| Homely EAT Ltd | Hospitality | 2026 |
| Homely Move Limited | Real estate | 2014 |
| Homely Residents Association Limited | Households | 1987 |
| Homestead Stud Limited | Agriculture & fishing | 2005 |
| Homestyle Hosts Ltd | Real estate | 2024 |
| Homestyle Installations Limited | Construction | 2015 |
| Homeview Ltd | Real estate | 2017 |
| Homezeal Care UK Ltd | Administrative & support | 2023 |
| Honalee Ltd | Financial services | 2019 |
| Honbria Ltd | Manufacturing | 2020 |
| Honeycrown Care Limited | Health & social care | 2020 |
| Honeywood Holdings Ltd | Real estate | 2017 |
| Hong's Cuisine Ltd | Hospitality | 2025 |
| Hongs Place Food Ltd | Hospitality | 2025 |
| Hongs Place Ltd | Hospitality | 2022 |
| Honnett Limited | Information & communication | 2015 |
| Honor Roll Academy Limited | Education | 2016 |
| Honordex Ltd | Information & communication | 2023 |
| Honour Homes Ltd | Real estate | 2025 |
| Honoured House Limited | Extraterritorial | 2025 |
| Honu Consulting Ltd | Information & communication | 2019 |
| Hoodoo Water Technology Limited | Extraterritorial | 2015 |
| Hoof Tech Limited | Administrative & support | 2005 |
| Hookings Management Limited | Professional & scientific | 2018 |
| HOP Bar Co Ltd | Hospitality | 2024 |
| HOP Solutions Ltd | Wholesale & retail | 2022 |
| Hope International Education (UK) Ltd | Education | 2019 |
| Hopenet Information Security Ltd | Information & communication | 2026 |
| Hopleaf Limited | Hospitality | 2016 |
| Horace Ltd | Manufacturing | 2016 |
| Horizon (Qa/Qc) Limited | Professional & scientific | 2007 |
| Horizon Global Ltd | Financial services | 2019 |
| Horizon Parking Limited | Real estate | 2011 |
| Horizon Ventures Group Limited | Financial services | 2021 |
| Horizone Ltd | Information & communication | 2002 |
| Hortons Consulting Ltd | Professional & scientific | 2020 |
| HOS Recruitment Ltd | Health & social care | 2025 |
| Hosanna Relocation Specialist Ltd | Hospitality | 2021 |
| Hosdab Ltd | Real estate | 2023 |
| Hosh EN Ltd | Hospitality | 2026 |
| Hospitality Management Services Ltd | Other services | 2022 |
| Hospitium Semper Ltd | Hospitality | 2012 |
| Hostava Limited | Administrative & support | 2025 |
| Hot Box Live Community Interest Company | Arts & recreation | 2020 |
| Hot TUB Barn Limited | Wholesale & retail | 2017 |
| Hotel Nellai Saravana Bhava Ltd | Hospitality | 2026 |
| Hotlight Entertainment Limited | Information & communication | 2020 |
| Hottubprosuk Ltd | Construction | 2023 |
| Hough Lifting Services Ltd | Administrative & support | 2026 |
| Hough Steel Services Limited | Manufacturing | 2020 |
| Houghton Construction and Groundworks Limited | Construction | 2018 |
| Houlton Vision Ltd | Information & communication | 2025 |
| Houlton Vision Services Limited | Information & communication | 2006 |
| House Business Limited | Real estate | 2016 |
| House Group (Essex) Ltd | Financial services | 2020 |
| House of Divine Ltd | Real estate | 2024 |
| House of Garrod Limited | Wholesale & retail | 2013 |
| House Rentals Ltd | Real estate | 2019 |
| Housechoice Heating Limited | Construction | 2021 |
| Household Boutique Ltd | Wholesale & retail | 2025 |
| Houseinn Limited | Professional & scientific | 1997 |
| Housemartins Property Group Limited | Real estate | 2025 |
| Houseofarran Ltd | Wholesale & retail | 2018 |
| Housing Dilemmas C.I.C. | Hospitality | 2018 |
| Housing Support Solution Ltd | Real estate | 2025 |
| Howe Consulting Limited | Wholesale & retail | 2018 |
| Howe Green Holdings Limited | Real estate | 2016 |
| Howes Aero-Nautics Limited | Administrative & support | 2009 |
| Howsden Consulting Limited | Professional & scientific | 2026 |
| Howtown Investments Limited | Professional & scientific | 2010 |
| Hoxha Coffee House Ltd | Hospitality | 2023 |
| Hoxton Circle Limited | Financial services | 2016 |
| HP Invest Limited | Real estate | 2021 |
| HPM Global Ltd | Other services | 2019 |
| Hpot Ltd | Health & social care | 2022 |
| Hppsir Limited | Public administration | 2023 |
| Hpuk Group Ltd | Information & communication | 2024 |
| Hpwe Security Ltd | Administrative & support | 2026 |
| HPY East Ltd | Arts & recreation | 2019 |
| HQ London Limited | Hospitality | 2003 |
| HQF Construction Ltd | Construction | 2019 |
| HR Design School Ltd | Education | 2021 |
| HR Solutions (Essex) Ltd | Professional & scientific | 2008 |
| HRA Surveys Limited | Administrative & support | 2022 |
| Hrdn Holdings | Professional & scientific | 2026 |
| Hrdn Investments | Professional & scientific | 2023 |
| Hrdn Properties Ltd | Construction | 2025 |
| HRL Carpentry Contractors Ltd | Construction | 2015 |
| HRL Developments (Essex) Limited | Construction | 2016 |
| HSD Mortgages & Protection Ltd | Financial services | 2024 |
| Hsefiles Ltd | Wholesale & retail | 2025 |
| HST Highview Ltd | Public administration | 2021 |
| HSV Hotels Limited | Hospitality | 2020 |
| HT Beauty Spa Ltd | Other services | 2024 |
| HT Industrial Limited | Administrative & support | 2022 |
| HT Medical Services Limited | Health & social care | 2011 |
| HTM Electrical Limited | Manufacturing | 2025 |
| Htthome Ltd | Transport & logistics | 2020 |
| Hu.Sl Studio Limited | Information & communication | 2018 |
| Hub Consult Limited | Professional & scientific | 2023 |