| Kuklis of London LLP | | 2020 |
| Kulenzo Ltd | Professional & scientific | 2014 |
| Kunaweb Limited | Information & communication | 2025 |
| KX Labs Ltd | Manufacturing | 2026 |
| Kyonithebrand Ltd | Wholesale & retail | 2024 |
| L & W Scaffolding Ltd | Construction | 2018 |
| L&F Mechanical Ltd | Construction | 2019 |
| L&S Fire Protection Service Ltd | Construction | 2020 |
| Labby African Foods Ltd | Wholesale & retail | 2025 |
| Labsquared Limited | Wholesale & retail | 2019 |
| Labstom Catering Services Ltd | Hospitality | 2026 |
| Ladel Services Limited | Real estate | 2017 |
| Ladents Consulting Ltd | Professional & scientific | 2018 |
| Lafunky Ventures Limited | Other services | 2021 |
| Lagbem Healthcare Services Limited | Health & social care | 2022 |
| Lagos State APC UK Ltd | Other services | 2023 |
| Laifa Arbitrage Ltd | Wholesale & retail | 2022 |
| Laing and SON Ltd | Construction | 2025 |
| Lajokesfashion London Limited | Wholesale & retail | 2016 |
| LAK Group Ltd | Professional & scientific | 2021 |
| Lakh Properties Ltd | Real estate | 2023 |
| Laly Daily Essentials Limited | Manufacturing | 2025 |
| LAM PHU Ltd | Wholesale & retail | 2023 |
| Lamorenet Property Ltd | Real estate | 2024 |
| Lamour Care Services Ltd | Health & social care | 2026 |
| Lamsbash Ltd | Information & communication | 2024 |
| Landmark Recruitment Limited | Administrative & support | 2023 |
| Langford & Chamberlayne Limited | Wholesale & retail | 1959 |
| Lanix Property & Accommodation Ltd | Administrative & support | 2018 |
| Lankan Imaginative & Foremost Events (Life) Limited | Arts & recreation | 2010 |
| Lankyop Security Solutions Limited | Administrative & support | 2019 |
| Laser Beauty Solutions Ltd | Other services | 2014 |
| Latch 'N' Go Ltd. | Arts & recreation | 2019 |
| Lauriann's Stem Club CIC | Education | 2022 |
| Lavalicious Ltd | Hospitality | 2023 |
| Lavin Commercial Ltd | Construction | 2013 |
| Law and Commercial Accounting Services Limited | Professional & scientific | 2016 |
| Layotee Travels & Tours Limited | Administrative & support | 2024 |
| Lazeez Ltd | Information & communication | 2025 |
| LCE Technology Limited | Information & communication | 2010 |
| LCG Power Ltd | Administrative & support | 2021 |
| LCN Group Ltd | Construction | 2019 |
| LCR QA Tech Solutions Ltd | Professional & scientific | 2024 |
| Ldee Methods Limited | Professional & scientific | 2013 |
| LDG Plumbing Ltd | Construction | 2019 |
| LDN (UK) Limited | Construction | 2012 |
| Leaders Business Support Services Limited | Administrative & support | 2017 |
| Leadership Technology Ltd | Wholesale & retail | 2018 |
| LEE Campbell Limited | Construction | 2009 |
| Legacy Chauffeur Services Limited | Transport & logistics | 2025 |
| Leigh Consult Ltd | Administrative & support | 2024 |
| Lemboss Limited | Other services | 1980 |
| LEO B Ltd | Construction | 2020 |
| LEO Digital Ltd | Wholesale & retail | 2019 |
| LES Lifts Ltd | Manufacturing | 2025 |
| LEZ PCO Car Hire Ltd | Administrative & support | 2018 |
| Librano Trading & Financials Ltd | Financial services | 2024 |
| Libsuk Ltd | Information & communication | 2011 |
| Licence to Play Ltd | Administrative & support | 2023 |
| Licot Care Service Limited | Health & social care | 2022 |
| Life Line International CIC | Health & social care | 2025 |
| Lifecog Limited | Financial services | 2021 |
| Lift OUT Limited | Administrative & support | 1998 |
| Lift Surveys & Inspections Ltd | Professional & scientific | 2025 |
| Light of Mine Limited | Information & communication | 2018 |
| LIGHT2WORLD Ltd | Administrative & support | 2014 |
| Likaco Limited | Health & social care | 2018 |
| Lilalous Limited | Wholesale & retail | 2015 |
| Lilian's Apparel Ltd | Wholesale & retail | 2025 |
| Lilla Malva Ltd | Professional & scientific | 2022 |
| Lily & Rose Limited | Wholesale & retail | 2021 |
| Lily Care and Childminding Limited | Health & social care | 2019 |
| Limitless Healthcare Ltd | Wholesale & retail | 2019 |
| Linrobb Limited | Health & social care | 2015 |
| Lioness Hair Co Ltd | Other services | 2021 |
| LITE4LIFE Limited | Professional & scientific | 2012 |
| Little Achievers Ltd | Arts & recreation | 2021 |
| Little Einsteins Nursery Limited | Education | 2021 |
| Little Star Party Hire Ltd | Other services | 2026 |
| Livbiko Limited | Information & communication | 2023 |
| Lively Memorable Branding Ltd | Information & communication | 2021 |
| Livi Alecs Transport Company Ltd | Transport & logistics | 2025 |
| Livicode Tech Solutions Limited | Information & communication | 2016 |
| Living Spring Care Ltd | Health & social care | 2022 |
| Livingwell Services Ltd | Real estate | 2023 |
| Liya Technologies Ltd | Information & communication | 2020 |
| Liyns Osundpu Limited | Wholesale & retail | 2025 |
| Lizert D'S Limited | Health & social care | 2025 |
| Liznett Adult Care Limited | Health & social care | 2025 |
| Liznett Care Services Ltd | Health & social care | 2014 |
| Lizolu Ltd | Health & social care | 2013 |
| Lj's Sandwich Club Ltd | Hospitality | 2023 |
| LMH Services Ltd | Health & social care | 2015 |
| LMW Engineering Limited | Construction | 2014 |
| Loadrunner Group Ltd | Transport & logistics | 2019 |
| Locpharm Ltd | Wholesale & retail | 2025 |
| Loftgistic Designs Ltd | Construction | 2016 |
| LOH AB Limited | Health & social care | 2018 |
| Lola NAI Limited | Wholesale & retail | 2022 |
| Lola Ruth Associates Ltd | Professional & scientific | 2024 |