| Luxe Reside Estates Ltd | Real estate | 2024 |
| Luxe Threads Limited | Manufacturing | 2025 |
| Luxetouch Limited | Administrative & support | 2025 |
| Luxevilla Properties Ltd | Real estate | 2024 |
| Luxey Ltd | Administrative & support | 2010 |
| Luxio Life Ltd | Real estate | 2018 |
| Luxio Student Mansions Limited | Real estate | 2017 |
| Luxmo Stores Ltd | Wholesale & retail | 2025 |
| Luxnest Pro Services Ltd | Administrative & support | 2026 |
| Luxoft Development 2 Ltd | Construction | 2023 |
| Luxor Gate Health Care Services. Limited | Health & social care | 2024 |
| Luxurai Media Ltd | Professional & scientific | 2025 |
| Luxury 2025 Cars Ltd | Transport & logistics | 2025 |
| Luxury Accommodations Ltd | Real estate | 2025 |
| Luxury Beauty & Spa Services Limited | Other services | 2017 |
| Luxury Breaks Limited | Extraterritorial | 2010 |
| Luxury Buy Hub Ltd | Wholesale & retail | 2025 |
| Luxury Deluxe Boxes & Co Ltd | Wholesale & retail | 2025 |
| Luxury Hair Quarters Ltd | Other services | 2023 |
| Luxury Haven Ltd | Wholesale & retail | 2023 |
| Luxury Housing Ltd | Real estate | 2024 |
| Luxury Jewellery Shop Ltd | Wholesale & retail | 2023 |
| Luxury Kleaning Services Ltd | Administrative & support | 2026 |
| Luxury Life Estates Ltd | Real estate | 2025 |
| Luxury Lodges Limited | Real estate | 2010 |
| Luxury Nails Ltd | Other services | 2016 |
| Luxury Retail Briggate Limited | Wholesale & retail | 2022 |
| Luxury Retail Holdings Limited | Financial services | 2020 |
| Luxury Showcase Hire Ltd | Professional & scientific | 2022 |
| Luxury Stay Accommodation Limited | Real estate | 2024 |
| Luxury Travel Emporium Ltd | Other services | 2024 |
| Luxury&Company Limited | Hospitality | 2019 |
| Luxuryview Ltd | Real estate | 2025 |
| Luxx Properties Ltd | Real estate | 2024 |
| Luxè Tanz Leeds Limited | Other services | 2025 |
| LV & HV Commissioning Services Ltd | Professional & scientific | 2023 |
| LVC Vans Ltd | Wholesale & retail | 2023 |
| LVF Holdings Limited | Financial services | 2012 |
| LVF Packaging Ltd | Manufacturing | 1999 |
| LVG Consulting Ltd | Professional & scientific | 2017 |
| LVL UP Creator Network Ltd | Professional & scientific | 2025 |
| LW Contracting Services Ltd | Construction | 2020 |
| LW Law Limited | Professional & scientific | 2023 |
| LW Locksmiths Ltd | Manufacturing | 2026 |
| LW Prosthodontic Services Limited | Health & social care | 2025 |
| LW Security Systems Ltd | Administrative & support | 2026 |
| Lwassess Solutions Ltd | Health & social care | 2022 |
| LWB Sports Limited | Hospitality | 2018 |
| Lwbc Limited | Professional & scientific | 2007 |
| LWC Property Ltd | Arts & recreation | 2019 |
| Lwyr Limited | Professional & scientific | 2009 |
| LXS Investments | Financial services | 2014 |
| LXY Limited | Wholesale & retail | 2010 |
| LYA Property Limited | Real estate | 2022 |
| Lycett Media Ltd | Administrative & support | 2022 |
| Lycons Limited | Professional & scientific | 2024 |
| Lydia Beauty and Accessories Ltd | Wholesale & retail | 2016 |
| Lydon Developments Limited | Real estate | 2017 |
| Lyel Accountants Ltd | Professional & scientific | 2018 |
| Lymm SK Local Ltd | Wholesale & retail | 2024 |
| Lynch Carpentry Solutions Ltd | Construction | 2025 |
| Lynch Renovation & Development Ltd | Construction | 2022 |
| Lynda LEE Consulting Ltd | Health & social care | 2013 |
| Lyndel Properties Limited | Extraterritorial | 2025 |
| Lynen UK Ltd | Wholesale & retail | 2020 |
| Lynfield (Midlands) Ltd | Real estate | 2023 |
| Lynk-X Ltd | Extraterritorial | 2025 |
| Lynn & Jones (Holdings) Limited | Real estate | 2005 |
| Lynn & Jones Limited | Financial services | 2019 |
| Lynn & Jones Storefitters Limited | Construction | 1984 |
| Lynn Henry Limited | Real estate | 2009 |
| Lynn Hurst & Co. Ltd. | Professional & scientific | 2018 |
| Lynn's Bars Limited | Hospitality | 2023 |
| Lynthorne (Holdings) Limited | Real estate | 2012 |
| Lynx AI Ltd | Information & communication | 2025 |
| Lynx Capital Ltd | Professional & scientific | 2018 |
| Lynx Construction Limited | Construction | 2016 |
| Lyons Management Consultancy Limited | Professional & scientific | 2009 |
| Lyons Recruitment Limited | Administrative & support | 2009 |
| Lyrelia Developments Ltd | Real estate | 2022 |
| Lyte UP Ltd | Manufacturing | 2025 |
| Lythra Ltd | Wholesale & retail | 2026 |
| Lytona Ltd | Construction | 2022 |
| LZB Energi Services Ltd | Other services | 2025 |
| LZH Developments Ltd | Real estate | 2025 |
| LZN Limited | Administrative & support | 2003 |
| LZR Construction Ltd | Construction | 2025 |
| LZS Autobody Repairs Ltd | Wholesale & retail | 2025 |
| Lzzd Limited | Wholesale & retail | 2008 |
| M & a Capital Ltd | Real estate | 2018 |
| M & a Clinical Limited | Health & social care | 2025 |
| M & a Construction (Leeds) Limited | Construction | 2016 |
| M & a Designs Limited | Manufacturing | 2003 |
| M & a Foodexpress Ltd | Wholesale & retail | 2023 |
| M & a Health Limited | Health & social care | 2025 |
| M & a W Property Ltd | Real estate | 2024 |
| M & B Developments Limited | Construction | 2004 |
| M & B Practices Limited | Health & social care | 2011 |
| M & B Real Estate Leeds Limited | Real estate | 2025 |
| M & C Evans Property Management Ltd | Real estate | 2023 |