| Kent Imports Ltd | Other services | 2014 |
| Kent Labour Ltd | Administrative & support | 2026 |
| Kent Limousines Ltd | Transport & logistics | 2025 |
| Kent Mechanical Services Limited | Construction | 2018 |
| Kent Micro Pubs Ltd | Hospitality | 2018 |
| Kent Modesty Boutique Ltd | Wholesale & retail | 2025 |
| Kent Pallets Ltd | Transport & logistics | 2015 |
| Kent Personal Training Academy Ltd | Education | 2025 |
| Kent Plants Limited | Other services | 2017 |
| Kent Quality Butcher Ltd | Wholesale & retail | 2018 |
| Kent Re-Pointing & Restoration Ltd | Construction | 2013 |
| Kent Recovery Services Ltd | Transport & logistics | 2019 |
| Kent Region Limited | Administrative & support | 2023 |
| Kent Render and Building Supplies Ltd | Wholesale & retail | 2025 |
| Kent Residential Homes Limited | Real estate | 2018 |
| Kent Roofing Supplies Limited | Construction | 2018 |
| Kent Smart Repairs Ltd | Wholesale & retail | 2017 |
| Kent Snagging Ltd | Construction | 2025 |
| Kent Structural Services Ltd | Construction | 2008 |
| Kent Vape Shop Ltd | Wholesale & retail | 2022 |
| Kent Waste Haulage Ltd | Transport & logistics | 2024 |
| Kentech Electrical Services Ltd | Professional & scientific | 2016 |
| Kentech Phones Ltd | Wholesale & retail | 2025 |
| Kentline Limited | Real estate | 2018 |
| Kentsalesselect Ltd | Wholesale & retail | 2025 |
| Kenwin Garden Rooms Ltd | Manufacturing | 2021 |
| Kerett Electronic Services Limited | Other services | 1998 |
| KES Lawson & Lawson Ltd | Administrative & support | 2008 |
| Kestrel Care Solutions Ltd | Information & communication | 2026 |
| Kestrel Consultancy Ltd | Professional & scientific | 2024 |
| Kevin RAY Health & Safety Limited | Professional & scientific | 2018 |
| Key Appraisal Limited | Administrative & support | 2008 |
| Keyclick Homes Ltd | Real estate | 2025 |
| Keycorp Holdings Limited | Construction | 2022 |
| Keys 4 Cars Ltd | Wholesale & retail | 2018 |
| Keystone People Europe Ltd | Administrative & support | 2024 |
| Keystone People Limited | Administrative & support | 2019 |
| Kezbiz Limited | Wholesale & retail | 2017 |
| Kgevents Limited | Hospitality | 2023 |
| Khabra Tech Ltd | Information & communication | 2025 |
| Khalsa.Uk Property Limited | Real estate | 2019 |
| Khan Halal Meat & Vegetable Limited | Wholesale & retail | 2024 |
| Khan' S Indian Dinning Limited | Hospitality | 2023 |
| Khanpullen Consulting Ltd | Information & communication | 2023 |
| Khares Analytics Limited | Information & communication | 2024 |
| Khela Construction Services Ltd | Construction | 2022 |
| Khrab Ltd | Administrative & support | 2025 |
| Khroud Investments Ltd | Real estate | 2025 |
| Kian Auto Body Ltd | Wholesale & retail | 2025 |
| Kickchord Ltd | Information & communication | 2025 |
| Kiddz Haven Ltd | Health & social care | 2014 |
| Kielbus Limited | Construction | 2026 |
| Kikjummay Ltd | Wholesale & retail | 2020 |
| Killick Construction and Joinery Ltd | Construction | 2025 |
| Kima Transport Ltd | Transport & logistics | 2026 |
| KIMBO65 Limited | Financial services | 2013 |
| Kimico Dwellings Ltd | Households | 2022 |
| Kimoy Kirnon Cuttings Ltd | Other services | 2013 |
| Kinetic Technologies Ltd | Information & communication | 2019 |
| Kinetix Transport Ltd | Transport & logistics | 2025 |
| King French Polishing Limited | Other services | 2025 |
| Kingarland Limited | Households | 1960 |
| Kingdom Connection International Church (Kcic) | Other services | 2022 |
| Kingdom Strength and Conditioning Limited | Arts & recreation | 2017 |
| Kingdom Wealth Associates Ltd | Real estate | 2025 |
| Kingdom Welfare Ltd | Health & social care | 2013 |
| Kingfisher Building Solutions Ltd | Construction | 2024 |
| Kingfishers (Sonora 6) Management Limited | Households | 2003 |
| Kingfishers (Sonora 7) Management Limited | Households | 2004 |
| Kings Hill Cars Limited | Transport & logistics | 2009 |
| Kings Hill People Consulting Ltd | Professional & scientific | 2018 |
| Kingsgate Castle Residents Limited | Households | 1960 |
| Kingshand Cleaning Ltd | Administrative & support | 2020 |
| Kingsway Motor Services Ltd | Wholesale & retail | 2022 |
| Kingswood Properties Ltd | Real estate | 2015 |
| Kiraak Limited | Hospitality | 2024 |
| Kiryat Cleaners Plus Ltd | Other services | 2025 |
| Kish Chau Ltd | Construction | 2021 |
| Kissova Consultancy Limited | Financial services | 2025 |
| Kitchen BEE Design Limited | Professional & scientific | 2017 |
| Kite Holdings Ltd | Real estate | 2020 |
| Kites Letting Services Ltd | Real estate | 2004 |
| Kiyaan Sourcing Solutions Ltd | Administrative & support | 2025 |
| KJ Build Investment Limited | Real estate | 2025 |
| KJ Stockist Limited | Wholesale & retail | 2021 |
| KJM Kent Ltd | Hospitality | 2026 |
| Kjmahon Engineering Ltd | Construction | 2012 |
| KK Construction Ltd | Construction | 2016 |
| KKC Solutions Ltd | Information & communication | 2024 |
| KKM Services Ltd | Health & social care | 2015 |
| Kkmd Property & Investment Ltd | Real estate | 2025 |
| KKS Builders Merchants Ltd | Wholesale & retail | 2023 |
| Kksra Limited | Real estate | 2005 |
| KKW Kent (UK) Ltd | Financial services | 2023 |
| Kkyuzai Ltd | Information & communication | 2018 |
| Klair Construction Limited | Construction | 2002 |
| Klau Speed Limited | Transport & logistics | 2017 |
| Kleef Ltd | Information & communication | 2020 |
| Klin Eazy Limited | Administrative & support | 2025 |
| KLJ Aesthetics Ltd | Other services | 2022 |