| Ludford Finest Ltd | Hospitality | 2014 |
| Ludlam Joinery Ltd | Manufacturing | 2020 |
| Ludlow Burleigh Ltd | Wholesale & retail | 2024 |
| Ludlow MAX Limited | Wholesale & retail | 2023 |
| Ludus Associates Ltd | Education | 2018 |
| Ludworth Transport Ltd | Transport & logistics | 2014 |
| Luffy Ltd | Hospitality | 2019 |
| Luga Baruga Holdings Limited | Financial services | 2026 |
| Luga Baruga Limited | Professional & scientific | 2019 |
| Luggage & Bags Ltd | Wholesale & retail | 2015 |
| Lukas Kibler Ltd | Transport & logistics | 2018 |
| Lukas Number 1 Ltd | Transport & logistics | 2018 |
| Lukasz Wroblewski Ltd | Transport & logistics | 2016 |
| Lukaszolek Ltd | Transport & logistics | 2018 |
| Lukbiz Limited | Extraterritorial | 2015 |
| Luke Jones Logistics Ltd | Wholesale & retail | 2023 |
| Lukes Consulting Ltd | Professional & scientific | 2024 |
| Lukhaul Limited | Transport & logistics | 2025 |
| Luko Homes Limited | Manufacturing | 2023 |
| Luko Technical Draughting Services Ltd | Professional & scientific | 2021 |
| Luks Autohaus Ltd | Wholesale & retail | 2025 |
| Luks Motors Ltd | Wholesale & retail | 2019 |
| Luks Trading Ltd | Administrative & support | 2018 |
| Luktrans Ltd | Wholesale & retail | 2010 |
| Lulamile & Co Ltd | Wholesale & retail | 2025 |
| Lulee Ltd | Wholesale & retail | 2023 |
| Luluz Healthcare Ltd | Health & social care | 2019 |
| Lumaire Limited | Manufacturing | 2013 |
| Lumarch Medical Ltd | Wholesale & retail | 2025 |
| Lumbers Limited | Wholesale & retail | 1984 |
| Lumen Crest Media Limited | Wholesale & retail | 2026 |
| Lumenshore Limited | Information & communication | 2015 |
| Lumerè Ltd | Hospitality | 2024 |
| Lumica Limited | Information & communication | 2025 |
| Lumiere Estate Management Ltd | Households | 2025 |
| Lumina Collective C.I.C. | Public administration | 2025 |
| Lumina Consulting International Ltd | Professional & scientific | 2025 |
| Lumina Leadership Ltd | Administrative & support | 2025 |
| Luminae Limited | Wholesale & retail | 2025 |
| Luminaire Beauty and Aesthetics Ltd | Other services | 2023 |
| Lumincrestenterprise Ltd | Wholesale & retail | 2025 |
| Lumineva Beauty Limited | Wholesale & retail | 2025 |
| Luminos Cleaning Limited | Other services | 2019 |
| Luminous Locums Ltd | Health & social care | 2013 |
| Luminoxa Limited | Information & communication | 2026 |
| Lumos Fintech Ltd | Information & communication | 2024 |
| Lumy Ltd | Professional & scientific | 2024 |
| Luna Forest Ltd | Wholesale & retail | 2025 |
| Luna Fundare Construction Ltd | Construction | 2025 |
| Lunar Supplies Ltd | Wholesale & retail | 2022 |
| Lunas Kitchen LC Ltd | Hospitality | 2024 |
| Lunesdale Scriptorium Limited | Information & communication | 2020 |
| Lunivo.Co Limited | Wholesale & retail | 2026 |
| Lunsford Services Ltd | Wholesale & retail | 2014 |
| Luqmay Ltd | Education | 2021 |
| Lurex Finance Ltd | Administrative & support | 2016 |
| Lusby Opportunities Ltd | Transport & logistics | 2015 |
| Lush Fashion (Leic) Limited | Manufacturing | 2025 |
| Lush Fashion Ltd | Manufacturing | 2012 |
| Lush Tattoo Club Limited | Arts & recreation | 2023 |
| Lush Tresses Ltd | Other services | 2023 |
| Lushbykay Limited | Other services | 2025 |
| Lusis Designs Limited | Information & communication | 2011 |
| Luta Prestige Group Ltd | Transport & logistics | 2026 |
| Lutfur Yasin Ltd | Transport & logistics | 2021 |
| Luthra Logistics Ltd | Transport & logistics | 2017 |
| Lutterworth Country House Care Home Limited | Health & social care | 2011 |
| Lutterworth Logistics (Leicester) Ltd | Transport & logistics | 2017 |
| Lutterworth Logistics Limited | Transport & logistics | 2004 |
| Lutterworth Plumbing and Heating Ltd | Construction | 2016 |
| Lutterworth Road Management Co Limited | Real estate | 2005 |
| Lutterworth Van Centre Ltd | Wholesale & retail | 2023 |
| Luvera Car Rentals Ltd | Administrative & support | 2025 |
| Luvera Properties Ltd | Households | 2025 |
| LUX Bathrooms and Tiles Ltd | Wholesale & retail | 2021 |
| LUX Beauty Limited | Other services | 2017 |
| LUX Investment Properties Ltd | Real estate | 2024 |
| LUX Investments Holdings Limited | Financial services | 2024 |
| LUX Property Holdings Limited | Real estate | 2024 |
| Lux-Jet Aviation Limited | Transport & logistics | 2012 |
| Luxbrand LP | | 2017 |
| Luxe Aroma Limited | Wholesale & retail | 2024 |
| Luxe Bloom Beauty Ltd | Other services | 2024 |
| Luxe Build Ltd | Construction | 2020 |
| Luxe Esthetics Limited | Health & social care | 2020 |
| Luxe Italia Ltd | Wholesale & retail | 2021 |
| Luxe Knitting Limited | Manufacturing | 2024 |
| Luxe Manor Care Group Ltd | Health & social care | 2024 |
| Luxejet Aviation Limited | Transport & logistics | 2024 |
| Luxeoria Limited | Wholesale & retail | 2024 |
| Luxetrail Ltd | Hospitality | 2025 |
| Luxhairstyles Limited | Other services | 2026 |
| Luxora Residency Ltd | Households | 2024 |
| Luxuria Accommodations Limited | Hospitality | 2025 |
| Luxuria Cleaning & C0 Limited | Administrative & support | 2024 |
| Luxury Lets Lytham Limited | Real estate | 2015 |
| Luxury Lodge Escapes Ltd | Hospitality | 2021 |
| Luxury Nails 14 Ltd | Other services | 2024 |
| Luxury Venues Limited | Administrative & support | 2015 |
| Luxury Water Ltd | Manufacturing | 2019 |