| KSK Development Limited | Transport & logistics | 2020 |
| KSL Utilities Limited | Professional & scientific | 2023 |
| KSP Capital Limited | Real estate | 2023 |
| KTA Research and Consulting LLP | | 2024 |
| KTV International Limited | Arts & recreation | 2007 |
| Kube Architecture LLP | | 2019 |
| Kubratbg Ltd | Transport & logistics | 2023 |
| Kudos Education Ltd | Administrative & support | 2023 |
| Kukki Canterbury Limited | Hospitality | 2017 |
| Kunal Digital Consulting Limited | Information & communication | 2017 |
| KV Decorators Ltd | Construction | 2025 |
| Kvmdr AI Limited | Information & communication | 2026 |
| KVN Capital Ltd | Financial services | 2022 |
| KVP18 Limited | Wholesale & retail | 2023 |
| KW Consulting LLP | | 2020 |
| KW Consulting Member Limited | Extraterritorial | 2020 |
| Kwerky Works Ltd | Wholesale & retail | 2015 |
| KZ Storage Ltd | Transport & logistics | 2024 |
| L & N Assets Ltd | Extraterritorial | 2019 |
| L Samuel Haulage Ltd | Transport & logistics | 2020 |
| L&R Recycling Limited | Water & waste | 2023 |
| L&R Trading Ltd | Wholesale & retail | 2022 |
| L.A. Plumbing Kent Ltd | Construction | 2019 |
| L.W Tree Care Limited | Administrative & support | 2017 |
| LA Fixe Limited | Wholesale & retail | 2021 |
| LA Source Experience Limited | Information & communication | 2014 |
| LAB RAT Records Limited | Manufacturing | 2013 |
| Labourtrades Ltd | Construction | 2015 |
| Ladydown Limited | Real estate | 2007 |
| Lafenisco Ltd | Wholesale & retail | 2026 |
| Lake Farm South Limited | Hospitality | 2023 |
| Lakesview a Management Company Limited | Administrative & support | 2007 |
| Lakesview Polishing Ltd | Construction | 2012 |
| Lakshmi Piercing Limited | Other services | 2026 |
| Lambda Security Limited | Extraterritorial | 2024 |
| Lambdasafe Ltd | Information & communication | 2020 |
| Lambscombe Farm Limited | Hospitality | 2021 |
| Lancefield Forestry Limited | Agriculture & fishing | 2001 |
| Land&Sky LLP | | 2009 |
| Landlord Legal Assist Limited | Administrative & support | 2020 |
| Langley Capital LLP | | 2012 |
| Langsam Run Club Ltd | Wholesale & retail | 2025 |
| Langshaw Place Management Company Limited | Households | 2022 |
| Lansbridge Management Limited | Real estate | 1988 |
| Lantana Care Solutions Ltd | Health & social care | 2026 |
| Larmil Ltd | Professional & scientific | 2024 |
| Laser Optics Ltd | Professional & scientific | 2026 |
| Last Will and Testament Limited | Professional & scientific | 2018 |
| Last Word Ltd | Arts & recreation | 2026 |
| Latesail Limited | Transport & logistics | 1999 |
| Latewood Limited | Information & communication | 2007 |
| Latham Group Management Limited | Other services | 1983 |
| Latham Property Company Limited | Hospitality | 1945 |
| Latham Trust Limited | Professional & scientific | 1969 |
| Launch Properties Ltd | Real estate | 2016 |
| Laura Bartlett Ltd | Professional & scientific | 2015 |
| Laurel Link Ltd | Professional & scientific | 2025 |
| Laurel the Label Ltd | Wholesale & retail | 2021 |
| Laurence Court (Canterbury) Management Company Limited | Households | 2018 |
| Lava Information Solutions Ltd | Information & communication | 2023 |
| Lawrence House Nominees Limited | Professional & scientific | 1994 |
| Lawson Services Ltd | Construction | 2025 |
| Lazy Days Holiday Parks Ltd. | Real estate | 1999 |
| LC Canterbury Property Ltd | Financial services | 2025 |
| LC Physio Services Ltd | Health & social care | 2024 |
| LC Property Development Ltd | Real estate | 2023 |
| Lcct Properties Limited | Real estate | 2023 |
| Lcmp Limited | Energy | 2024 |
| LDK Enterprises Limited | Professional & scientific | 2024 |
| LDP Logistics Ltd | Construction | 2025 |
| LE Canterbury T4 Ltd | Wholesale & retail | 2025 |
| Leadership Engineering Ltd | Professional & scientific | 2026 |
| Leadership Lens Studio Limited | Professional & scientific | 2026 |
| Leadingtype Limited | Other services | 2018 |
| Leafeh Ltd | Information & communication | 2025 |
| Leander Court (Whitstable) NO 3 Limited | Households | 2009 |
| LEARN2SAIL Limited | Arts & recreation | 2008 |
| LEARN2SAIL Syndicate One LLP | | 2015 |
| Leas Lift Cafe Ltd | Hospitality | 2024 |
| Leath Park Developments (Biddenden) Limited | Construction | 2017 |
| Leath Park Developments (Cornwallis) Limited | Construction | 2017 |
| Leath Park Developments (Headcorn) Limited | Real estate | 2017 |
| Leath Park Developments (Littlebourne) Limited | Construction | 2017 |
| Leath Park Developments Limited | Construction | 2015 |
| Leath Park Group Limited | Administrative & support | 2023 |
| Leath Park Holdings Limited | Administrative & support | 2018 |
| Leather Lane Two (Canterbury) Limited | Households | 2009 |
| Lech Alpine Limited | Hospitality | 2018 |
| LED Snaps Limited | Wholesale & retail | 2020 |
| Ledger Consulting Ltd | Financial services | 2021 |
| Ledgr AI Limited | Information & communication | 2025 |
| LEE & LEA Ltd | Health & social care | 2014 |
| LEE & Sham Ltd | Wholesale & retail | 2021 |
| Leeds Auto Centre-Maidstone Ltd | Wholesale & retail | 2015 |
| Left Group of Companies Ltd | Real estate | 2026 |
| Legal Humanities Association Ltd | Professional & scientific | 2024 |
| Legal Negotiations Limited | Administrative & support | 2022 |
| Legalities Limited | Professional & scientific | 2018 |
| Legalrisks Professional Indemnity Limited | Financial services | 2006 |
| Lehane Travel Limited | Transport & logistics | 1974 |