| HE & Wong Ltd | Hospitality | 2016 |
| He's Lord Ltd | Extraterritorial | 2024 |
| HEA Properties Limited | Real estate | 2023 |
| HEA Real Estate Limited | Real estate | 2023 |
| Head Office Hair Zone Limited | Other services | 2019 |
| Headley Stokes Associates Limited | Professional & scientific | 2011 |
| Headlines MK Limited | Information & communication | 2015 |
| Headstar Barbers Ltd | Other services | 2025 |
| Headway HR Ltd | Extraterritorial | 2023 |
| Heal | Education | 1992 |
| Healing Hands Animal Physiotherapy Limited | Professional & scientific | 2016 |
| Healing Homes Ltd | Construction | 2023 |
| Healing Humanity Limited | Health & social care | 2025 |
| Health Clubs at Home Limited | Administrative & support | 2003 |
| Health Link Staffing Solutions Ltd | Administrative & support | 2023 |
| Health Nexus Solutions Ltd | Wholesale & retail | 2024 |
| Health Spaces Limited | Construction | 2021 |
| Healthcare Business Partners Limited | Professional & scientific | 2019 |
| Healthcare Horizons Ltd | Health & social care | 2025 |
| Healthcare Investments (UK) Ltd | Professional & scientific | 2009 |
| Healthcare Matters Ltd | Professional & scientific | 2024 |
| Healthcare+ Hub Ltd | Wholesale & retail | 2025 |
| Healthy Care Limited | Health & social care | 2016 |
| Healthy Path Support Ltd | Health & social care | 2024 |
| Healthy Smile Care Ltd | Health & social care | 2019 |
| Healthy-Halal Online Ltd | Hospitality | 2017 |
| Hearthstone SA Ltd | Hospitality | 2022 |
| Heartland Mortgage Services Ltd | Financial services | 2018 |
| Heartworms Ltd | Arts & recreation | 2024 |
| Heateco Solutions Ltd | Wholesale & retail | 2025 |
| Heating Spares 365 Ltd | Wholesale & retail | 2024 |
| Heatvault Partnerships Limited | Financial services | 2026 |
| Heaven-Rise Ventures Ltd | Real estate | 2025 |
| HEAVEN7 Dreamers Limited | Real estate | 2025 |
| Hebden Holdings Ltd | Education | 2025 |
| Hebeel Limited | Health & social care | 2019 |
| Heckington Dental Practice Limited | Administrative & support | 2009 |
| Hectech Ltd | Financial services | 2022 |
| HED Global Limited | Arts & recreation | 2018 |
| Hedge Analytics Ltd | Financial services | 2021 |
| Hedgehog House Properties Ltd | Real estate | 2021 |
| Hegarty (Peterborough) Limited | Administrative & support | 2009 |
| Hegarty Trust Corporation Limited | Administrative & support | 2025 |
| HEIGHT62 Properties Ltd | Real estate | 2017 |
| Helen's Beauty Room Ltd | Other services | 2021 |
| Helix Group Ltd | Administrative & support | 2023 |
| Hello Cairo Limited | Hospitality | 2026 |
| Hello Carz Ltd | Transport & logistics | 2019 |
| Hello Mundo LP | | 2024 |
| Help YOU IT Ltd | Information & communication | 2022 |
| Helplines Partnership | Health & social care | 2008 |
| Helpston P. O. & Stores Ltd | Wholesale & retail | 2017 |
| Hemera Property Ltd | Real estate | 2020 |
| Hemingford Park Hospitality Limited | Agriculture & fishing | 2020 |
| Hemingford Park Limited | Real estate | 2010 |
| Hempstead Barn Ltd | Real estate | 2025 |
| Hemroz Property Management Ltd | Real estate | 2024 |
| Henat Company Limited | Construction | 2013 |
| Henderson Brown Recruitment Limited | Administrative & support | 2009 |
| Henovafresh Ltd | Manufacturing | 2026 |
| Henrinoch UK Limited | Wholesale & retail | 2010 |
| Henry's Jerk & Thyme Ltd | Hospitality | 2026 |
| Henson Crisp Limited | Professional & scientific | 2007 |
| Henson Stone Flooring Ltd | Construction | 2025 |
| HER Tomorrow Matters C.I.C. | Education | 2026 |
| Hera Beauty Ltd | Manufacturing | 2011 |
| Herbal Oral Care Ltd | Manufacturing | 2024 |
| Herbanic Vital Ltd | Manufacturing | 2025 |
| Herbert Llewellyn Ltd | Construction | 2022 |
| Hercules Automotive Ltd | Wholesale & retail | 2026 |
| Hercules Direct Marketing Limited | Professional & scientific | 1991 |
| Hercules Marketing and Communications Limited | Professional & scientific | 2013 |
| Hercules Wholesale Limited | Wholesale & retail | 2024 |
| Here WE Aren'T Records Limited | Wholesale & retail | 2016 |
| Hereward Care Services Ltd | Health & social care | 2000 |
| Hereward Carpets Limited | Wholesale & retail | 2003 |
| Hereward Digital Ltd | Information & communication | 2005 |
| Hereward GAS Limited | Energy | 2003 |
| Hereward GAS Maintenance Ltd | Construction | 2010 |
| Hereward Pumps Limited | Manufacturing | 2003 |
| Hereward Teamwear & Trophies Limited | Wholesale & retail | 2007 |
| Herfy Limited | Construction | 2019 |
| Heritage Accommodation Ltd | Real estate | 2024 |
| Heritage Cleaning Ltd | Administrative & support | 2026 |
| Heritage Court Management Company (Kettering) Limited | Extraterritorial | 2004 |
| Heritage Homes Development Limited | Real estate | 2007 |
| Heritage Marketing Limited | Administrative & support | 2003 |
| Heritage Roofing and Building Services Ltd | Construction | 2021 |
| Heritage Strategies Limited | Construction | 2015 |
| Herlington Store Ltd | Wholesale & retail | 2025 |
| Hermes Systems Ltd. | Financial services | 2005 |
| Hermes Trans Ltd | Administrative & support | 2025 |
| Hermione Ltd | Professional & scientific | 2010 |
| Hermitage Gardens Limited | Real estate | 2014 |
| Hermitage Residents Company Limited | Households | 2002 |
| Heron Court Ltd | Households | 2019 |
| Heron House Ltd | Financial services | 2015 |
| Herron Group Limited | Professional & scientific | 2025 |
| Herroute Express Limited | Transport & logistics | 2025 |
| Hersh Barbers Ltd | Other services | 2022 |