| HEY Apparel Asia Pacific Limited | Wholesale & retail | 2015 |
| HF Consultancy Limited | Professional & scientific | 2022 |
| HF Events Ltd | Administrative & support | 2019 |
| HH Tutoring Ltd | Education | 2024 |
| HI Qual Properties Limited | Real estate | 2024 |
| Hi-Tech Machinery Limited | Wholesale & retail | 1986 |
| Hibiscus Investors Limited | Real estate | 2020 |
| Hick,Hargreaves and Company Limited | Extraterritorial | 1892 |
| High Level Limited | Professional & scientific | 2018 |
| High Level Photography Limited | Information & communication | 1985 |
| Highcap Consulting Ltd | Wholesale & retail | 2014 |
| Highpoint (Estate Management-Freehold) Limited | Real estate | 1996 |
| Highpoint(Estate Management)Limited | Real estate | 1959 |
| Highvibenation Ltd | Health & social care | 2000 |
| Highway 2 Health Limited | Arts & recreation | 2025 |
| Hill Top Productions Limited | Administrative & support | 2006 |
| Hill View Road Management Company Limited | Real estate | 1995 |
| Hill's Pet Nutrition (OAC) Limited | Wholesale & retail | 2019 |
| Hill's Pet Nutrition Limited | Manufacturing | 1986 |
| Hillvalley Properties Inc & Ltd | Construction | 2025 |
| Hilton Engineering Services Ltd | Manufacturing | 2015 |
| Hilz Transport Limited | Transport & logistics | 2024 |
| Hinite Ltd | Wholesale & retail | 2022 |
| Hippo Designs & Construction Limited | Administrative & support | 2003 |
| HIS Associates Limited | Real estate | 2024 |
| History Makers 23 Ltd | Information & communication | 2023 |
| History Makers 27 Ltd | Information & communication | 2024 |
| Hitch Landscapes Limited | Administrative & support | 2022 |
| Hitech Data Labs Limited | Information & communication | 2022 |
| Hitherto Services Ltd | Professional & scientific | 2024 |
| Hive House Films Limited | Information & communication | 2015 |
| HJC Lettings Limited | Other services | 2004 |
| HK Glams Ltd | Wholesale & retail | 2019 |
| HK Railway Limited | Construction | 2017 |
| Hldo Limited | Real estate | 2024 |
| HLJ Properties Ltd | Real estate | 2020 |
| HM Express Limited | Wholesale & retail | 2018 |
| HM Media Services Ltd | Information & communication | 2025 |
| HMA Property Management Limited | Real estate | 2021 |
| HMC Plumbing & Heating Ltd | Construction | 2026 |
| HMO Surrey Ltd | Real estate | 2024 |
| HMT Global Consulting Ltd | Hospitality | 2025 |
| HMU Accounting Limited | Professional & scientific | 2025 |
| HMZ Cars Ltd | Transport & logistics | 2026 |
| HNA Associates Limited | Professional & scientific | 2005 |
| HNI Properties Limited | Real estate | 2025 |
| HNM Builders Ltd | Construction | 2026 |
| Hodders Property Management Limited | Real estate | 2014 |
| HOE Bridge School Limited | Education | 1986 |
| HOE Bridge Wealth Limited | Professional & scientific | 2024 |
| HOE Valley School | Education | 2014 |
| Hoggett Horticulture Limited | Administrative & support | 2023 |
| Hogsmill Homes Limited | Construction | 2021 |
| Hoha Ltd | Wholesale & retail | 2023 |
| Hojee Ltd | Professional & scientific | 2023 |
| Holden Real Estate Limited | Real estate | 2020 |
| Holdfast Climbing Limited | Arts & recreation | 2025 |
| Holdfire Limited | Manufacturing | 2008 |
| Holistic Fulfilment Ltd | Transport & logistics | 2023 |
| Holistic Health Limited | Health & social care | 2003 |
| Hollerin Consulting Limited | Professional & scientific | 2022 |
| Hollerin Holdings Limited | Financial services | 2019 |
| Hollies Court (Addlestone) Association Limited | Households | 1962 |
| Hollies Foods Ltd | Wholesale & retail | 2020 |
| Holly Berry Trees Limited | Wholesale & retail | 2020 |
| Holly Farm Estates Limited | Professional & scientific | 2014 |
| Holly Lodge Freehold Management Company Limited | Real estate | 2006 |
| Holman Engineering Co. Limited | Manufacturing | 1960 |
| Holmewood Holdings Limited | Households | 2019 |
| Holmsight Limited | Professional & scientific | 2025 |
| Holo Ventures Ltd | Financial services | 2023 |
| Holt Racing Limited | Professional & scientific | 2020 |
| Holy Trinity Pre-School Limited | Education | 2007 |
| Holywell Travel Limited | Administrative & support | 2007 |
| Home 2 School Limited | Transport & logistics | 2002 |
| Home and Gifts Woodley Limited | Wholesale & retail | 2026 |
| Home County LOG Co. Ltd | Wholesale & retail | 2025 |
| Home Court (Surbiton) Residents Association Limited | Households | 1960 |
| Home Farm Place (Woking) Management Company Limited | Households | 2005 |
| Home Investors Ltd | Real estate | 2025 |
| Homecroft Cavendish Mortgages Limited | Administrative & support | 2007 |
| Homes Ahead Limited | Real estate | 2018 |
| Homes Around Limited | Information & communication | 2015 |
| Homesafe Transport Ltd | Transport & logistics | 2025 |
| Hometastic.Solutions Ltd | Wholesale & retail | 2024 |
| Honeybourne House Ltd | Health & social care | 2001 |
| Honeywell Property Maintenance Ltd | Construction | 2018 |
| Hooch Events Ltd | Arts & recreation | 1999 |
| Hopco Consulting Ltd | Professional & scientific | 2024 |
| Hope Sherwin Consulting Ltd | Professional & scientific | 2024 |
| Hope Technical Sales and Services Limited | Agriculture & fishing | 1989 |
| Hoplings Ltd | Transport & logistics | 2019 |
| Hoppa Group, Ltd | Administrative & support | 2025 |
| Horizon Edge Consulting Ltd | Professional & scientific | 2025 |
| Horizon Financial Advice Limited | Financial services | 2021 |
| Horizon LET Estates Ltd | Real estate | 2025 |
| Horizon Professional Services Limited | Information & communication | 2006 |
| Horizonsources Ltd | Wholesale & retail | 2025 |
| Hornetsecurity UK Holding Limited | Administrative & support | 2019 |
| Horrocks Technology Limited | Information & communication | 1995 |