| Kalman Logistics Ltd | Extraterritorial | 2015 |
| Kamcordxr Ltd | Information & communication | 2025 |
| Kanurov & Co Ltd | Transport & logistics | 2017 |
| Kapsel Investments Limited | Financial services | 2025 |
| Karande Ltd | Information & communication | 2019 |
| Karina Enterprise Ltd | Wholesale & retail | 2011 |
| Karis Education Support Services Ltd | Education | 2022 |
| Karlgraysestates Ltd | Real estate | 2019 |
| Kartar Odonto Care Services Ltd | Health & social care | 2021 |
| KAS One Creative Ltd | Wholesale & retail | 2022 |
| Katoikia Investments Limited | Financial services | 2023 |
| Kattybeautylounge Ltd | Wholesale & retail | 2025 |
| Kaynow Ltd | Wholesale & retail | 2018 |
| KB Interiors and Events Ltd | Professional & scientific | 2020 |
| KBU Operations Ltd | Health & social care | 2021 |
| KC Home Improvements (Kent) Limited | Construction | 2018 |
| KC Rochester Limited | Hospitality | 2025 |
| KCL Medway Ltd | Arts & recreation | 1985 |
| Kcta - Services Ltd | Education | 2013 |
| KD Sales Group Ltd | Wholesale & retail | 2025 |
| KDC Body Repairs Limited | Wholesale & retail | 2012 |
| KDC Flooring Ltd | Wholesale & retail | 2019 |
| KDH Commercials Ltd | Real estate | 2021 |
| KDH Ltd | Wholesale & retail | 2017 |
| Kdhappliances Ltd | Wholesale & retail | 2022 |
| Kdrb Ltd | Construction | 2026 |
| Kebab Centre & Pizza Ltd | Hospitality | 2025 |
| Kedox UK Ltd | Construction | 2015 |
| Keen Tiling Services Ltd | Construction | 2026 |
| Keepshut London Limited | Construction | 2023 |
| Kel's Perspective Ltd | Arts & recreation | 2023 |
| Keldam Holdings Limited | Financial services | 2020 |
| Kelly Radio Services Ltd | Information & communication | 2021 |
| Kelly's Cavapoos & Cockapoos Ltd | Other services | 2018 |
| Kelutzu Ltd | Transport & logistics | 2022 |
| Kemp Accounts Limited | Professional & scientific | 2016 |
| Kemps Mobile Air-Con Ltd | Wholesale & retail | 2023 |
| Kemps Mobile Tyres Ltd | Wholesale & retail | 2016 |
| Kench Consultants Ltd | Professional & scientific | 2018 |
| Kensington Scaffolding Ltd | Construction | 2024 |
| Kenson Civils & Highways Limited | Construction | 2021 |
| Kenson Highways Limited | Construction | 1977 |
| Kenson Traffic Management (KTM) Limited | Construction | 2019 |
| Kent & Sussex Tanning Salons Ltd | Other services | 2024 |
| Kent Accommodation Ltd | Households | 2020 |
| Kent Accountants Ltd | Extraterritorial | 2007 |
| Kent ALL Trades Ltd | Construction | 2025 |
| Kent and Essex Garden Rooms Limited | Construction | 2025 |
| Kent Asbestos Solutions Limited | Professional & scientific | 2020 |
| Kent Assets Ltd | Administrative & support | 2023 |
| Kent Auto Mobile Services Ltd | Wholesale & retail | 2019 |
| Kent Automatic Doors Ltd | Construction | 2013 |
| Kent Bars Limited | Real estate | 2017 |
| Kent Bidets Ltd | Construction | 2024 |
| Kent Building Solutions Ltd | Construction | 2021 |
| Kent Buy to LET Properties Ltd | Real estate | 2025 |
| Kent Cabling Networks Ltd | Energy | 2009 |
| Kent Car Centre (Newington) Limited | Wholesale & retail | 2023 |
| Kent Car Wash Ltd | Administrative & support | 2026 |
| Kent Care & Health Services Ltd | Hospitality | 2023 |
| Kent Care Training Associates Limited | Education | 2003 |
| Kent Catering Limited | Hospitality | 2025 |
| Kent Cavapoo & Cavapoochon Limited | Other services | 2020 |
| Kent Cladding Ltd | Construction | 2020 |
| Kent Coffee Shack Ltd | Wholesale & retail | 2025 |
| Kent Contract Services Ltd | Agriculture & fishing | 2026 |
| Kent Crown Properties Ltd | Construction | 2023 |
| Kent Crystal Cabin Ltd | Wholesale & retail | 2025 |
| Kent Custom Projects Ltd | Construction | 2021 |
| Kent Disco Supplies Ltd | Wholesale & retail | 2018 |
| Kent Dog Sitter - Rochester Ltd | Agriculture & fishing | 2025 |
| Kent Electrical Solutions Ltd | Construction | 2007 |
| Kent Flat Roofs Ltd | Construction | 2021 |
| Kent Flooring Contractors Ltd | Construction | 2025 |
| Kent Flooring UK Limited | Construction | 2013 |
| Kent Floors Ltd | Construction | 2026 |
| Kent GAS Springs Limited | Wholesale & retail | 2023 |
| Kent Gateway Block Management Limited | Real estate | 2006 |
| Kent Gateway Lettings Limited | Real estate | 2006 |
| Kent Golf Simulator Ltd | Arts & recreation | 2022 |
| Kent Gynaecologist Limited | Health & social care | 2025 |
| Kent Heating Plumbing Ltd | Construction | 2021 |
| Kent Highways Limited | Construction | 2021 |
| Kent Hire Limited | Administrative & support | 2014 |
| Kent Homes (ME) Limited | Real estate | 2024 |
| Kent Loft Boarding & Conversions Ltd | Construction | 2019 |
| Kent Maintenance Ltd | Water & waste | 2016 |
| Kent Marine Bunkering Limited | Administrative & support | 2020 |
| Kent Newton Limited | Financial services | 2023 |
| Kent on Line Limited | Administrative & support | 2013 |
| Kent Orchard Pruning Limited | Administrative & support | 2008 |
| Kent Orchard Services Ltd | Agriculture & fishing | 2014 |
| Kent OT Consultancy Ltd | Health & social care | 2012 |
| Kent Place Ltd | Construction | 2022 |
| Kent Plan Properties Ltd | Construction | 2023 |
| Kent Plant Medway Ltd | Administrative & support | 2016 |
| Kent Pro Electrical Ltd | Construction | 2019 |
| Kent Quality Care Limited | Health & social care | 2026 |
| Kent Signature Property Management Ltd | Households | 2023 |
| Kent Small Business Services Ltd | Administrative & support | 2012 |