| Lingfield News Limited | Wholesale & retail | 2003 |
| Lingoword Ltd | Education | 2011 |
| Linh ANH Ltd | Real estate | 2024 |
| Link Assist Recovery Limited | Administrative & support | 2019 |
| Link Care Providers Ltd | Other services | 2024 |
| Link COM Consulting Limited | Professional & scientific | 2015 |
| Link COM Group Limited | Financial services | 2025 |
| Link Fund Solutions Limited | Financial services | 1973 |
| Link Scheme Holdings Ltd | Administrative & support | 2016 |
| Link Scheme Ltd | Administrative & support | 2013 |
| Link Universal Limited | Education | 2010 |
| Link UP Mitaka Limited | Professional & scientific | 1984 |
| Linkali Limited | Information & communication | 2020 |
| Linked Hub Limited | Arts & recreation | 2022 |
| Linkedx Limited | Arts & recreation | 2021 |
| Linkfield Claims Service Limited | Professional & scientific | 2012 |
| Linking Estates Management Company Fairfield Court Limited | Real estate | 1997 |
| Linkrate Limited | Real estate | 1995 |
| Links Building Services Limited | Manufacturing | 2015 |
| Linkupone Properties Ltd | Construction | 2023 |
| Linkway Distribution Services Limited | Transport & logistics | 2002 |
| Linkwood Property Ltd | Real estate | 2019 |
| Linley's Builders (Leeds) Limited | Construction | 1980 |
| Linnecors Landscapes Ltd | Administrative & support | 2022 |
| Linnotax Stores Ltd | Wholesale & retail | 2026 |
| Linovelle Limited | Wholesale & retail | 2026 |
| Lintech (UK) Limited | Construction | 2014 |
| Lintel FM Group Ltd | Financial services | 2026 |
| Lintel Properties Ltd | Real estate | 2021 |
| Lintel Social Housing Ltd | Real estate | 2025 |
| Lintm Properties PVT Ltd | Real estate | 2023 |
| Linton Properties (UK) Limited | Real estate | 2004 |
| Linton Road Management Company Limited | Households | 1983 |
| Linton Springs Residential Management Company Limited | Households | 2011 |
| Linx Group UK Ltd | Information & communication | 2025 |
| Linx Hoardings Ltd | Construction | 2018 |
| Liomen Ltd | Manufacturing | 2018 |
| Lion Bridge Capital Limited | Financial services | 2026 |
| Lion Heating (Leeds) Ltd | Construction | 2021 |
| Lion Properties Limited | Real estate | 2016 |
| Lion Tiles Ltd | Wholesale & retail | 2019 |
| Lion Tiles Plus Limited | Wholesale & retail | 2024 |
| Lioncrest Retail Limited | Wholesale & retail | 2023 |
| Lionel D Levine & Co LLP | | 2006 |
| Lioness Wellness Ltd | Hospitality | 2019 |
| Lionheart Business Park Limited | Real estate | 2003 |
| Lionheart Property Group Ltd | Real estate | 2026 |
| Lions Corner Boxing Club Ltd | Arts & recreation | 2024 |
| Lions Creator Network Ltd | Professional & scientific | 2025 |
| Lions Property Maintenance Ltd | Construction | 2025 |
| Lionstone Security Ltd | Administrative & support | 2024 |
| LIP Stop & Aesthetic Supplies Ltd | Wholesale & retail | 2022 |
| Lipo Clinics Ltd | Other services | 2017 |
| Liptrots Properties Limited | Real estate | 2011 |
| Liqui-Box UK Limited | Manufacturing | 2011 |
| Liquid Art Group Limited | Hospitality | 2018 |
| Liquid Voice Limited | Information & communication | 2004 |
| Liquid Voice Maintenance Limited | Other services | 2007 |
| Liquid Voice Systems Limited | Wholesale & retail | 2009 |
| Liquid Wine I Limited | Administrative & support | 2010 |
| Liquor LAB Events Ltd | Hospitality | 2020 |
| Liquor Lounge Ltd | Hospitality | 2025 |
| Liquorlash Limited | Wholesale & retail | 2025 |
| Liquorz Ltd | Wholesale & retail | 2019 |
| Lisa Darwin Brand Holdings | Financial services | 2018 |
| Lisa Darwin Ventures Limited | Administrative & support | 2015 |
| Lisa Hawksworth Consulting Ltd | Professional & scientific | 2026 |
| Lisa Star Nails & Beauty HTN Ltd | Other services | 2017 |
| Lisboa Estates Ltd | Real estate | 2022 |
| Lisi Limited | Wholesale & retail | 2024 |
| Lisk Services Limited | Information & communication | 2015 |
| Listening PIG Communications Ltd | Professional & scientific | 2015 |
| Lister and Lister Design Limited | Wholesale & retail | 2015 |
| Lister Court (a) RTM Company Limited | Households | 2022 |
| Lister Court (B) RTM Company Limited | Households | 2022 |
| Lister House Limited | Health & social care | 1989 |
| Lister Investments Limited | Financial services | 2015 |
| Lister Locks Limited | Wholesale & retail | 1974 |
| Lister Media Ltd | Information & communication | 2023 |
| Lister Rawlins Consulting Limited | Professional & scientific | 2019 |
| Lister SLI Limited | Professional & scientific | 2014 |
| Lister Ventures | Professional & scientific | 2024 |
| Listers Court Management Company Limited | Households | 1990 |
| Lita Ancuta Ltd | Other services | 2025 |
| Litelly Limited | Information & communication | 2025 |
| Literally Thinking Ltd | Information & communication | 2020 |
| Lithium Health Ltd | Health & social care | 2019 |
| Lithuanian Community in Leeds Ltd | Other services | 2019 |
| Litlc Ltd | Administrative & support | 2026 |
| Litmus FM Services Limited | Professional & scientific | 2020 |
| Little Advocates Montessori Nursery Ltd | Health & social care | 2017 |
| Little and Company Property Investments Limited | Real estate | 2006 |
| Little and Large Properties (Leeds) Limited | Construction | 2009 |
| Little Angels Playzone Leeds Limited | Arts & recreation | 2018 |
| Little Angels Training Ltd | Administrative & support | 2025 |
| Little Arch Cafe Ltd | Hospitality | 2024 |
| Little Baltic Ltd | Manufacturing | 2025 |
| Little BAO BOY Holdings Ltd | Hospitality | 2021 |
| Little Beanies Childminders Limited | Health & social care | 2020 |
| Little Bear Childminding Ltd | Health & social care | 2026 |