| Kobra Property Ltd | Real estate | 2024 |
| Kontrax Management Limited | Construction | 1995 |
| Kosi GAS Limited | Construction | 2008 |
| KPJ Construction (Kent) Ltd | Construction | 2024 |
| Krystlegate Limited | Health & social care | 1984 |
| Ksnl UK Ltd | Professional & scientific | 2025 |
| Kugona Laboratory Limited | Health & social care | 2026 |
| KV Global Limited | Wholesale & retail | 2015 |
| Kyber Clinical Ltd | Professional & scientific | 2026 |
| L & M Retreats Ltd | Hospitality | 2021 |
| L Sunley Plumbing & Heating Ltd | Construction | 2013 |
| L.R.G. Investments (Margate) Limited | Real estate | 1963 |
| L.W.Socialcareconsultancy Ltd | Professional & scientific | 2024 |
| LA Petite Mort Holdings Limited | Manufacturing | 2026 |
| LAA Property Limited | Real estate | 2020 |
| Laminated Glass Systems Ltd | Construction | 2006 |
| Landy & Sons Ltd | Manufacturing | 2019 |
| Larkscliff Court Management Company Limited | Households | 1987 |
| Lauren Patricia Dorey Ltd | Extraterritorial | 2021 |
| Laurian Investments Ltd | Real estate | 2025 |
| Lawrence Campbell Limited | Information & communication | 2008 |
| Lawrence Campbell Services Limited | Information & communication | 2013 |
| Layered Lives Ltd | Education | 2026 |
| LCR Properties Limited | Real estate | 2013 |
| LD Software Innovations Ltd | Information & communication | 2023 |
| Lead and Learn Dog Walking Ltd | Other services | 2025 |
| Lefa Hillborough Ltd | Real estate | 2020 |
| Left Handed Productions Ltd | Arts & recreation | 2026 |
| Legality Ltd | Information & communication | 2013 |
| Leighdom House RTM Company Ltd | Households | 2026 |
| LEO Rogers Solutions Limited | Construction | 2016 |
| Leonard Penny Ltd | Professional & scientific | 2015 |
| Lesh Rail Limited | Professional & scientific | 2012 |
| Let’S Talk IT Over Clinical Services Ltd | Education | 2025 |
| Level UP Building Ltd | Construction | 2024 |
| Lifestyle Choices (Kent) Ltd | Financial services | 2022 |
| Lifestyle Choices Planning Ltd | Financial services | 2025 |
| Lifestyle Investments Group Limited | Real estate | 2005 |
| Lifestyle Lawford Ltd | Construction | 2020 |
| Lights Supply Ltd | Manufacturing | 2026 |
| Lilley Tile and Stone (Kent) Limited | Wholesale & retail | 2017 |
| Lilley Tile and Stone LLP | | 2009 |
| Lilywhite & Co. Limited | Hospitality | 2025 |
| Limitlss Physiques Ltd | Arts & recreation | 2022 |
| Linen Court Management Company Limited | Households | 2001 |
| Lingam Construction Ltd | Construction | 2021 |
| Lingua Learn Franchise Services Ltd | Education | 2025 |
| Lingua Learn Virtual Training Centers Ltd | Education | 2025 |
| Link&Share Limited | Professional & scientific | 2012 |
| Linton Homes Ltd | Real estate | 2021 |
| Little Charles Ltd | Real estate | 2023 |
| Little Darling Delights Limited | Extraterritorial | 2025 |
| Little Eaton Farm Chickens Ltd | Agriculture & fishing | 2025 |
| Little Explorers Day Care Kent (HB) Limited | Health & social care | 2021 |
| Little Fingers Studio Limited | Education | 2023 |
| Little Pickles Play Cafe Limited | Arts & recreation | 2026 |
| Livestock Logistics Trading AS Shepfair Ltd | Wholesale & retail | 2024 |
| Llangeview Ltd | Hospitality | 2015 |
| LM Enhancements Limited | Wholesale & retail | 2016 |
| LNR Roofing Ltd | Construction | 2026 |
| Location Moves Ltd | Real estate | 2017 |
| London Creches Ltd | Health & social care | 2017 |
| London Kayak Company Ltd | Administrative & support | 2015 |
| London Property Maintenance Group Limited | Construction | 2016 |
| Lordave (Fencing) Limited | | 1986 |
| Lost Cargo Ltd | Wholesale & retail | 2026 |
| Louder Location Limited | Education | 2023 |
| Louis Baker Construct Ltd | Construction | 2003 |
| Louis Brett Holdings Ltd | Financial services | 2021 |
| LS Commerce Ltd | Wholesale & retail | 2024 |
| LT Drawing Services Limited | Professional & scientific | 2014 |
| Ltsp Ltd | Hospitality | 2020 |
| Luke PW Needham Ltd | Administrative & support | 2026 |
| Lume Rise Ltd | Professional & scientific | 2026 |
| Luna Customer Experience Consultants Ltd | Professional & scientific | 2021 |
| Luxmend Ltd | Wholesale & retail | 2024 |
| M & H Interiors Limited | Construction | 2019 |
| M & Z Delights Ltd | Wholesale & retail | 2024 |
| M M Project Management Ltd | Professional & scientific | 2026 |
| M P Foad Limited | Professional & scientific | 2010 |
| M R D F S Ltd | Construction | 2002 |
| M.C.Henry Engineering Ltd | Professional & scientific | 2023 |
| M.Skinner Brokers Ltd | Financial services | 2024 |
| M3 Infrastructure Limited | Professional & scientific | 2026 |
| Macleod & SON Transport Limited | Transport & logistics | 2022 |
| Macleod Consultancy (Kent) Limited | Professional & scientific | 2021 |
| Madden &Dancer Developments Limited | Construction | 2025 |
| Magpie Mortgages Ltd | Financial services | 2019 |
| Maintenance Kent Limited | Construction | 2014 |
| Maka Properties Limited | Real estate | 2011 |
| Make a Dollar Make a Difference Enterprises (Madmade) Ltd | Administrative & support | 2021 |
| Malkin Lloyd Glass Limited | Manufacturing | 2013 |
| Mamie's Crepes Limited | Hospitality | 2021 |
| Mamma's Ltd | Hospitality | 2021 |
| Mandolorian Health Limited | Health & social care | 2014 |
| Mandrew Medical Limited | Professional & scientific | 2023 |
| Mangat Care Homes Ltd | Health & social care | 2019 |
| Manhattan Nails 69 Ltd | Other services | 2024 |
| Manibus Ltd | Information & communication | 2023 |
| Manic Minis Limited | Wholesale & retail | 2018 |