| Hollman Limited | Construction | 2023 |
| Holly Martin Author Limited | Information & communication | 2021 |
| Hollybush Guest House Limited | Hospitality | 2013 |
| Holmes Commercial Limited | Real estate | 1994 |
| Holy Burger Company Ltd | Extraterritorial | 2020 |
| Home Away From Home Child Care & Early Years Ltd | Health & social care | 2017 |
| Home by DC Ltd | Real estate | 2025 |
| Home Dynamics Ltd | Real estate | 2023 |
| Home Efficient Ltd | Construction | 2021 |
| Home Farm (Tingrith) Management Company Ltd | Households | 2012 |
| Home Furnishings Carpet & Flooring Ltd | Wholesale & retail | 2018 |
| Home Furniture Premier Ltd | Wholesale & retail | 2025 |
| Home Heating Limited | Construction | 2008 |
| Home in Check Ltd | Construction | 2021 |
| Home Interior Furniture Ltd | Manufacturing | 2024 |
| Home Park Gardens & Landscaping Ltd | Administrative & support | 2019 |
| Home Premier Furniture Ltd | Wholesale & retail | 2023 |
| Home Retail UK Imports Ltd | Wholesale & retail | 2021 |
| Home Surveys Specialist Ltd | Professional & scientific | 2025 |
| Home to Home Relocation Ltd | Hospitality | 2023 |
| Home-Kitchen-Pets Limited | Wholesale & retail | 2022 |
| HOME2HOMELUTON Limited | Health & social care | 2014 |
| Homeaid Property Services Limited | Construction | 2025 |
| Homeaway Apartments Ltd | Real estate | 2024 |
| Homeaway Holidays Ltd | Real estate | 2025 |
| Homeaway Suites Ltd | Real estate | 2024 |
| Homecare Builders (UK) Ltd | Construction | 2012 |
| Homecomeuk Ltd | Wholesale & retail | 2025 |
| Homeko Limited | Wholesale & retail | 2025 |
| Homeland Property Service Ltd | Real estate | 2020 |
| Homely Interiors Ltd | Professional & scientific | 2023 |
| Homeopathy for ALL Ltd | Health & social care | 2022 |
| Homeroots Nursery Ltd | Health & social care | 2025 |
| Homes 2 Price Limited | Real estate | 2007 |
| Homes Bykac Ltd | Real estate | 2026 |
| Homes for LET Limited | Real estate | 2021 |
| HOMES2CARE Limited | Health & social care | 2021 |
| Homestead Foods Limited | Wholesale & retail | 1983 |
| Homestyle Roofing Ltd | Construction | 2023 |
| Homieestudio Ltd | Wholesale & retail | 2020 |
| Homing Estates Limited | Real estate | 2021 |
| Hominglyfurniture Ltd | Wholesale & retail | 2025 |
| Hondu M. Ltd | Construction | 2014 |
| Honest Care Limited | Health & social care | 2023 |
| Honest Learning Centre Limited | Education | 2023 |
| Honey-Beez Ltd | Information & communication | 2025 |
| Honeycroft Services Limited | Professional & scientific | 2006 |
| Honeygate Holdings Ltd | Administrative & support | 2023 |
| Honeytraders Ltd | Wholesale & retail | 2026 |
| Hong Luton Limited | Hospitality | 2025 |
| Honjin Gelwood Limited | Financial services | 2021 |
| HOO Getaway Ltd | Hospitality | 2022 |
| HOO Residential Limited | Real estate | 2024 |
| Hooded Owls Limited | Wholesale & retail | 2006 |
| Hoorain Solitions Limited | Wholesale & retail | 2025 |
| Hope Care 24/7 Ltd | Administrative & support | 2020 |
| Hope Church Luton Trust | Other services | 2010 |
| Hope Paper and Packaging Ltd | Wholesale & retail | 2026 |
| Hope Pathway Ltd | Health & social care | 2019 |
| Hopes LD Ltd | Health & social care | 2018 |
| Hopton Enterprise Ltd | Transport & logistics | 2023 |
| Horis Printz Ltd | Manufacturing | 2025 |
| Horizon & Co Supply Limited | Wholesale & retail | 2026 |
| Horizon Builderz Ltd | Construction | 2025 |
| Horizon Commerce Limited | Wholesale & retail | 2026 |
| Horizon Consulting and Strategy Ltd | Administrative & support | 2025 |
| Horizon Facility Limited | Professional & scientific | 2026 |
| Horizon Peak LLC Ltd | Wholesale & retail | 2025 |
| Horizon Relocation Group Limited | Transport & logistics | 2025 |
| Horn of Spice Limited | Manufacturing | 2025 |
| Horrigan Davie Surveyors Ltd | Professional & scientific | 2021 |
| Horticultural Inoculation Systems Ltd | Manufacturing | 2016 |
| Hosey Homes Ltd | Real estate | 2021 |
| Hostbridge Limited | Real estate | 2025 |
| Hostkleen Ltd | Administrative & support | 2026 |
| Hot and Spicy Ltd | Hospitality | 2015 |
| Hot Food 4 U Ltd | Hospitality | 2024 |
| Hot&Spicy Bites Ltd | Hospitality | 2025 |
| Hotville Luton Ltd | Hospitality | 2026 |
| Houghton Car Wash Ltd | Administrative & support | 2023 |
| House Brothers Ltd | Real estate | 2023 |
| House Gardens Limited | Administrative & support | 2020 |
| House Help Cleaning Ltd | Administrative & support | 2025 |
| House of Abraham | Other services | 1997 |
| House of Aesthetics & Beauty Ltd | Other services | 2017 |
| House of Children - the Nursery Ltd | Hospitality | 2025 |
| House of Hamilton Aesthetics Limited | Health & social care | 2025 |
| House of Mandi and Desserts Ltd | Hospitality | 2025 |
| House of Purple Rose Ltd | Wholesale & retail | 2020 |
| House of Spices Ltd | Wholesale & retail | 2019 |
| House of Walker Limited | Construction | 1993 |
| House of Westphalia Limited | Wholesale & retail | 1990 |
| HOUSE2HOUSE Ltd | Real estate | 2019 |
| HOUSED4GOOD Ltd | Information & communication | 2019 |
| Houses and Properties Ltd | Information & communication | 2023 |
| Houzing Services Ltd | Real estate | 2017 |
| HOW2NERD Ltd | Education | 2025 |
| Howard Garden Limited | Hospitality | 2018 |
| Howarth Electrical Contractors Limited | Construction | 1997 |
| Howick Enterprises Ltd | Real estate | 2021 |