| Heat My Flooring Ltd | Construction | 2023 |
| Heatu Services Ltd | Construction | 2020 |
| Heavenstone Landscapes Limited | Extraterritorial | 2022 |
| Heedx Ltd | Wholesale & retail | 2025 |
| Heer Property Services Ltd | Real estate | 2016 |
| HEI HEI Ltd | Hospitality | 2025 |
| Heimdall Coffee Company Limited | Manufacturing | 2021 |
| Heist 1 to 1 Music Tuition Ltd | Education | 2017 |
| Helemath Enterprise Limited | Construction | 2026 |
| Helier Design Solutions Limited | Construction | 2024 |
| Helix City Ltd | Real estate | 2022 |
| Hell's Garage Ltd | Other services | 2019 |
| Hells Angels Motor Cycle Club (Kent) Limited | Other services | 1985 |
| Helms Way Management Company Limited | Real estate | 2017 |
| Help With Adwords Limited | Professional & scientific | 2019 |
| Helperhive Ltd | Administrative & support | 2025 |
| Henry Building Services Ltd | Construction | 2016 |
| Henry Construction (INT) Ltd | Construction | 2024 |
| Henry Court (Canterbury) Limited | Households | 2010 |
| Heracles Group Limited | Extraterritorial | 2017 |
| Herald Services Ltd | Transport & logistics | 2022 |
| Hergest & Cavell Funeral Directors Limited | Other services | 2017 |
| Heritage Barbers Sittingbourne Limited | Other services | 2025 |
| Heritage Catering Services Limited | Hospitality | 2015 |
| Heritage Marine Services Ltd | Manufacturing | 2024 |
| Heritage Plumbing Ltd | Construction | 2026 |
| Heritage Property Wealth Ltd | Real estate | 2021 |
| HERITAGE21 and Services Ltd | Health & social care | 2025 |
| Hermes Payroll Solutions Ltd | Administrative & support | 2020 |
| Hertz Construction Solutions Ltd | Construction | 2016 |
| Hessings & Harcourt Limited | Professional & scientific | 2000 |
| Hettyk Limited | Health & social care | 2019 |
| Hever Court Residents Management (a & B) Limited | Households | 1976 |
| Hever Court Residents Management (C & D) Limited | Households | 1976 |
| Hever Court Residents Management (E & F) Limited | Households | 1976 |
| Hewitson Steelwork Ltd | Construction | 2026 |
| Hexacore Technologies Ltd | Wholesale & retail | 2025 |
| Heyzer Limited | Professional & scientific | 2013 |
| HFR Construction Ltd | Construction | 2025 |
| HFS Environmental Holdings Limited | Financial services | 2021 |
| HFS Environmental Limited | Construction | 2004 |
| HH Gravesend Limited | Construction | 2019 |
| HH Retailers Ltd | Wholesale & retail | 2025 |
| Hhhr Property Limited | Real estate | 2026 |
| HI Speed Construction Ltd | Construction | 2025 |
| Hi-R Education Ltd | Education | 2019 |
| HI5 Construction Limited | Construction | 2021 |
| Hibiscus Childcare Ltd | Health & social care | 2024 |
| Hickson Capital Limited | Financial services | 2025 |
| Higgins Property & Maintenance Ltd | Real estate | 2024 |
| Higginsworld Limited | Health & social care | 2013 |
| High Build Solutions Ltd | Construction | 2024 |
| High Performance HQ Ltd | Health & social care | 2025 |
| Highbridge Homes Ltd | Real estate | 2015 |
| Highbury Investments Management Limited | Real estate | 2016 |
| Highcross Management Services Limited | Administrative & support | 2017 |
| Highfield Management Company (Ashford) Limited | Construction | 1986 |
| Highland Consulting Group (HCG) Limited | Administrative & support | 2018 |
| Highscore Web Design Ltd | Administrative & support | 2011 |
| Hightech Property Maintenance Ltd | Administrative & support | 2019 |
| Highview Holdings Group Ltd | Financial services | 2025 |
| Highview Homes Group Ltd | Construction | 2025 |
| Hilal Kebab House Limited | Hospitality | 2026 |
| Hilda Training Services Limited | Health & social care | 2013 |
| Hill Accountancy Ltd | Professional & scientific | 2021 |
| Hill Tandoori Ltd | Hospitality | 2022 |
| Hillmore Court Residents Association Limited | Households | 1999 |
| Hillside Avenue Limited | Households | 2016 |
| Hillside Court Maintenance (Strood) Limited | Households | 1962 |
| Hira's Fitness Limited | Other services | 2026 |
| Hiri Trans Limited | Transport & logistics | 2018 |
| Hitchcock Frank Limited | Professional & scientific | 2018 |
| Hiva Healthcare Limited | Wholesale & retail | 2018 |
| HJB Construction Services Ltd | Construction | 2007 |
| HJG Flooring Ltd | Construction | 2015 |
| HK Apps Limited | Information & communication | 2024 |
| Hkaasa Properties Ltd | Real estate | 2022 |
| HKJ Mechanical Ltd | Construction | 2018 |
| HLE Labour Supply Limited | Construction | 2014 |
| HLT Constructions Ltd | Professional & scientific | 2020 |
| HM Trans Ltd | Transport & logistics | 2023 |
| Hmdr Ltd | Professional & scientific | 2022 |
| HMT Fire Protection Ltd | Public administration | 2019 |
| HMW Electrical Ltd | Construction | 2025 |
| HNH Homes Ltd | Real estate | 2023 |
| Hobbs and SON Limited | Agriculture & fishing | 2018 |
| Hode Ltd | Hospitality | 2026 |
| Hodge Demolition Ltd | Construction | 2010 |
| Hodge Kent Ltd | Real estate | 2024 |
| Hodge London Ltd | Financial services | 2024 |
| Hodson Crane Services Ltd | Transport & logistics | 2018 |
| Hoist Construction Ltd | Construction | 2024 |
| Holborough Heights Management Company Limited | Households | 1992 |
| Holbrooks Fitness Ltd | Other services | 2016 |
| Holder & Holder Properties Limited | Real estate | 2019 |
| Holdswift Property Management Limited | Households | 1991 |
| Holiday Rock Limited | Administrative & support | 2003 |
| Holistic Gypsies Ltd | Wholesale & retail | 2021 |
| Holistic Hues Limited | Health & social care | 2024 |
| Holistic Skin Clinic Ltd | Other services | 2022 |