| Hot Fried Chicken and Pizza Limited | Hospitality | 2026 |
| Hot Kebab and Pizza Limited | Hospitality | 2026 |
| Hot WOK Garden Ltd | Hospitality | 2020 |
| Hot Work Garden Limited | Hospitality | 2019 |
| House Cleaner Near ME Limited | Administrative & support | 2025 |
| House of Apeksha Ltd | Wholesale & retail | 2026 |
| House of Chai Limited | Wholesale & retail | 2025 |
| House of Order Ltd | Information & communication | 2026 |
| House of Tuma Ltd | Real estate | 2025 |
| Household and Hardware Store Limited | Wholesale & retail | 2023 |
| Houseofhairology Ltd | Other services | 2024 |
| Houseofkulchaa Ltd | Hospitality | 2024 |
| HOW to Start UPS Ltd | Professional & scientific | 2021 |
| HP and Family Limited | Wholesale & retail | 2025 |
| HP Group Holdings Ltd | Financial services | 2025 |
| HP Trading Company Ltd | Wholesale & retail | 2023 |
| Hpurohit Infracon Limited | Information & communication | 2011 |
| HR & Sons Ltd | Real estate | 2025 |
| HR Assured Ltd | Administrative & support | 2012 |
| HR Fashion & Design Limited | Wholesale & retail | 2017 |
| HR Hubber Ltd | Administrative & support | 2025 |
| HR Real Estate Ltd | Real estate | 2015 |
| Hrida Solutions Ltd | Information & communication | 2023 |
| HRS Property Investments Ltd | Real estate | 2019 |
| HRV Estates Ltd | Real estate | 2024 |
| HS Fish & Chips Ltd | Hospitality | 2018 |
| HS London Marble Ltd | Construction | 2022 |
| HS Motorss Limited | Wholesale & retail | 2019 |
| HS Squared Ltd | Real estate | 2017 |
| HSA Solutions Limited | Construction | 2014 |
| HSB Group Ltd | Financial services | 2026 |
| HSN Premium Cars Ltd | Wholesale & retail | 2025 |
| HSP Electronics Limited | Real estate | 1986 |
| HT Investments Ltd | Real estate | 2020 |
| Htc-Uk Limited | Professional & scientific | 2020 |
| Hudson Almere Limited | Administrative & support | 2017 |
| Hudson Arnhem Limited | Administrative & support | 2017 |
| Hudson Brent Limited | Administrative & support | 2017 |
| Hudson Camden Limited | Administrative & support | 2017 |
| Hudson Chemical Tankers Limited | Administrative & support | 2017 |
| Hudson Kensington Limited | Transport & logistics | 2017 |
| Hudson Lisse Limited | Transport & logistics | 2017 |
| Hudson Richmond Limited | Transport & logistics | 2017 |
| Hufdigital Ltd | Wholesale & retail | 2024 |
| Hughes Electronics Limited | Manufacturing | 1993 |
| Hughes Plastering Ltd | Construction | 2008 |
| Hughes Telecom Limited | Administrative & support | 2014 |
| Hull Medical Services Limited | Real estate | 2017 |
| Humagain and Consultants Limited | Administrative & support | 2025 |
| Humanai Ltd | Professional & scientific | 2025 |
| Humaylian Accountants & Co Ltd | Professional & scientific | 2017 |
| Humbelle Ltd | Hospitality | 2025 |
| HUNDRED44K Ltd | Other services | 2020 |
| Hungary Innovation Technology Ltd | Construction | 2025 |
| Huntington Services Ltd | Professional & scientific | 2025 |
| Huntvale Limited | Real estate | 2000 |
| Hunylondon Ltd | Wholesale & retail | 2019 |
| Husham&Co Limited | Administrative & support | 2025 |
| Hussain Dent Ltd | Health & social care | 2026 |
| HV Investments Limited | Real estate | 2019 |
| HV Production Limited | Hospitality | 2025 |
| HV Sales Limited | Wholesale & retail | 2015 |
| HV Stays Ltd | Wholesale & retail | 2023 |
| HVP Consultancy Ltd | Information & communication | 2019 |
| HVS Commercial Limited | Wholesale & retail | 2017 |
| HVS London Limited | Wholesale & retail | 2008 |
| Hwesub Ltd | Hospitality | 2026 |
| Hxmza Trades Ltd | Wholesale & retail | 2024 |
| Hybird Motors Ltd | Wholesale & retail | 2015 |
| Hybridae Limited | Information & communication | 2010 |
| Hydeway Limited | Wholesale & retail | 2019 |
| Hyejoo Ltd | Real estate | 2021 |
| Hymy Ltd | Wholesale & retail | 2025 |
| Hyperlulu Ltd | Manufacturing | 2025 |
| HZT Parts Transport Ltd | Transport & logistics | 2023 |
| I & N Investments Ltd | Real estate | 2007 |
| I AM Alpha Fitness Ltd | Arts & recreation | 2024 |
| I AM Retail Limited | Wholesale & retail | 2023 |
| I DO Fashion Limited | Wholesale & retail | 2017 |
| I Juravle Ltd | Construction | 2014 |
| I Love Pierogi Limited | Hospitality | 2018 |
| I M S Cobu Ltd | Construction | 2019 |
| I Q Trading Limited | Wholesale & retail | 2004 |
| I S Property Estates Ltd | Real estate | 2016 |
| I S Solar Ltd | Wholesale & retail | 2024 |
| I Solution Technology Ltd | Information & communication | 2023 |
| I Want Vada Ltd | Hospitality | 2025 |
| I Z Property Ltd | Real estate | 2025 |
| I&A Garage Ltd | Wholesale & retail | 2026 |
| I&J Properties Ltd | Real estate | 2023 |
| I&M Global Limited | Wholesale & retail | 2018 |
| I&S Skills Ltd | Construction | 2024 |
| I-Bag- Ltd | Wholesale & retail | 2012 |
| I-Brights Limited | Administrative & support | 2013 |
| I-Ditt Limited | Professional & scientific | 2019 |
| I-Franx Ltd | Other services | 2018 |
| I4B Holdings Limited | Administrative & support | 2016 |
| IA Couriers & Logistics Ltd | Transport & logistics | 2025 |
| IA Mount Properties Limited | Real estate | 2023 |
| Iacap Ltd | Financial services | 2016 |