| Hire IT Furniture Limited | Administrative & support | 2017 |
| Hire South Ltd | Administrative & support | 2024 |
| Hiremyma Limited | Administrative & support | 2017 |
| Hirsch Estates Limited | Real estate | 2020 |
| HIS Grace Evangelical Outreach Limited | Education | 2011 |
| Hisky Light Ltd | Construction | 2024 |
| HIT Songs Production Music Limited | Arts & recreation | 2021 |
| HIT the Spot Ltd | Hospitality | 2026 |
| Hitches Lane Management Company Limited | Households | 2008 |
| Hitech Empire Limited | Professional & scientific | 2016 |
| Hitech Mobiles & Accessories Ltd | Manufacturing | 2016 |
| Hitomed P&D Ltd | Health & social care | 2024 |
| Hive Properties Limited | Real estate | 1998 |
| HJV Construction Ltd | Construction | 2013 |
| HK Beauty Studio Limited | Other services | 2024 |
| HK Immigration Law Limited | Other services | 2022 |
| Hkbp Properties Ltd | Real estate | 2025 |
| HKO Leasing Ltd | Administrative & support | 2025 |
| HKR Family Shopper Limited | Wholesale & retail | 2024 |
| Hkrs Properties Limited | Real estate | 2023 |
| Hksb Consultants Limited | Information & communication | 2025 |
| HL Advisory Ltd | Professional & scientific | 2025 |
| HLQ Solutions Ltd | Administrative & support | 2024 |
| HM & ANN Limited | Professional & scientific | 2015 |
| HM NW Ltd | Wholesale & retail | 2022 |
| Hm.Shahid Ltd | Transport & logistics | 2023 |
| HMC Consulting & Training Ltd | Professional & scientific | 2007 |
| HMH Gifts Ltd | Wholesale & retail | 2022 |
| HMK Data Limited | Information & communication | 2015 |
| HMO S.E. Limited | Construction | 2018 |
| HMS Prestige Construction Ltd | Construction | 2025 |
| HN Design Nails & Beauty Limited | Other services | 2016 |
| HNB Holdings Private Limited | Wholesale & retail | 2025 |
| HNF Property Limited | Real estate | 2022 |
| HNH Double Glazing and Building Ltd | Construction | 2019 |
| Hobo Studio Limited | Wholesale & retail | 2023 |
| Hofts Childcare Solutions Ltd | Education | 2017 |
| Hogar Enterprises Ltd | Real estate | 2021 |
| Hoggs Hospitality Ltd | Hospitality | 2022 |
| Hogies UK Ltd | Wholesale & retail | 2020 |
| Hokstad Consulting Limited | Administrative & support | 2015 |
| Holacloud Technologies Limited | Information & communication | 2023 |
| Holborn Leathers Limited | Wholesale & retail | 2024 |
| Holbrook Developments Limited | Construction | 1999 |
| Holiday Master Ltd | Administrative & support | 2009 |
| Holiplay Ltd | Health & social care | 2014 |
| Holistic Health & Physio Limited | Other services | 2024 |
| Holistic Wellbeing Hub C.I.C. | Education | 2023 |
| Holland Niuyishinong Fluid Limited | Administrative & support | 2023 |
| Hollands Court Management Company Limited | Households | 2006 |
| Holliday Road B21 Ltd | Real estate | 2024 |
| Hollin Hill Properties Limited | Hospitality | 1997 |
| Hollington Court Residents Association (Chislehurst) Limited | Households | 1990 |
| Hollingworth Grange (Management Company) Limited | Households | 2007 |
| Holly Court (44 Hawes Lane) Residents Company Limited | Households | 1999 |
| Holly Lodge Management Company (Sale) Limited | Households | 2004 |
| Holly Road North Management Company Limited | Households | 1984 |
| Holly Touch Carehome Ltd | Health & social care | 2024 |
| Hollyacre Estate Management Company Limited | Households | 2014 |
| Hollygrove Residents Company Limited | Households | 1996 |
| Hollytailor Property Management Company Limited | Households | 2002 |
| Hollywood Court Management (Bowdon) Limited | Households | 1984 |
| Holmans Place Management Limited | Households | 2015 |
| Holme Eden Management Limited | Households | 2003 |
| Holmer Court Management Company Limited | Households | 1974 |
| Holmes Carpentry & Joinery Ltd | Construction | 2022 |
| Holmes Letting & Management Ltd | Real estate | 2019 |
| Holmium Advisory Ltd | Information & communication | 2026 |
| Holmium Security Ltd | Administrative & support | 2026 |
| Holomem Ltd | Professional & scientific | 2020 |
| Holroyd Holdings Limited | Financial services | 2017 |
| Holtwhites Management Company Limited | Households | 1978 |
| Holy COW (Archway) Limited | Hospitality | 2010 |
| Holy COW (Balham) Limited | Hospitality | 2007 |
| Holy COW (Canary Wharf) Limited | Hospitality | 2020 |
| Holy COW (Islington) Limited | Hospitality | 2010 |
| Holy COW (Putney) Limited | Hospitality | 2008 |
| Holy COW Fine Indian Food Ltd | Hospitality | 2006 |
| Holy Sabbath of Christ the Great Mission Ltd | Other services | 2004 |
| Homa Group of Companies Ltd | Health & social care | 2021 |
| Home and DRY Maintenance Ltd | Construction | 2014 |
| Home and Found Limited | Professional & scientific | 2014 |
| Home and Found Shop Limited | Wholesale & retail | 2019 |
| Home Designz Ltd | Real estate | 2018 |
| Home Domus 360 Ltd | Real estate | 2017 |
| Home Fixtures & Fittings Trading Limited | Other services | 2019 |
| Home Guard Builders Limited | Construction | 2022 |
| Home Harmony Construction Limited | Construction | 2023 |
| Home Improvements Surrey Limited | Construction | 2011 |
| Home-Start Croydon | Health & social care | 2004 |
| Homebridge Group Ltd | Administrative & support | 2026 |
| Homecare Experts UK Ltd | Health & social care | 2025 |
| Homecare Services Group (HSG) | Health & social care | 2017 |
| Homeessentialz Limited | Wholesale & retail | 2018 |
| Homely Living Ltd | Administrative & support | 2016 |
| Homemade Passion Ltd | Manufacturing | 2016 |
| Homeopathy and Food Supplements Products Ltd | Health & social care | 2021 |
| Homepride Developments Northampton Limited | Construction | 2017 |
| Homes Association Ltd | Other services | 2015 |
| Homes by Mariam Ltd | Real estate | 2025 |