| Legacy Healthcare Limited | Health & social care | 2013 |
| Legacy Living Publishing Ltd | Information & communication | 2019 |
| Legacy Making Ltd | Professional & scientific | 2023 |
| Legacy Property Estate Investments Ltd | Real estate | 2024 |
| Legado LLP | | 2018 |
| Legal Billing Solutions Limited | Professional & scientific | 2023 |
| Legal Connect Ltd | Information & communication | 2023 |
| Legal Experts Global Limited | Other services | 2024 |
| Legal Marketing Assist Limited | Professional & scientific | 2023 |
| Legatum Planning Ltd | Professional & scientific | 2022 |
| Legatum Probate Ltd | Extraterritorial | 2022 |
| Legendry Living Ltd | Wholesale & retail | 2018 |
| Legends Beeston Ltd | Hospitality | 2021 |
| Legends Gym Nottingham Ltd | Other services | 2019 |
| Legge Infrastructure Services Limited | Hospitality | 2017 |
| Legge IT Services Limited | Information & communication | 2023 |
| Legitnook Ltd | Wholesale & retail | 2025 |
| LEH Bridgewater Limited | Arts & recreation | 1996 |
| Lehajo Developments Ltd | Real estate | 2023 |
| Lehev Ltd | Wholesale & retail | 2014 |
| Lehmann Engineering Ltd | Manufacturing | 2023 |
| Leibert Pharma Services Ltd | Professional & scientific | 2010 |
| Leibert Respiratory Ltd | Professional & scientific | 2026 |
| Leicester Air Conditioning Limited | Construction | 2016 |
| Leicester Catering Engineers Ltd | Manufacturing | 2017 |
| Leicester Ford Limited | Wholesale & retail | 2004 |
| Leicester Lift (Midco) Limited | Professional & scientific | 2003 |
| Leicester Lift Company Limited | Professional & scientific | 2003 |
| Leicester Lift Midco (NO.2) Limited | Professional & scientific | 2009 |
| Leicester Lift Project Company (NO. 1) Limited | Administrative & support | 2003 |
| Leicester Lift Project Company (NO.2) Limited | Real estate | 2009 |
| Leigh Morris Building and Joinery Limited | Construction | 2025 |
| Leighthal Promotions Limited | Arts & recreation | 2019 |
| Leighthal Properties Limited | Real estate | 2022 |
| Leighton Chambers Limited | Construction | 2022 |
| Leilanna Property Limited | Real estate | 2026 |
| Leimira Ltd | Arts & recreation | 2025 |
| Leisco Limited | Hospitality | 2011 |
| Leisure & Adventure Group Ltd. | Wholesale & retail | 2021 |
| Leisure Care Homes Limited | Health & social care | 1999 |
| Leisure Depot Limited | Wholesale & retail | 2024 |
| Leisure Holidays Ltd | Hospitality | 2024 |
| Leisure Industry Supplies Ltd | Financial services | 2023 |
| Leisure Lites Ltd | Manufacturing | 2003 |
| Leisure Maintenance (Nottingham) Limited | Administrative & support | 2008 |
| Leisure Maintenance Services Limited | Manufacturing | 1996 |
| Leisure Safety Training Limited | Administrative & support | 2011 |
| Leisure Space Consulting Limited | Administrative & support | 2019 |
| Leisureline Limited | Professional & scientific | 2021 |
| Leisuretech Ltd | Professional & scientific | 2025 |
| Leith & Co-Pts. Ltd | Construction | 2019 |
| Leithbridge Mackenzie Property Group Ltd | Real estate | 2019 |
| Leivers & Vale Ltd | Construction | 2024 |
| Leivers Ltd | Construction | 2023 |
| Lejgend Holdings Limited | Financial services | 2024 |
| Lell Housing Limited | Real estate | 2022 |
| LEM IT Ltd | Information & communication | 2022 |
| Lember 1 Limited | Information & communication | 2024 |
| Lemdn (UK) Ltd | Health & social care | 2018 |
| Lemic Consulting Ltd | Professional & scientific | 2024 |
| Lemiyu Ltd | Information & communication | 2024 |
| Lemon Badger Services Ltd | Professional & scientific | 2025 |
| Lemon Fresh Sparkling Clean Ltd | Administrative & support | 2025 |
| Lemon Tech Solutions Ltd | Transport & logistics | 2019 |
| Lemon Tree Tea Ltd | Hospitality | 2024 |
| Lemonade Governance & Case Management Ltd | Professional & scientific | 2026 |
| Lemsey Ltd | Health & social care | 2022 |
| Lena PL Limited | Education | 2012 |
| Lenco International Limited | Other services | 2011 |
| Lengthmen Limited | Professional & scientific | 2025 |
| Leni Services Limited | Health & social care | 2025 |
| Lenison Ltd | Information & communication | 2024 |
| Lennox Properties (Doncaster) Ltd | Households | 2003 |
| Lenora Hill Ltd | Real estate | 2023 |
| Lens Change Ltd | Information & communication | 2015 |
| Lensfayre Ltd | Wholesale & retail | 2019 |
| Lensiq Ltd. | Professional & scientific | 2021 |
| Lenton and Wilkinson, Limited | Real estate | 1950 |
| Lenton Business Services Ltd | Professional & scientific | 2024 |
| Lenton Electrical Supplies Limited | Wholesale & retail | 1991 |
| Lenton Estates Limited | Real estate | 2024 |
| Lenton Fish Bar Ltd | Hospitality | 2025 |
| Lenton Homes Limited | Real estate | 2022 |
| Lenton House Management Company Limited | Households | 1999 |
| Lenton Lane Management Company Limited | Administrative & support | 2014 |
| Lenton Liberal Club Company,Limited(The) | Other services | 1881 |
| Lenton Luxe Ltd | Construction | 2025 |
| Lenton Manor Limited | Households | 1985 |
| Lenton Marine Limited | Administrative & support | 2025 |
| Lenton Sands Ltd | Real estate | 2019 |
| Lenton Steel Supplies Ltd | Wholesale & retail | 2020 |
| Lenton Store OFF Licence Ltd | Wholesale & retail | 2024 |
| Lenton Vitamin & Skin Clinic Ltd | Health & social care | 2025 |
| Lentoncliffe Management Limited | Professional & scientific | 1986 |
| LEO 5 Limited | Hospitality | 2025 |
| LEO Beauty 0109 Ltd | Other services | 2025 |
| LEO General Building Ltd | Construction | 2022 |
| LEO Legaltech Limited | Information & communication | 2020 |
| Leo's Motors (UK) Ltd | Wholesale & retail | 2014 |
| Leo's Paint Club Limited | Health & social care | 2023 |