| Liquipay Limited | Other services | 2016 |
| Lira Sterling Ltd | Real estate | 2019 |
| Lisa Doherty Coaching Ltd | Other services | 2024 |
| Lisa Hunt Associates Ltd | Wholesale & retail | 2013 |
| Lisa Nails 23 Ltd | Other services | 2025 |
| Lisa Technologies Ltd | Information & communication | 2012 |
| Lister Health & Wellness Limited | Health & social care | 2013 |
| LIT Infotech Ltd | Information & communication | 2022 |
| Lita Stays Ltd | Real estate | 2025 |
| Lita Stays Platform Ltd | Administrative & support | 2026 |
| Litchfield Flooring Ltd | Construction | 2023 |
| Liteminded Limited | Health & social care | 2025 |
| Literary Tapestry Ltd | Wholesale & retail | 2026 |
| Little Black Cat Ltd | Wholesale & retail | 2009 |
| Little Dragons Day Nursery Limited | Education | 2006 |
| Little Forest Childcare & Forest School Limited | Health & social care | 2022 |
| Little Giggles Play Hire Ltd | Administrative & support | 2026 |
| Little Green Engine Ltd | Manufacturing | 2020 |
| Little Italy Produce Ltd | Wholesale & retail | 2023 |
| Little Joys Club Ltd | Arts & recreation | 2025 |
| Little Knitters Ltd | Professional & scientific | 2025 |
| Little Learning LAB Ltd | Education | 2026 |
| Little Mouse Baby Clothing and Gifts Ltd | Wholesale & retail | 2017 |
| Little Offley Landscapes Limited | Administrative & support | 2002 |
| Little Poppets Interiors Limited | Wholesale & retail | 2026 |
| Little Ragamuffin Ltd | Wholesale & retail | 2012 |
| Little Red Diesel Limited | Information & communication | 2015 |
| Little Red HEN Day Nurseries Ltd | Administrative & support | 2008 |
| Little Steps Day Care Ltd | Education | 2015 |
| Little Zhezhe Trade Ltd | Wholesale & retail | 2024 |
| Littlebob Ltd | Wholesale & retail | 2018 |
| Littleford Links Limited | Professional & scientific | 2025 |
| LIV Construction Group Ltd | Construction | 2024 |
| LIV Drylining Ltd | Construction | 2024 |
| LIV Investments Ltd | Real estate | 2021 |
| LIV New Homes Limited | Construction | 2024 |
| Live Base Limited | Professional & scientific | 2012 |
| Live on Air Ltd | Information & communication | 2017 |
| Livecharge Ltd | Administrative & support | 2025 |
| Living Better Healthcare Ltd | Health & social care | 2023 |
| Living Futurists Limited | Real estate | 2018 |
| Living Needs Ltd | Real estate | 2021 |
| Living Your Life (Bedfordshire) CIC | Health & social care | 2019 |
| Livity Building Group Limited | Construction | 2020 |
| Livshare Housing and Consultancy Ltd | Construction | 2019 |
| Liyana International Ltd | Wholesale & retail | 2021 |
| LIZ Mcmahon Ltd | Professional & scientific | 2012 |
| Lj&U Quality Solutions Ltd | Professional & scientific | 2025 |
| LJB Leisure Limited | Hospitality | 2023 |
| LJI Transport Limited | Transport & logistics | 2024 |
| LJP Capital Ltd | Professional & scientific | 2025 |
| Ljph Contracting Limited | Construction | 2018 |
| LJR Jointing Ltd | Construction | 2018 |
| LJR Ventures Ltd | Real estate | 2022 |
| LK Properties Group Ltd | Real estate | 2026 |
| LK Rigging Services Ltd | Manufacturing | 2025 |
| LKG Accounts Limited | Professional & scientific | 2021 |
| LL Birmingham Limited | Arts & recreation | 2021 |
| LL Car Wash Ltd | Wholesale & retail | 2020 |
| LL Luton Ltd | Other services | 2022 |
| LLG Painters and Decorators Ltd | Construction | 2018 |
| LLJ Music Management Ltd | Arts & recreation | 2026 |
| Llmi Ltd | Construction | 2019 |
| Lloyd Cocks & Cattell Limited | Financial services | 2006 |
| Lloyd Court (Bedford) Management Company Limited | Households | 2025 |
| Lloyd Strategic Solutions Ltd | Information & communication | 2025 |
| Lloyds Grounds Maintenance Limited | Administrative & support | 2022 |
| LM Capital & Consultancy Ltd | Professional & scientific | 2026 |
| LM Fitness and Wellbeing Ltd | Arts & recreation | 2020 |
| LM Flooring Ltd | Wholesale & retail | 2024 |
| LM Global Properties Ltd | Real estate | 2016 |
| LM Lets Ltd | Real estate | 2025 |
| LM Transport Services Ltd | Transport & logistics | 2024 |
| Lmbt Limited | Transport & logistics | 2023 |
| LMK Studio London Ltd | Professional & scientific | 2026 |
| LMK Ventures Ltd | Real estate | 2024 |
| LMP Property Limited | Real estate | 2017 |
| LMS Property Services Limited | Construction | 2016 |
| Lmwd Engineering Ltd | Professional & scientific | 2018 |
| LN Management Limited | Administrative & support | 2012 |
| LN Safety Training Ltd | Education | 2018 |
| LNP Scaffolding Services Ltd | Construction | 2014 |
| Load 100 Limited | Information & communication | 2016 |
| Loadcell Calibration Services Limited | Administrative & support | 2015 |
| Lobo Enterprises Ltd | Real estate | 2026 |
| Local Media Publishing Ltd | Information & communication | 2013 |
| Lock Services Leighton Buzzard Ltd | Other services | 2026 |
| Lock Stock Storage Ltd | Transport & logistics | 2005 |
| Lockcraft Electrical Limited | Construction | 1987 |
| Lockdown Roller Doors Ltd | Construction | 2020 |
| Locke & England Auction Limited | Professional & scientific | 2003 |
| Lockfit (Bedford) Ltd | Construction | 2022 |
| Lockheed Martin UK Ampthill Group Limited | Professional & scientific | 2001 |
| Locumxperts Ltd | Administrative & support | 2022 |
| Lodgebook Limited | Real estate | 1995 |
| Lodgehill (Bedford) Ltd | Real estate | 1998 |
| Logic Skincare Ltd | Wholesale & retail | 2023 |
| Logicalgate Limited | Administrative & support | 2014 |
| Logistic and Delivery Services Ltd | Transport & logistics | 2025 |
| Lola Historic Racing Limited | Arts & recreation | 2024 |