| LF People and Culture Ltd | Administrative & support | 2021 |
| LFD Properties Limited | Real estate | 2012 |
| LHB Consulting Ltd | Professional & scientific | 2022 |
| Li&Co Ltd | Information & communication | 2025 |
| Liam Porritt Ltd | Information & communication | 2023 |
| Libby Bennett Limited | Arts & recreation | 2025 |
| Libetek Limited | Information & communication | 2021 |
| Licensed Tyres Recycling Ltd | Extraterritorial | 2014 |
| Life and Soul Youth Work | Education | 2013 |
| Life Together Counselling Ltd | Health & social care | 2023 |
| Life With Dignity Ltd | Wholesale & retail | 2021 |
| Lifefix Ltd | Real estate | 2021 |
| Lifelong Education Ltd | Other services | 2024 |
| Lightning Electrical South Ltd | Construction | 2020 |
| Lightstone Prime High Street Fund LP | | 2009 |
| Lignis Carbon Ltd | Professional & scientific | 2025 |
| Likely Unicorn Ventures Ltd | Information & communication | 2023 |
| Likelyhood Ltd | Professional & scientific | 2026 |
| Lilly Commerce Limited | Wholesale & retail | 2025 |
| Lily Hawkins Interiors Ltd | Professional & scientific | 2024 |
| Lime Court Residents Company (Tunbridge Wells) Limited | Households | 2007 |
| Lime Hill Capital Ltd | Professional & scientific | 2021 |
| Lime Mount Limited | Households | 1995 |
| Lime Tree Interiors - London Ltd | Wholesale & retail | 2012 |
| Limelite Lighting Holdings Limited | Financial services | 2021 |
| Limelite Lighting Limited | Administrative & support | 2007 |
| Limes Consultants Limited | Financial services | 2025 |
| Liminal Activities Ltd | Information & communication | 2023 |
| Lincs Housing and Development Limited | Real estate | 2024 |
| Linden Fields RMC Limited | Households | 2005 |
| Linden Gardens Flat Management(Tunbridge Wells)Limited | Households | 1975 |
| Linden Park Residents Association Limited | Households | 1982 |
| Lindley Mortimer LLP | | 2006 |
| Lindsay Property Solutions Ltd | Real estate | 2025 |
| Lindsey Shaw Orthodontics Limited | Health & social care | 2015 |
| Lingfield Road Maisonettes Association Limited(The) | Households | 1985 |
| Links CRM Ltd | Professional & scientific | 2012 |
| Lint Accountants Ltd | Professional & scientific | 2010 |
| Lion Properties (Westfield) Limited | Administrative & support | 2008 |
| Lioness Consultants (UK) Limited | Professional & scientific | 2008 |
| Lioness Consulting Ltd | Professional & scientific | 2023 |
| Lions and Tigers Ltd | Administrative & support | 2025 |
| LIP Liner ME Ltd | Wholesale & retail | 2025 |
| Liptraps (Tunbridge) Management Company Limited | Administrative & support | 1983 |
| Liquid Applied Membranes Limited | Construction | 2016 |
| Liquid Sky Ltd | Professional & scientific | 2024 |
| Liriks Limited | Financial services | 2023 |
| Liscombe Business Park Limited | Real estate | 2002 |
| Lishco Ltd | Information & communication | 2024 |
| Lisi Patisserie Ltd. | Hospitality | 2026 |
| Lissi Webber Limited | Professional & scientific | 2016 |
| Listed Building Creations Ltd | Construction | 2007 |
| Little & Georgiou (IFA) Limited | Professional & scientific | 2017 |
| Little Cottage Nursery School Limited | Education | 2016 |
| Little Creatures Limited | Administrative & support | 2007 |
| Little Finland Limited | Construction | 2007 |
| Little Foresters Apparel Limited | Wholesale & retail | 2022 |
| Little Foxes Forest Adventures Ltd | Education | 2020 |
| Little Happy Learners Ltd | Health & social care | 2021 |
| Little Home Montessori Childminders Ltd | Health & social care | 2022 |
| Little Legend Marketing Ltd | Professional & scientific | 2023 |
| Little Miss Sunshine LLP | | 2013 |
| Little Treasure Outlet Limited | Wholesale & retail | 2026 |
| Little Website Company Limited | Information & communication | 2026 |
| Littledene Construction Limited | Construction | 1991 |
| LIV Thurlwell Jewellery Ltd | Manufacturing | 2024 |
| LIV3 Ltd | Administrative & support | 2022 |
| Live Digimart Ltd | Professional & scientific | 2025 |
| Living Safely Ltd | Information & communication | 2016 |
| Livnproperty Ltd | Real estate | 2025 |
| Lizanne Court Freehold Company Limited | Administrative & support | 2017 |
| Lizanne Services RTM Company Limited | Households | 2007 |
| Lizzies Helping Hearts CIC | Hospitality | 2023 |
| LJ Acupuncture and Herb Clinic Ltd | Health & social care | 2020 |
| LJE Building Solutions Ltd | Construction | 2017 |
| Ljhmotors Limited | Wholesale & retail | 2025 |
| LJP Communications Limited | Wholesale & retail | 2017 |
| LJT Cable Ltd | Construction | 2025 |
| LKS Management Co Limited | Administrative & support | 2007 |
| LL Brickwork Ltd | Construction | 2024 |
| LL Developments Ltd | Construction | 2019 |
| Llandeilomedia Ltd | Information & communication | 2016 |
| Llecs Limited | Professional & scientific | 2026 |
| Lltech Ltd | Information & communication | 2012 |
| LMC Projects Ltd | Professional & scientific | 2017 |
| Lmdn Design Ltd | Information & communication | 2023 |
| LMS Property Holdings Limited | Real estate | 2017 |
| Lmtw Limited | Health & social care | 2023 |
| Lnfr Limited | Real estate | 2000 |
| LNW Consulting Ltd | Professional & scientific | 2023 |
| Lo-Tek Audio Ltd | Information & communication | 2020 |
| Lo-Tek Publishing Ltd | Information & communication | 2020 |
| Location Partnership Limited | Information & communication | 2006 |
| Loch Advisory Ltd | Administrative & support | 2025 |
| Loch Associates Group Limited | Financial services | 2009 |
| Loch Associates LLP | | 2011 |
| Loch Business Solutions Limited | Professional & scientific | 2021 |
| Loch Dispute Resolution Limited | Professional & scientific | 2021 |
| Loch Employment Law Limited | Extraterritorial | 2016 |
| Loch Health Limited | Professional & scientific | 2016 |