| Leisure Centre Creative Ltd | Information & communication | 2024 |
| Leisure Park Internet Solutions Ltd | Information & communication | 2013 |
| Leisure Repair Limited | Other services | 2011 |
| Lemon Creative Limited | Professional & scientific | 2006 |
| LEN House (Maidstone) Limited | Construction | 2019 |
| Leo's Barbers 81 Ltd | Other services | 2025 |
| Leo's Cafe 20 Ltd | Hospitality | 2025 |
| Leo's Hair & Beauty Ltd | Other services | 2021 |
| Leo's Sandwich & Cafe Ltd | Hospitality | 2022 |
| Level Ball Events Ltd | Arts & recreation | 2025 |
| Level Construction Kent Ltd | Construction | 2025 |
| Level Developments Kent Ltd | Real estate | 2026 |
| Level UP Games Canterbury Ltd | Wholesale & retail | 2014 |
| Levi for Compassion | Health & social care | 2015 |
| Leydon Lettings Ltd | Real estate | 2022 |
| LGO Media Ltd | Information & communication | 2026 |
| Lgower&Sons Ltd | Construction | 2026 |
| LGT Fisheries Limited | Wholesale & retail | 2026 |
| LIA Denis Ltd | Transport & logistics | 2024 |
| Liam Smyth Limited | Financial services | 2015 |
| Libertas Thanet Limited | Real estate | 2020 |
| Librea Ltd | Real estate | 2019 |
| Lica Wimbledon Ltd. | Real estate | 2013 |
| Lica Wimbledon Properties Ltd | Real estate | 2024 |
| Lido Views Limited | Real estate | 2011 |
| Lieg Construction Ltd | Construction | 2025 |
| Lieu-Tenant Ltd | Health & social care | 2019 |
| Lifestyle Homes Limited | Real estate | 1983 |
| Light 79 LLP | | 2018 |
| Light Paws Ltd | Information & communication | 2019 |
| Light Tone Studios Ltd | Professional & scientific | 2026 |
| Lightqube Ltd | Professional & scientific | 2010 |
| Lilyjk Ltd | Education | 2006 |
| Lima Canterbury Ltd | Wholesale & retail | 2026 |
| Lime Court Property Management Limited | Real estate | 2005 |
| Lime Logistics Limited | Transport & logistics | 1999 |
| Limelite Security Limited | Administrative & support | 2024 |
| Limexburg Logistics Ltd | Transport & logistics | 2025 |
| Liminal Systems Ltd | Professional & scientific | 2026 |
| Limitless Building Ltd | Construction | 2026 |
| Limitless Building Services Ltd | Construction | 2020 |
| Linc Industrial Limited | Transport & logistics | 2017 |
| Lindenstone Property Group Ltd | Real estate | 2026 |
| Lindsay GS Digital Ltd | Information & communication | 2022 |
| Linecasting Machinery Limited | Manufacturing | 1962 |
| Ling Demolition Services Limited | Construction | 2003 |
| Ling Employment Services Limited | Extraterritorial | 1994 |
| Ling Industrial Services Limited | Wholesale & retail | 2003 |
| Ling Metals Limited | Water & waste | 1988 |
| Ling UK Holdings Limited | Professional & scientific | 2003 |
| Ling Waste Recycling Limited | Water & waste | 2014 |
| Lingden Transport Ltd | Transport & logistics | 2021 |
| Lion Global Supply Ltd | Wholesale & retail | 2026 |
| Lioness Beauty Ltd | Wholesale & retail | 2025 |
| Lioness Writing Limited | Information & communication | 2010 |
| Little Brick Shed Ltd | Construction | 2017 |
| Little Granary Limited | Wholesale & retail | 2024 |
| Little Hookstead Farm Ltd. | Construction | 2018 |
| Little INK Ltd | Other services | 2021 |
| Little Meadow Residents Association Limited | Professional & scientific | 1981 |
| Little Odium Developments Limited | Construction | 2018 |
| Little OWL Consulting Ltd | Professional & scientific | 2018 |
| Little Pink Dog Ltd | Manufacturing | 2024 |
| Little Rhoden Farm Limited | Agriculture & fishing | 1979 |
| Little Sprouts Canterbury Limited | Arts & recreation | 2025 |
| Littlebourne House Limited | Administrative & support | 2004 |
| Littlewood Architecture Limited | Professional & scientific | 2018 |
| Live Life With Purpose Ltd | Extraterritorial | 2017 |
| Livetec Digital Limited | Information & communication | 2023 |
| Livetec Services Limited | Agriculture & fishing | 2024 |
| Livetec Systems International Holdings Limited | Financial services | 2023 |
| Livetec Systems Limited | Agriculture & fishing | 2010 |
| Living Planet Homes Ltd | Other services | 2022 |
| Living Planet Homes Management Limited | Real estate | 2025 |
| Living Planet Homes WHS Ltd | Construction | 2023 |
| LIZ Jewell Consultancy Limited | Professional & scientific | 2019 |
| LJ Heat Pumps Ltd | Construction | 2024 |
| LJ Positive Holdings Ltd | Arts & recreation | 2023 |
| LJ Positive Productions LLP | | 2023 |
| LJD Roofing & Building Ltd | Construction | 2025 |
| LJW Food Limited | Hospitality | 2024 |
| Lloyd Bore Holdings Limited | Professional & scientific | 2023 |
| Lloyd Roberts Financial Services Ltd | Financial services | 2018 |
| Lloydbore Ltd | Administrative & support | 2005 |
| LMD International Financial Services Limited | Professional & scientific | 1989 |
| LMN Private Ltd | Health & social care | 2022 |
| LMR Estates (Kent) Ltd | Real estate | 2026 |
| LMV Carpentry Ltd | Construction | 2022 |
| Lock Horns Wrestling Alliance Ltd | Arts & recreation | 2022 |
| Locksmiths Express Ltd | Manufacturing | 2020 |
| Lockwell Security Ltd | Wholesale & retail | 2012 |
| Locum General Practitioner Services Ltd | Health & social care | 2018 |
| Loftbar CT1 Limited | Hospitality | 2020 |
| Logan House (Canterbury) Limited | Administrative & support | 2005 |
| Logic Sales & Lettings Ltd | Real estate | 2023 |
| Lojo Music Limited | Information & communication | 2019 |
| Lokarr Limited | Wholesale & retail | 2023 |
| Loki Productions Limited | Information & communication | 2001 |
| London Independent Rail Services Ltd | Construction | 2013 |
| London Labs Nominees Ltd | Extraterritorial | 2025 |