| Hawkwell Consulting Ltd | Professional & scientific | 2025 |
| Hawkwell Investments LLP | | 2007 |
| Hawkwell Orchard Limited | Agriculture & fishing | 2022 |
| Hawthorn (Tunbridge) Management Company Limited | Other services | 1984 |
| Hawthorn and Hindley Ltd | Hospitality | 2025 |
| HAY & Straw Limited | Hospitality | 2018 |
| Hayden Hughes Consulting Ltd | Professional & scientific | 2026 |
| Haywardhunt Ltd | Professional & scientific | 2019 |
| Hazelmere (Louth) Limited | Real estate | 1998 |
| Hazelnut Limited | Construction | 2002 |
| Hazle Mccormack Young LLP | | 2006 |
| Hazmirsam Ltd | Extraterritorial | 2019 |
| HB Groundworks & Construction (SE) Limited | Construction | 2025 |
| HBI Consulting Limited | Information & communication | 2003 |
| HCW Associates Limited | Financial services | 2009 |
| HCZ Limited | Real estate | 2020 |
| HD Design Ltd | Professional & scientific | 2026 |
| HDH Electrical Ltd | Construction | 2020 |
| Head First (Hawkhurst) Limited | Health & social care | 2000 |
| Health INK Limited | Professional & scientific | 2014 |
| Health Matters Ltd | Manufacturing | 2007 |
| Healthcare Legal Consultancy Ltd | Professional & scientific | 2023 |
| Healthguardian AI Ltd | Professional & scientific | 2023 |
| Heaos Limited | Information & communication | 2026 |
| Heart of the Rose Limited | Administrative & support | 2021 |
| Heat Pump Co Renewables Ltd | Construction | 2025 |
| Heath Court Residents' Association Limited | Households | 1978 |
| Heathfields (Tunbridge Wells) Residents Association Limited | Households | 2000 |
| Heathgate Associates Ltd | Professional & scientific | 2003 |
| Heathgate Knowledge Engineering Ltd | Professional & scientific | 2004 |
| Heathside Developments Limited | Real estate | 2004 |
| Heathview (Southborough) Residents Association Limited | Households | 1971 |
| Heavenly Soles Limited | Wholesale & retail | 2004 |
| Hebrion Ltd | Wholesale & retail | 2025 |
| Hedgelink Introductions Limited | Financial services | 2016 |
| Hedgesoft Limited | Financial services | 2005 |
| Heir Tight Wills & Estate Planning Ltd | Administrative & support | 2011 |
| Heksacon Ltd | Professional & scientific | 2019 |
| Helios Camden Ltd | Real estate | 1964 |
| Helios Homoeopathy Limited | Wholesale & retail | 2001 |
| Helium Fish Ltd | Arts & recreation | 2006 |
| Hello Dame London Ltd | Wholesale & retail | 2018 |
| Hello Lager Limited | Manufacturing | 2025 |
| Henderson Munro Limited | Professional & scientific | 2018 |
| Hendrix the Dog Productions Limited | Administrative & support | 2008 |
| Henford Properties Limited | Real estate | 2001 |
| Hengist Consultancy Limited | Professional & scientific | 1999 |
| Henrietta Court Management Limited | Households | 2020 |
| Henrietta Properties LLP | | 2013 |
| Henry Charles Properties Ltd | Construction | 2017 |
| Henry Paul Funerals LLP | | 2009 |
| Henry Pearce Sound Ltd | Arts & recreation | 2021 |
| Henwick Blackmere Limited | Professional & scientific | 2024 |
| Henwood Green Limited | Construction | 2015 |
| Hepplewhites Limited | Wholesale & retail | 2007 |
| Hepworth Catalogue Project Limited | Other services | 2023 |
| Herburt & Tryst Limited | Health & social care | 2006 |
| Here BE Dragons Books LLP | | 2020 |
| Here BE Dragons Ltd | Information & communication | 2018 |
| Hereford 247 Limited | Arts & recreation | 2016 |
| Hereworth Ltd | Information & communication | 2026 |
| Heritage Aircraft Limited | Administrative & support | 2009 |
| Heritage Film Services Ltd | Professional & scientific | 2016 |
| Heritage Quay Residents Association Limited | Households | 1999 |
| Heritage Tree Associates LLP | | 2007 |
| Heritatum Collectibles Limited | Wholesale & retail | 2018 |
| Hermosa London Limited | Wholesale & retail | 2017 |
| Heron Property Partners Ltd | Real estate | 2023 |
| Herondale Investment Holdings Limited | Financial services | 2021 |
| Herons Head Dynamics Limited | Information & communication | 2001 |
| Heru-On Limited | Information & communication | 2018 |
| Hesed Ventures Ltd | Administrative & support | 2010 |
| Heselhowe Limited | Real estate | 2016 |
| Hetton Lodge Freehold Management Company Limited | Households | 2015 |
| HEV Electrical Group Limited | Extraterritorial | 2023 |
| Hever Care Limited | Health & social care | 2021 |
| Hever Landscapes Ltd | Administrative & support | 2005 |
| Hewitts Sussex Homes Limited | Construction | 2026 |
| HEX FOX Ltd | Information & communication | 2023 |
| Hexbee Technology Solutions Limited | Wholesale & retail | 2023 |
| HEY Baby 4D Kent West Ltd | Health & social care | 2019 |
| Heydon Ventures Limited | Professional & scientific | 2026 |
| HGR Labels Limited | Manufacturing | 2025 |
| HGS Landscaping and Building Services Ltd | Construction | 2022 |
| Hhjv Hartfield Limited | Construction | 2026 |
| Hhjv Limited | Real estate | 2022 |
| Hidden Hair Salon Limited | Other services | 2021 |
| Hidden Innovation Group Ltd | Manufacturing | 2021 |
| Hiddentonic Security Limited | Information & communication | 2024 |
| High Beeches Management Company Limited | Households | 1982 |
| High Brooms HCW Ltd | Wholesale & retail | 2025 |
| High Grades Limited | Arts & recreation | 1988 |
| High Oak Capital Ltd | Financial services | 2016 |
| High Rocks Property Holdings Ltd | Real estate | 2023 |
| High View Clinical Psychology and Psychotherapy Limited | Health & social care | 2008 |
| High Weald Homecare Ltd | Other services | 2023 |
| High Weald Limited | Professional & scientific | 2000 |
| Highbrooms Food & Wine Ltd | Wholesale & retail | 2023 |
| Highbury Communications Limited | Professional & scientific | 2013 |
| Highbury Global Trading Limited | Financial services | 2026 |