| Kaan Nesim Logistics Ltd | Transport & logistics | 2026 |
| Kaba Real Estate Holdings Ltd | Real estate | 2020 |
| Kadampa Meditation Centre Kent | Other services | 1998 |
| Kadina Charlton Cosmetics Ltd | Manufacturing | 2026 |
| Kairos Accountancy Services Ltd | Professional & scientific | 2024 |
| Kakiru Limited | Real estate | 2024 |
| Kalan Limited | Transport & logistics | 2016 |
| Kalex Electrical Services Ltd | Construction | 2024 |
| Kaloyan Ltd | Wholesale & retail | 2011 |
| Kamboaj Ltd | Wholesale & retail | 2026 |
| Kamni Chain Ltd | Professional & scientific | 2020 |
| KAN Realty Limited | Real estate | 2020 |
| Kanagasooriam Medical Limited | Health & social care | 2003 |
| Kancura Fashion Limited | Manufacturing | 2018 |
| Kandhu Recruitment Ltd | Administrative & support | 2018 |
| Kane Silks Design Limited | Professional & scientific | 2018 |
| Kannark Consultants Limited | Financial services | 1998 |
| Kapisha Healthcare Ltd | Administrative & support | 2022 |
| Kapital Finance Limited | Financial services | 2019 |
| Kapital PAY Limited | Financial services | 2024 |
| Karen Hazel Limited | Wholesale & retail | 2014 |
| Karllee Construction (UK) Ltd | Construction | 2012 |
| Karllee Development Limited | Construction | 2016 |
| Karllee Plant Hire Ltd | Administrative & support | 2013 |
| Karolina Hayes Ltd | Administrative & support | 2021 |
| Kasthuri’S Kitchen Ltd | Hospitality | 2025 |
| Kathar Property Investment Ltd | Real estate | 2024 |
| Kathton House Restaurant Limited | Hospitality | 2018 |
| Kaysaxmusic Global Ltd | Arts & recreation | 2025 |
| Kazin Ltd | Construction | 2023 |
| KB & JB Services Ltd | Construction | 2014 |
| KB Professional Support Ltd | Other services | 2024 |
| KCA Towbars Limited | Wholesale & retail | 2009 |
| KD Realty Ltd | Real estate | 2024 |
| KE DR Properties Limited | Real estate | 2017 |
| Keelingproperties Ltd | Real estate | 2024 |
| Keilhill Holdings Limited | Professional & scientific | 2009 |
| Keilhill Specialist Homes Limited | Health & social care | 2019 |
| Kellerwinebars Ltd | Hospitality | 2026 |
| Kelp Technologies Limited | Information & communication | 2020 |
| Kelsey Farms Limited | Agriculture & fishing | 2003 |
| Kelsey IP Limited | Administrative & support | 2021 |
| Kelx Solutions Ltd | Administrative & support | 2026 |
| KEM Radiography Ltd | Health & social care | 2025 |
| Kemington's Lodge Ltd | Hospitality | 2022 |
| Kendrick Properties Limited | Real estate | 2023 |
| Kenilworth Film Productions Limited | Extraterritorial | 1946 |
| Kennedy Inc Limited | Information & communication | 2011 |
| Kenny and Co Holdings Ltd | Financial services | 2024 |
| Kenold (Canterbury) | Extraterritorial | 1964 |
| Kent & Canterbury Black Women Forward CIC | Administrative & support | 2026 |
| Kent & Medway Cyber Cluster | Information & communication | 2023 |
| Kent Airport Taxis Ltd | Transport & logistics | 2024 |
| Kent Archaeological Society | Other services | 2015 |
| Kent Autism Education Service Limited | Education | 2022 |
| Kent Auto Tech Limited | Wholesale & retail | 2018 |
| Kent Barbers 1 Limited | Other services | 2016 |
| Kent Based Utilities Ltd | Construction | 2021 |
| Kent Body Shop Ltd | Manufacturing | 2014 |
| Kent Body Shop Supplies Ltd | Wholesale & retail | 2015 |
| Kent Borough Holdings Ltd | Financial services | 2025 |
| Kent Broadband Limited | Information & communication | 2014 |
| Kent Building and Refurb Limited | Construction | 2024 |
| Kent Business Investors Limited | Financial services | 2018 |
| Kent Citizens Limited | Information & communication | 2019 |
| Kent Cleaning Ltd | Administrative & support | 2025 |
| Kent Cleans South East Ltd | Administrative & support | 2026 |
| Kent Coffee Festival Ltd | Hospitality | 2022 |
| Kent College (Canterbury) Enterprises Limited | Education | 1992 |
| Kent Commercial Body Works Limited | Manufacturing | 2014 |
| Kent Connect Ltd | Manufacturing | 2020 |
| Kent Construction Services Limited | Construction | 2015 |
| Kent County Counselling Limited | Health & social care | 2015 |
| Kent County Homes Limited | Construction | 2006 |
| Kent Crockery Ltd | Administrative & support | 2021 |
| Kent Document Management Ltd | Manufacturing | 2013 |
| Kent Dog Sports Ltd | Arts & recreation | 2025 |
| Kent Electrical & Security Solutions Ltd | Administrative & support | 2024 |
| Kent Engineering Components Limited | Professional & scientific | 1992 |
| Kent Estate Agencies Limited | Real estate | 1999 |
| Kent Farm Gate Foods Limited | Wholesale & retail | 2007 |
| Kent Food Hubs CIC | Wholesale & retail | 2019 |
| Kent Garden Clearance Ltd | Administrative & support | 2024 |
| Kent Hand Surgeons LLP | | 2022 |
| Kent Home Care Limited | Health & social care | 2014 |
| Kent Hospitality Group Limited | Professional & scientific | 2020 |
| Kent Jiu-Jitsu Limited | Arts & recreation | 2024 |
| Kent Junior School of Fashion and Arts CIC | Arts & recreation | 2024 |
| Kent Kids Dietitian Ltd | Health & social care | 2024 |
| Kent Management Accountancy Limited | Professional & scientific | 2013 |
| Kent Neuro Therapy Centre Limited | Health & social care | 1989 |
| Kent New Homes Limited | Professional & scientific | 1979 |
| Kent Occasion's Limited | Arts & recreation | 2023 |
| Kent Orthocare Limited | Professional & scientific | 2021 |
| Kent Orthodox Monastery | Other services | 2022 |
| Kent Philharmonic Orchestra Ltd | Arts & recreation | 2017 |
| Kent Pool Services Ltd | Other services | 2017 |
| Kent Prestige Homes Limited | Administrative & support | 1987 |
| Kent Properties Limited | Construction | 1998 |
| Kent Property (Block and Estate) Management Ltd | Households | 2018 |