| Kentish Medical Limited | Real estate | 2007 |
| Kentish Property Solutions Ltd | Real estate | 2019 |
| Kentish Specialist Group (KSG) Limited | Administrative & support | 2022 |
| Kentish Stay Ltd | Real estate | 2025 |
| Kentish Warm Roof Ltd | Construction | 2020 |
| Kentish Yeoman Ltd | Hospitality | 2019 |
| Kentklean Limited | Administrative & support | 1997 |
| Kentrheumatologist Ltd | Health & social care | 2021 |
| Kentstone Estates Limited | Financial services | 2014 |
| Kenward Enterprises Limited | Wholesale & retail | 2016 |
| Ker-Pow Tech(Nology) Limited | Information & communication | 2018 |
| Kerbey Motors Ltd. | Wholesale & retail | 2011 |
| Kernahans Aggregates Limited | Wholesale & retail | 2024 |
| Kernahans Commercials Ltd | Manufacturing | 2025 |
| Kernahans Contractors Ltd | Construction | 2020 |
| Kernel Hosting Ltd | Information & communication | 2019 |
| Kerry Hill Property Developments Ltd | Real estate | 2017 |
| Kesi Comms Limited | Information & communication | 2015 |
| Kestrel Supercar Limited | Wholesale & retail | 2022 |
| Keswick a Limited | Professional & scientific | 2022 |
| Kevin Andrei Ltd | Construction | 2019 |
| Key Installations Limited | Construction | 2017 |
| Key Pointing Ltd | Construction | 2006 |
| Key West Trucking Ltd | Transport & logistics | 2025 |
| Keyed UP Limited | Administrative & support | 2025 |
| Keyspan Construction Ltd | Construction | 2026 |
| Keyspan Ltd | Construction | 2016 |
| Keystone Construction Kent Limited | Construction | 2025 |
| Keystone Constructions (Yorkshire) Limited | Construction | 2016 |
| Keystone Cura Ltd | Professional & scientific | 2024 |
| Keystone Plant and Design Limited | Manufacturing | 2025 |
| Keystone Site Solutions Limited | Construction | 2020 |
| KFK (Canterbury) Ltd | Hospitality | 2023 |
| KFS Holdings Limited | Financial services | 2023 |
| KG DEL Ltd | Transport & logistics | 2025 |
| KGG Group Limited | Real estate | 2015 |
| KGS Commercial Repairs Centre Ltd | Wholesale & retail | 2024 |
| KH Recruitment Limited | Administrative & support | 2004 |
| KH21TAT Ltd | Arts & recreation | 2025 |
| Kharece Jamin Limited | Information & communication | 2018 |
| Khpc Sales Ltd | Wholesale & retail | 2018 |
| Khpc Workshop Ltd | Wholesale & retail | 2018 |
| Khph 2018 Limited | Hospitality | 2018 |
| Kiah Worldwide Ltd | Information & communication | 2010 |
| Kibela Ltd | Real estate | 2022 |
| Kick Pick Ltd | Wholesale & retail | 2026 |
| KID Apollo Ltd | Information & communication | 2026 |
| KIE Investments Limited | Real estate | 2016 |
| Kiladay Limited | Hospitality | 2025 |
| Killer Results Marketing Ltd | Professional & scientific | 2023 |
| Kiln Cottage Management Company Limited | Households | 2006 |
| Kima Real Estate Ltd | Real estate | 2020 |
| Kims Hospital Limited | Health & social care | 2011 |
| Kims Kent Holdings Limited | Health & social care | 2015 |
| Kims Kent Property Holding Limited | Financial services | 2017 |
| Kims Property Company Limited | Construction | 2011 |
| Kimwis Limited | Construction | 2015 |
| Kind FOX Limited | Extraterritorial | 2023 |
| Kind Print Limited | Manufacturing | 2006 |
| Kindbridge Care Ltd | Health & social care | 2025 |
| Kinder Cove Day Nursery Group Limited | Health & social care | 2024 |
| Kinetic Nomad Limited | Information & communication | 2026 |
| Kinetic Youth Ltd | Administrative & support | 2008 |
| King Banana TV Ltd | Information & communication | 2018 |
| King of Lions Garage Ltd | Wholesale & retail | 2025 |
| Kingdom Adventures Ltd | Administrative & support | 2014 |
| Kingdom Business Investments Limited | Real estate | 2002 |
| Kingdom of KAI Ltd | Wholesale & retail | 2025 |
| Kingdom Woodland Kitchen Limited | Hospitality | 2018 |
| Kingfisher Plumbing and Heating Ltd | Construction | 2022 |
| Kingly Court Limited | Information & communication | 2005 |
| Kings Hill (D1) Management Limited | Households | 2001 |
| Kings Hill Marketing Consultancy Limited | Administrative & support | 2015 |
| Kings Reach Support Ltd | Education | 2020 |
| Kings ROW Properties Limited | Real estate | 2015 |
| Kingsdown Compressed Air Systems (Holdings) Limited | Administrative & support | 2013 |
| Kingsdown Compressed Air Systems Limited | Manufacturing | 2006 |
| Kingsford Design & Build Limited | Professional & scientific | 2008 |
| Kingsmere Land Limited | Information & communication | 2018 |
| Kingsshield Enterprises Ltd | Wholesale & retail | 2024 |
| Kingswood GAS Services Limited | Construction | 2022 |
| Kingswood Hoarding and Timber Ltd | Construction | 2013 |
| Kingswood Kebab and Pizza Ltd | Hospitality | 2021 |
| Kingswood Residential Limited | Real estate | 2015 |
| Kintity Ltd | Wholesale & retail | 2018 |
| Kinwood Construction Limited | Wholesale & retail | 1989 |
| Kiraly Store Ltd | Wholesale & retail | 2024 |
| Kiran Consultancy Ltd | Health & social care | 2015 |
| KIRILVTS93 Limited | Transport & logistics | 2019 |
| Kirk-Brown Limited | Professional & scientific | 2010 |
| Kisiwa | Education | 2016 |
| KIT Apartments Ltd | Households | 2024 |
| Kitchen Respray Kent Ltd | Construction | 2024 |
| Kite Glass Ltd | Manufacturing | 2012 |
| Kites Events Limited | Other services | 2026 |
| Kiwi Pools UK Ltd | Other services | 2022 |
| Kiwi Ventures Ltd | Real estate | 2023 |
| KIX Trading Limited | Real estate | 2001 |
| Kizan Limited | Information & communication | 2025 |
| KJ Harrison Ltd | Other services | 2026 |