| LE Petit Prince Patisserie Limited | Manufacturing | 2013 |
| LE Solutions 247 Limited | Wholesale & retail | 2025 |
| Leadshine Technology (Europe) Limited | Extraterritorial | 2011 |
| League Electrical Ltd | Construction | 2012 |
| Leah Fitness Ltd | Education | 2025 |
| Lean Marketing Systems Limited | Information & communication | 2012 |
| Lean MOT Limited | Professional & scientific | 2025 |
| Lean MOT SPV Ltd | Real estate | 2025 |
| Leap Academy Ltd | Education | 2021 |
| Leaphill Mews Management Company Limited | Households | 2011 |
| Learn & Rise CIC | Information & communication | 2022 |
| Learn Create Play Ltd | Education | 2013 |
| Learn I ED Limited | Education | 2021 |
| Learn ME Limited | Wholesale & retail | 2015 |
| Learn to Live Independent School Limited | Education | 2024 |
| Learndirect Digital Animal Welfare Limited | Financial services | 2021 |
| Learndirect Digital English Language Limited | Financial services | 2021 |
| Learndirect Digital Fitness Limited | Financial services | 2023 |
| Learndirect Digital Group Limited | Financial services | 2020 |
| Learndirect Digital Holdings Limited | Financial services | 2020 |
| Learndirect Digital HS Limited | Financial services | 2023 |
| Learndirect Limited | Information & communication | 2008 |
| Learndirect Smile Digital Limited | Financial services | 2021 |
| Learning to Live Ltd | Education | 2018 |
| Learning Transfer Limited | Professional & scientific | 2004 |
| Leasee Ltd | Real estate | 2018 |
| Leaseown Property Management Limited | Households | 1999 |
| Leatherbarrows Removals & Storage Limited | Other services | 1980 |
| Leave Wizard Limited | Information & communication | 2011 |
| Lebanese Cedars Limited | Hospitality | 2006 |
| Lecole Almond South West Ltd | Wholesale & retail | 2020 |
| Lecsys Limited | Information & communication | 2013 |
| Ledil Ltd | Wholesale & retail | 2025 |
| LEE Fisher Associates Ltd | Financial services | 2008 |
| LEE Marketing Consultancy Ltd | Water & waste | 2025 |
| LEE Smith Property Ltd | Real estate | 2016 |
| Leemark Services Limited | Administrative & support | 2007 |
| Left Comms Limited | Information & communication | 2021 |
| Legacy Capital Worldwide Limited | Households | 2019 |
| Legacy Cleaning Services Limited | Administrative & support | 2022 |
| Legacy Consulting Ltd | Health & social care | 2015 |
| Legacy Cover Ltd | Financial services | 2025 |
| Legacy Health and Social Care Ltd | Health & social care | 2023 |
| Legal Property Limited | Real estate | 1999 |
| Legalmoney Limited | Financial services | 2002 |
| Legatus Property Ltd | Real estate | 2024 |
| Legends Bournemouth Ltd | Hospitality | 2025 |
| Legends Services Limited | Professional & scientific | 2015 |
| Legri Management Ltd | Professional & scientific | 2025 |
| Leighton Marine Ltd | Manufacturing | 2023 |
| Lelola Limited | Real estate | 2021 |
| Lelola Lodge Ltd | Real estate | 2023 |
| Lelola Luxury Retreats Ltd | Real estate | 2021 |
| Lelola Management Ltd | Real estate | 2023 |
| Lelola Mayfair Ltd | Hospitality | 2024 |
| Lemon Tree House Limited | Construction | 2004 |
| Lemonshine Ltd | Wholesale & retail | 2021 |
| Lempson Limited | Arts & recreation | 2025 |
| Lena Consulting Services Ltd | Wholesale & retail | 2020 |
| Lena Global Ltd | Manufacturing | 2024 |
| Lenart Electrical Services Ltd | Construction | 2022 |
| Lencon Ltd | Professional & scientific | 2023 |
| Lender Panel.Com Ltd | Professional & scientific | 2026 |
| Lennox Lewis Investments Ltd | Financial services | 2023 |
| LEO Cafe Limited | Hospitality | 2017 |
| LEO Properties Southwest Limited | Real estate | 2025 |
| Leofry Ltd | Wholesale & retail | 2023 |
| Leona's Lunch in OUT Ltd | Hospitality | 2025 |
| Leonardos Empire Ltd | Real estate | 2022 |
| Leopard Estates Limited | Real estate | 2019 |
| Leopard Homes Limited | Real estate | 1995 |
| Leosebascare Ltd | Wholesale & retail | 2018 |
| Leot Ltd | Hospitality | 2020 |
| LES Mirabelles Limited | Hospitality | 1994 |
| Lesea Ltd | Administrative & support | 2019 |
| Leslie Construction Limited | Professional & scientific | 2020 |
| Lesney Holdings Limited | Financial services | 2024 |
| Lesney IP Limited | Administrative & support | 2024 |
| Lesney Property Holdings Limited | Real estate | 2024 |
| Lester Aldridge LLP | | 2006 |
| Lester Aldridge Trust Corporation Limited | Professional & scientific | 1995 |
| Let's Pretend I Could Ltd | Professional & scientific | 2019 |
| Letme Property Management Ltd | Households | 2020 |
| Letop Ltd | Wholesale & retail | 2025 |
| Lets Talk Balls Limited | Wholesale & retail | 2026 |
| Letterlab Ltd | Administrative & support | 2025 |
| Lettinotannare Ltd | Other services | 2024 |
| LEV & LEV Limited | Information & communication | 2025 |
| Levant (Dorset) Limited | Hospitality | 2020 |
| Levant Bournemouth Limited | Hospitality | 2011 |
| Level UP Wellness and Recovery Ltd | Health & social care | 2024 |
| Level UPZ Limited | Hospitality | 2025 |
| Leveled Ltd | Manufacturing | 2024 |
| Levell Property Ltd | Construction | 2025 |
| Leven Hall Management Ltd | Households | 2007 |
| Levil Homes Ltd | Construction | 2025 |
| Levil Ltd | Construction | 2024 |
| Levys Accountants Limited | Professional & scientific | 2019 |
| LEW Kosk Ltd | Manufacturing | 2022 |
| LEW Plumbing Ltd | Construction | 2010 |