| Henryben & Partner LP | | 2023 |
| Henson Gric Consultancy Limited | Professional & scientific | 2018 |
| HER Reign Ltd | Wholesale & retail | 2025 |
| Here to Help London Ltd | Real estate | 2017 |
| Heretek Ltd | Information & communication | 2023 |
| Hergox Services Ltd | Transport & logistics | 2022 |
| Heritage Decorating Services Plus Limited | Construction | 2017 |
| Heritage Dwellings Limited | Real estate | 2024 |
| Heritage Landscapes & Gardens Ltd | Administrative & support | 2017 |
| Heritage Radio Ltd | Information & communication | 2021 |
| Heritage Remedies Ltd | Wholesale & retail | 2023 |
| Hermalinda 1 Ltd | Public administration | 2022 |
| Hermel Parade Limited | Hospitality | 2025 |
| Heron Anstead Global Media Ltd | Administrative & support | 2010 |
| Hertford Horse Bits Limited | Wholesale & retail | 2016 |
| Hertswood Court (London) RTM Company Limited | Real estate | 2026 |
| Hertswood Court Annexe (London) RTM Company Limited | Real estate | 2026 |
| Heta Interiors Ltd | Professional & scientific | 2025 |
| Heuristic Medical Limited | Professional & scientific | 2018 |
| Hexagon Alliance Ltd | Information & communication | 2019 |
| Hexagon UK Investment Ltd | Real estate | 2024 |
| Hexploits Group Ltd | Financial services | 2026 |
| HEY SAM Ltd | Information & communication | 2020 |
| Heypodguest Limited | Professional & scientific | 2025 |
| Hezron Global Ltd | Professional & scientific | 2018 |
| HF Electrical Services Limited | Construction | 2019 |
| HGK Assets Limited | Real estate | 2026 |
| HGU Cardio Service Limited | Professional & scientific | 2014 |
| HH Land & Commercial Ltd | Real estate | 2020 |
| Hhand Ltd | Wholesale & retail | 2025 |
| Hhcl Holdings Limited | Financial services | 2019 |
| Hhcl Professional Services Limited | Financial services | 2023 |
| HI Steak Ltd | Wholesale & retail | 2026 |
| Hiabt Ltd | Health & social care | 2024 |
| Hibbert O'Shea Limited | Real estate | 2009 |
| Hickey & Co. (Brewery & Dairy Engineers) Limited | Manufacturing | 1981 |
| Hicks Health Osteopathy Ltd | Health & social care | 2025 |
| Hieron Design Ltd | Professional & scientific | 2023 |
| Hieron Holdings Ltd | Financial services | 2023 |
| Hieron London Ltd | Construction | 2021 |
| Higgins Construction Services Ltd | Construction | 2015 |
| High & LOW Group Ltd | Real estate | 2024 |
| High Technology Publishing Ltd | Information & communication | 1996 |
| High Tide Construction Ltd | Construction | 2026 |
| High Trees Mansions RTM Company Limited | Households | 2017 |
| High View Care Services Limited | Health & social care | 2000 |
| Highams Holdings Limited | Real estate | 2019 |
| Highland Bricks & Water Limited | Real estate | 2025 |
| Highland Court (Bromley) Residents Assocaiation Limited | Households | 1960 |
| Highlands #7 Limited | Real estate | 2024 |
| Highlands (Bickley) Management Company Limited | Households | 2009 |
| Highleigh Limited | Hospitality | 2006 |
| Hilden Southborough Limited | Households | 1996 |
| Hill Grove Court (Freehold) Limited | Households | 2018 |
| Hillary Cooper Law Limited | Professional & scientific | 2015 |
| Hillcross Place (Sidcup) Management Company Limited | Households | 2021 |
| Hillside Residents Limited | Households | 2007 |
| Hillstead Properties Limited | Households | 1985 |
| Hillswood Care Limited | Health & social care | 2003 |
| Hillview Ventures Limited | Construction | 2014 |
| Hillyard Macdonald Ltd | Professional & scientific | 2017 |
| Hilton-Dann AC Ltd | Energy | 2018 |
| Hindsight Approach Limited | Other services | 2014 |
| HIP Fire Limited | Information & communication | 2020 |
| Hipcall Ltd | Information & communication | 2021 |
| Hitchens Homes Ltd | Construction | 2025 |
| Hiva Consultants Limited | Information & communication | 2025 |
| Hive Home and Landscape Ltd | Construction | 2020 |
| HJJ Holdings Ltd | Extraterritorial | 2016 |
| Hlai Limited | Information & communication | 2024 |
| HN Gynaecology Limited | Health & social care | 2024 |
| HN Medics (UK) Limited | Health & social care | 2013 |
| HNY Property Holdings Limited | Real estate | 2021 |
| HO LOK 28 Ltd | Hospitality | 2024 |
| HO LOK Bromley Ltd | Hospitality | 2018 |
| Hogarth House Management Limited | Households | 1989 |
| Hoggwell Building Ltd | Construction | 2026 |
| Hojo Signals Ltd | Construction | 2014 |
| Holbrook Green (Bromley) Management Company Limited | Households | 2014 |
| Holdco 73 Ltd | Financial services | 2025 |
| Holder-Diaz Security Ltd | Administrative & support | 2023 |
| Holford and Scott Ltd | Construction | 2022 |
| Holland Court Management (Ashford) Limited | Households | 1993 |
| Holland House Residents Association Limited | Households | 1990 |
| Hollie Rose Clarke Ltd | Other services | 2024 |
| Hollier Consultancy Limited | Professional & scientific | 2025 |
| Hollier Investment Holdings Limited | Financial services | 2025 |
| Hollydene Residents Association Limited | Households | 2000 |
| Hollywood Court Freehold Limited | Households | 2009 |
| Hollywood Court Management Co. (Margate) Limited | Households | 1979 |
| Hollywood Home Developments Limited | Construction | 2019 |
| Holmbury Park Management Company Limited | Real estate | 1984 |
| Holmbury St.Mary Garage Ltd | Wholesale & retail | 2000 |
| Holmdene Court Management Limited | Households | 1963 |
| Holme Court 1-9 Wheatfield House RTM Company Limited | Real estate | 2025 |
| Holme Court 11-12 Victorian Wing RTM Company Limited | Real estate | 2025 |
| Holme Court 13-24 Kingfisher House RTM Company Limited | Real estate | 2025 |
| Holme Court 25-36 Adeline House RTM Company Limited | Real estate | 2025 |
| Holme Court 37-56 Mill House RTM Company Limited | Real estate | 2025 |
| Holmes Hosking Corporate Management Limited | Real estate | 2022 |