| Lusso Automobile Specialist Ltd | Administrative & support | 2023 |
| Luton & Dunstable Scaffolding Limited | Construction | 2014 |
| Luton 1973 Limited | Extraterritorial | 2013 |
| Luton Accommodations Limited | Real estate | 2019 |
| Luton Accountancy Ltd | Professional & scientific | 2013 |
| Luton African Food Centre Ltd | Wholesale & retail | 2026 |
| Luton Airport Specialist Cars Ltd | Administrative & support | 2019 |
| Luton Airport Taxis Ltd | Transport & logistics | 2026 |
| Luton Airport Transfers Ltd | Transport & logistics | 2023 |
| Luton ALL Women Centre | Health & social care | 2003 |
| Luton and Beyond CIC | Public administration | 2025 |
| Luton and Dunstable Christian Assembly CIC | Other services | 2024 |
| Luton and Dunstable Tamil Sangam CIC | Health & social care | 2026 |
| Luton and Dunstable Tamil Welfare Organisation Ltd | Education | 2016 |
| Luton Angling Club Limited | Other services | 2001 |
| Luton Auto Body Limited | Wholesale & retail | 2018 |
| Luton Auto Specialist Ltd | Wholesale & retail | 2024 |
| Luton Autofactors Limited | Wholesale & retail | 2022 |
| Luton Autofix & Tyres Repair Ltd | Wholesale & retail | 2025 |
| Luton Automotive Ltd | Wholesale & retail | 2023 |
| Luton Baako Festival Ltd | Arts & recreation | 2025 |
| Luton BID Ltd | Other services | 2014 |
| Luton Biryani Ltd | Hospitality | 2024 |
| Luton Brake & Service World Limited | Wholesale & retail | 2016 |
| Luton Building Services Ltd | Construction | 2020 |
| Luton Businesses Ltd | Real estate | 2020 |
| Luton CAB Centre Limited | Manufacturing | 2015 |
| Luton Car Parts Limited | Wholesale & retail | 2018 |
| Luton Carnival Arts Development Trust | Education | 1998 |
| Luton Cars Limited | Transport & logistics | 2023 |
| Luton Citizens Advice Bureau | Information & communication | 1997 |
| Luton Cleaning Services Ltd | Administrative & support | 2020 |
| Luton Coffee House Ltd | Hospitality | 2025 |
| Luton Comic CON CIC | Administrative & support | 2025 |
| Luton Community Arts Trust Limited | Health & social care | 1985 |
| Luton Community College Ltd | Education | 2025 |
| Luton Connect Taxis Ltd | Transport & logistics | 2023 |
| Luton Couriers Ltd | Transport & logistics | 2018 |
| Luton Creative Community CIC | Arts & recreation | 2023 |
| Luton Credit Hire Ltd | Other services | 2026 |
| Luton Cultural Services Trust | Arts & recreation | 2007 |
| Luton Dawah Academy Ltd | Health & social care | 2010 |
| Luton Death Committee | Other services | 2022 |
| Luton Dream Coffee Ltd | Hospitality | 2016 |
| Luton Driving School Ltd | Education | 2020 |
| Luton Easy Meet and Greet Ltd | Other services | 2011 |
| Luton Electrical Appliances Limited | Wholesale & retail | 2011 |
| Luton Electrical Factors Ltd | Construction | 2018 |
| Luton Electrical Services Limited | Construction | 2003 |
| Luton Energy Funding Ltd | Construction | 2023 |
| Luton Enterprises Ltd | Hospitality | 2025 |
| Luton Estate Agents Limited | Real estate | 2019 |
| Luton Express Ltd | Wholesale & retail | 2020 |
| Luton Family Mediation Ltd | Administrative & support | 2022 |
| Luton Fish & Chips Ltd | Hospitality | 2024 |
| Luton Fish Bar Ltd | Hospitality | 2017 |
| Luton Fitness Park CIC | Arts & recreation | 2026 |
| Luton Fresh Nann Ltd | Wholesale & retail | 2026 |
| Luton Fruit and VEG Ltd | Wholesale & retail | 2026 |
| Luton Garage Ltd | Wholesale & retail | 2025 |
| Luton Garage MOT Ltd | Wholesale & retail | 2026 |
| Luton Grappling Community Interest Company | Education | 2024 |
| Luton Grocery Market Limited | Wholesale & retail | 2022 |
| Luton Ground Builders Ltd | Construction | 2019 |
| Luton Group of Companies Limited | Financial services | 2022 |
| Luton Gymnacnics Ltd | Education | 2021 |
| Luton HAT Company Ltd | Other services | 2025 |
| Luton Heights Lettings Limited | Real estate | 2025 |
| Luton Heights Limited | Real estate | 2007 |
| Luton Home Improvement Limited | Other services | 2015 |
| Luton HOO Estate Electricity Limited | Energy | 2015 |
| Luton HOO Estate Nominees (NO.2) Limited | Agriculture & fishing | 2021 |
| Luton HOO Estate Nominees Limited | Real estate | 2020 |
| Luton HOO Farming Company Limited | Agriculture & fishing | 2003 |
| Luton Housing Group Limited | Real estate | 2016 |
| Luton Housing Services Ltd | Hospitality | 2025 |
| Luton Ideal Home Ltd | Real estate | 2025 |
| Luton Imperial Blinds Ltd | Construction | 2024 |
| Luton Internet Centre Ltd | Other services | 2015 |
| Luton Interpreting Services Limited | Professional & scientific | 2019 |
| Luton Investments Limited | Real estate | 2015 |
| Luton Irish Forum | Other services | 2005 |
| Luton Jets Sports CIC | Education | 2024 |
| Luton JIG and Tool Company Limited(The) | Manufacturing | 1956 |
| Luton JMT Community | Education | 2021 |
| Luton Kebab House Ltd | Hospitality | 2025 |
| Luton Labour Properties Limited | Real estate | 1931 |
| Luton Landlords & Letting Agents Limited | Administrative & support | 2021 |
| Luton Landscapes & Building Ltd | Construction | 2017 |
| Luton Launderette Limited | Other services | 2025 |
| Luton Law Centre | Professional & scientific | 1994 |
| Luton Law Ltd | Professional & scientific | 2022 |
| Luton Letting Agents Ltd | Real estate | 2012 |
| Luton Literature CIC | Information & communication | 2020 |
| Luton MAN and Van Removals Ltd | Transport & logistics | 2022 |
| Luton Mart Private Ltd | Wholesale & retail | 2017 |
| Luton Masonic Hall Company,Limited(The) | Other services | 1914 |
| Luton Minicabs Ltd | Administrative & support | 2017 |
| Luton Mobiles Ltd | Wholesale & retail | 2019 |
| Luton MOT & Servicing Centre Ltd | Wholesale & retail | 2002 |