| Hivemind Ltd | Professional & scientific | 2019 |
| Hjpt Properties Limited | Real estate | 2019 |
| HJR IT Consultancy Limited | Administrative & support | 2016 |
| HJS Engineering Limited | Professional & scientific | 2025 |
| HK Advisory Limited | Professional & scientific | 2024 |
| HK Street Food Limited | Hospitality | 2022 |
| HK Tech Consultants Limited | Information & communication | 2024 |
| Hkci Limited | Administrative & support | 2011 |
| HL (88) Limited | Wholesale & retail | 2018 |
| HL Training Solutions Ltd | Administrative & support | 2013 |
| HLC & Co Accountants Limited | Professional & scientific | 2000 |
| HLD (Abingdon) Limited | Construction | 2012 |
| HLM Secretaries Ltd | Professional & scientific | 1999 |
| HMB Finance Group Limited | Financial services | 2016 |
| HMB Projects Limited | Administrative & support | 2025 |
| HMG (Bowdon) Limited | Real estate | 2022 |
| HMG (King Street) Limited | Real estate | 2008 |
| HMG (Kinver) Limited | Extraterritorial | 2019 |
| HMG (ST Ives) Limited | Real estate | 2023 |
| HMG (Stakehill) Limited | Real estate | 2019 |
| HMG Aber Road Limited | Real estate | 2007 |
| HMG Developments Limited | Real estate | 1930 |
| HMG Flintshire Retail Park Limited | Real estate | 2001 |
| HMG Investment Holdings Limited | Real estate | 1990 |
| HMG Investments Limited | Real estate | 1948 |
| HMG Management Limited | Real estate | 1964 |
| HMG Manchester Limited | Extraterritorial | 2017 |
| HMG Prestwich Limited | Extraterritorial | 2006 |
| HMG Properties Limited | Real estate | 1878 |
| HMG Trading Limited | Real estate | 2008 |
| Hmhinvestment Ltd | Real estate | 2020 |
| HMS Dental Limited | Health & social care | 2024 |
| HMS IT Consulting Ltd | Information & communication | 2021 |
| HMS Real Estate Limited | Real estate | 2024 |
| Hms-Nw Ltd | Other services | 2024 |
| Hobby Trading Group Ltd | Wholesale & retail | 2020 |
| Hobson's Choice Consulting Limited | Professional & scientific | 2022 |
| Hoda Enterprise Limited | Professional & scientific | 2023 |
| Hodge Control Engineering Limited | Information & communication | 1991 |
| Hogg Woven Limited | Administrative & support | 2026 |
| Hoime 1 Limited | Financial services | 2023 |
| Hoime 2 Limited | Manufacturing | 2023 |
| Hoime 3 Limited | Manufacturing | 2023 |
| Hoki Document Partners Limited | Professional & scientific | 2026 |
| Holborow & Ormesher Ltd. | Professional & scientific | 2002 |
| Hold the Vision Consulting Ltd | Professional & scientific | 2018 |
| Holford Forest Farm Limited | Agriculture & fishing | 2022 |
| Holiday Cottage Experts Ltd | Extraterritorial | 2014 |
| Holiday Cottage Housekeeping Ltd. | Extraterritorial | 2014 |
| Holiday Homes South West Limited | Real estate | 2005 |
| Holistique Wealth Limited | Financial services | 2015 |
| Holl&Co Property Holdings Ltd | Construction | 2026 |
| Holland Mitchell Limited | Professional & scientific | 2003 |
| Holland Park Heating Limited | Administrative & support | 2014 |