| Little Portugal Delícias Ltd | Wholesale & retail | 2024 |
| Little Red Dog Ltd | Professional & scientific | 2025 |
| Little Seagull Ltd | Information & communication | 2020 |
| Little Stars Nursery JT Ltd | Health & social care | 2009 |
| Little Sunshine Childminder Ltd | Health & social care | 2025 |
| Little Sutton Dental Practice Ltd | Health & social care | 2020 |
| Little Sweet Things Limited | Wholesale & retail | 2025 |
| Little Turtle Swim Company Limited | Arts & recreation | 2009 |
| Little Twigs Play Cafe Limited | Hospitality | 2026 |
| Little Whales Limited | Education | 2014 |
| Littles & Laughs Ltd | Health & social care | 2022 |
| Livan Service Ltd | Construction | 2022 |
| Live and LET Property Ltd | Real estate | 2020 |
| Live Like Home Limited | Real estate | 2023 |
| Lived Voices CIC | Public administration | 2026 |
| Livelines UK Limited | Administrative & support | 2001 |
| Liverpool Bulk Liquids Limited | Transport & logistics | 1998 |
| Living Reasons Ltd | Real estate | 2024 |
| Living Sphere Ltd | Real estate | 2025 |
| Living Well Occupational Therapy Community Interest Company | Health & social care | 2019 |
| Livingstone Law LLP | | 2013 |
| Liviuexcavation Ltd | Construction | 2025 |
| Livora Events Limited | Professional & scientific | 2024 |
| LIZ EX Ltd | Transport & logistics | 2025 |
| Lizzy Temiayo Ltd | Health & social care | 2015 |
| Lizzymor Ltd | Administrative & support | 2024 |
| LJ Carpets Ltd | Construction | 2020 |
| Lj's Haulage LLP | | 2008 |
| LJA Roofing Ltd | Construction | 2020 |
| LJB Hospitality Ltd | Hospitality | 2026 |
| LJC Brickwork Ltd | Construction | 2022 |
| LJC Management Services Ltd | Construction | 2024 |
| LJL Cleaning Services Ltd | Administrative & support | 2025 |
| LJL Property Maintenance Ltd | Construction | 2016 |
| LJM Building & Construction Services Limited | Construction | 2018 |
| Ljmmb Company Ltd | Hospitality | 2026 |
| LJS Decorating Limited | Construction | 2025 |
| LJT Car Sales Ltd | Wholesale & retail | 2023 |
| LJW Property Ltd | Real estate | 2019 |
| LKM Services Ltd | Construction | 2023 |
| LL Cleaning Services Limited | Administrative & support | 2019 |
| Llama Lettings Limited | Real estate | 2019 |
| Llefdas Limited | Real estate | 2017 |
| Lloyd Arboriculture Consultants Ltd | Agriculture & fishing | 2023 |
| Lloyd Arts LLP | | 2022 |
| Lloyd Electrics Limited | Construction | 2025 |
| Lloyd Parcs Holding Ltd | Financial services | 2024 |
| Lloyd Parcs Ltd | Real estate | 2024 |
| Llumi Cafe Ltd | Hospitality | 2026 |
| Llwyn Filly Limited | Professional & scientific | 2020 |
| LM Casa Ltd | Wholesale & retail | 2025 |
| LM Metals Limited | Other services | 2020 |
| LM Wellbeing Ltd | Other services | 2026 |
| LM2 Global Research Limited | Information & communication | 2023 |
| LMC Electrical and Property Services Ltd | Construction | 2023 |
| LME Developments Limited | Construction | 2024 |
| LME Properties Limited | Real estate | 2020 |
| LME Solutions Ltd | Construction | 2025 |
| LMJ Rentals Limited | Real estate | 2025 |
| LMK Property Developments Ltd | Real estate | 2025 |
| LML Services Limited | Wholesale & retail | 2021 |
| Lmnoriginalprojects Ltd | Construction | 2025 |
| LMR Consulting Ltd | Information & communication | 2014 |
| LMS Professional Consulting Ltd | Health & social care | 2023 |
| LMV Brickwork Ltd | Construction | 2020 |
| LMV Developments Ltd | Construction | 2025 |
| LMV Investments Ltd | Real estate | 2024 |
| LNJ Auctions Ltd | Wholesale & retail | 2016 |
| LNL Haulage Ltd | Transport & logistics | 2022 |
| Loadcircle Ltd | Transport & logistics | 2026 |
| Loca Ventures Advancements Ltd | Extraterritorial | 2014 |
| Loca Ventures Limited | Hospitality | 2012 |
| Local Customers on TAP Ltd | Professional & scientific | 2023 |
| Locally Sourced Limited | Wholesale & retail | 2015 |
| Lock Escalation Limited | Information & communication | 2022 |
| Lockedless Limited | Wholesale & retail | 2025 |
| Lockes Hair Salon Limited | Administrative & support | 2016 |
| Locking Estates Limited | Real estate | 2005 |
| Locumlinx Limited | Administrative & support | 2003 |
| Loddon Mill Enterprises Limited | Agriculture & fishing | 2008 |
| Loddon Mill Holdings Limited | Agriculture & fishing | 2020 |
| Lodge Farm Storage Ltd | Administrative & support | 2018 |
| Lodge Mortgage and Protection Limited | Financial services | 2020 |
| Lodge Park Construction Limited | Construction | 2007 |
| Lodge Park Holdings Limited | Professional & scientific | 2013 |
| Lodge Park Limited | Construction | 2002 |
| Lodge Park Partnership Homes Limited | Construction | 2011 |
| Lodge Park ST Crispins Limited | Real estate | 2011 |
| Loftex Ltd | Construction | 2012 |
| Loftus Property Ltd | Real estate | 2025 |
| Logan GW Media Ltd | Information & communication | 2025 |
| Logendrans Eyecare Limited | Health & social care | 2015 |
| Logi Labs Ltd | Information & communication | 2026 |
| Logic Control Solutions Limited | Information & communication | 1998 |
| Logic Integration Limited | Information & communication | 1998 |
| Logic Wave Technologies Ltd | Information & communication | 2024 |
| Logical Health Solutions Ltd | Health & social care | 2011 |
| Login Plant & Motors Ltd | Wholesale & retail | 2018 |
| Loginstransport Ltd | Transport & logistics | 2026 |
| Logistic Drive Ltd | Transport & logistics | 2019 |