| Larisa’S Dream Ltd | Transport & logistics | 2024 |
| Larissa London Limited | Real estate | 2021 |
| Larizia Retail Limited | Wholesale & retail | 2021 |
| Lark Investments (UK) 2 Limited | Other services | 2014 |
| Lark Investments (UK) Limited | Administrative & support | 2014 |
| Larkfield BI Ltd | Information & communication | 2026 |
| Larkin Property Partners Ltd | Real estate | 2026 |
| Larkspeed Limited | Wholesale & retail | 1992 |
| Larp Investments Limited | Real estate | 2025 |
| Larry K Enterprises Limited | Wholesale & retail | 2025 |
| Larson Resource Group Limited | Administrative & support | 2007 |
| Lartersmith Limited | Professional & scientific | 2017 |
| Larvita Leeds Limited | Transport & logistics | 2017 |
| Larz MV | Financial services | 2021 |
| Lasa Creative Solutions Ltd | Professional & scientific | 2023 |
| Lasagnas on the Road Limited | Hospitality | 2021 |
| Laser Adventures Limited | Arts & recreation | 1998 |
| Laser and Beauty Specialists Ltd | Other services | 2023 |
| Laser and Light Skin Clinic Ltd | Other services | 2025 |
| Laser Dog Game DEV Ltd | Information & communication | 2022 |
| Laser Dog Games Limited | Information & communication | 2012 |
| Laser on Tour Leeds Limited | Other services | 2025 |
| Laser YOU Ltd | Other services | 2023 |
| Laserclear Leeds Ltd | Other services | 2020 |
| Lasermen UK Limited | Other services | 2023 |
| Laserslim Cosmetic Services Limited | Health & social care | 2007 |
| Lash Authority Ltd | Wholesale & retail | 2018 |
| Lash Cartelll Ltd | Other services | 2022 |
| Lash Company Ltd | Extraterritorial | 2017 |
| Lashed Leeds Limited | Other services | 2017 |
| Lashfb Limited | Wholesale & retail | 2023 |
| Lasik Holdings Limited | Financial services | 2025 |
| Lasiv Technologies Ltd | Information & communication | 2021 |
| Lasmoj Enterprise Limited | Health & social care | 2021 |
| Last Line Books and Music Limited | Information & communication | 2023 |
| Last MAN Standing HQ Limited | Information & communication | 2025 |
| Last Mile Delivery Ltd | Transport & logistics | 2013 |
| Last Minute Reports Ltd | Professional & scientific | 2025 |
| Last Minute Transport Ltd | Transport & logistics | 2025 |
| Lastaura Ltd | Wholesale & retail | 2026 |
| Lastimrose Ltd | Wholesale & retail | 2025 |
| Latamtiger Limited | Administrative & support | 2016 |
| Late Night Agency Ltd | Professional & scientific | 2018 |
| Later Life Estate Planning Limited | Financial services | 2026 |
| Later Life Financial Solutions Ltd | Financial services | 2024 |
| Lateral Resilience Ltd | Construction | 2022 |
| Lateral Thinking Ortho Limited | Wholesale & retail | 2024 |
| Latimers of York Limited | Financial services | 2018 |
| Latin Bites Ltd | Hospitality | 2015 |
| Latina Foods International Limited | Wholesale & retail | 2014 |
| Latina Foods Limited | Wholesale & retail | 2011 |
| Latitude 43 Limited | Professional & scientific | 2025 |
| Latitude Wine Limited | Wholesale & retail | 2010 |
| LATITUDE53 Ltd | Information & communication | 2018 |
| Latj Ltd | Manufacturing | 2026 |
| Latria Homes Limited | Health & social care | 2025 |
| Lattice People Limited | Professional & scientific | 2018 |
| LAU Presents Ltd | Professional & scientific | 2026 |
| Lauden Chocolate Limited | Manufacturing | 2008 |
| Laugh and Learn Childcare Yorkshire Ltd | Education | 2023 |
| Laugh at Leeds Limited | Education | 2024 |
| Launch Engineering Limited | Professional & scientific | 2019 |
| Launchpoint Ltd | Extraterritorial | 2023 |
| Laundromaid Limited | Other services | 2025 |
| Laundromutt Ltd | Administrative & support | 2024 |
| Laundry LAB Leeds Limited | Other services | 2022 |
| Laundry Lounge CA Ltd | Other services | 2026 |
| Laura Ashley Holdings PLC | Professional & scientific | 1971 |
| Laura Elson Consulting Ltd | Professional & scientific | 2019 |
| Laura Franklin Rehab Ltd | Health & social care | 2011 |
| Laura Mcleod Ltd | Education | 2016 |
| Laura Mellors Coaching Ltd | Arts & recreation | 2024 |
| Laura Silcock Limited | Professional & scientific | 2003 |
| Laura's Confectionery Ltd | Wholesale & retail | 2016 |
| Laura's Little Explorers Ltd | Health & social care | 2025 |
| Lauramer Limited | Transport & logistics | 2025 |
| Laurel & Green Limited | Other services | 2025 |
| Laurel Family Investments | Financial services | 2024 |
| Laurel Management (East Keswick) Limited | Households | 1990 |
| Laurel One Consultants Ltd | Professional & scientific | 2025 |
| Lauren Angelica Aesthetics Ltd | Other services | 2024 |
| Lauren Hall Design Limited | Professional & scientific | 2024 |
| Lauren India Malone Ltd | Health & social care | 2024 |
| Lauren Moriarty & Co Ltd | Manufacturing | 2005 |
| Lauren Morley Property Ltd | Real estate | 2026 |
| Laurence Digital Limited | Information & communication | 2004 |
| Lauriston Developments Ltd | Professional & scientific | 2004 |
| Laurum House Ltd | Real estate | 2026 |
| Lavandula Support Services Ltd | Health & social care | 2024 |
| Lavastone Properties Ltd | Real estate | 2022 |
| Lavee Solar Limited | Wholesale & retail | 2024 |
| Laverack Developments Limited | Construction | 2024 |
| Lavery Courier Services Ltd | Transport & logistics | 2026 |
| Lavi Cleaning Ltd | Administrative & support | 2025 |
| Lavion Educational Consultancy Ltd | Professional & scientific | 2026 |
| Lavish Aesthetics Limited | Health & social care | 2022 |
| Lavish Little Style Limited | Wholesale & retail | 2017 |
| Lavishera Ltd | Professional & scientific | 2025 |
| Lavishly Blessed Ltd | Health & social care | 2020 |
| Law Hill Imaging Limited | Health & social care | 2018 |