| Kingdom Plant Hire Limited | Construction | 2014 |
| Kingfisher (Ashford) Limited | Extraterritorial | 2006 |
| Kingfisher (Henwood) Ltd. | Administrative & support | 1996 |
| Kingfisher Auto Repairs Limited | Wholesale & retail | 2015 |
| Kingmere Group Limited | Administrative & support | 2024 |
| Kings Barber Grooming Ltd | Other services | 2020 |
| Kings Chase (WL) Limited | Households | 1999 |
| Kings Electrical Solutions Limited | Construction | 2016 |
| Kings Electrical South East Limited | Construction | 2026 |
| Kings Park School Limited | Education | 2024 |
| Kingsbridge Estate Investments Ltd | Real estate | 2026 |
| Kingsbrooke Services Ltd | Manufacturing | 2019 |
| Kingsfords Holdings Ltd | Financial services | 2021 |
| Kingsfords Solicitors Limited | Professional & scientific | 2001 |
| Kingsley Gate Ltd | Households | 2020 |
| Kingsnorth Akshna Ltd | Hospitality | 2020 |
| Kingsnorth Appliance Repairs Limited | Other services | 2010 |
| Kingsnorth Carpentry Limited | Construction | 2006 |
| Kingsnorth Electrical Limited | Construction | 2003 |
| Kingsnorth Engineering Limited | Manufacturing | 2014 |
| Kingsnorth Golf Club & Driving Range Limited | Arts & recreation | 2014 |
| Kingsnorth Groundworks Limited | Other services | 2024 |
| Kingsnorth Group Ltd | Construction | 2021 |
| Kingsnorth Legal Costs Ltd | Administrative & support | 2017 |
| Kingsnorth Little Stars Ltd | Education | 2023 |
| Kingsnorth Medical Premises Limited | Real estate | 2021 |
| Kingsnorth Medical Services Limited | Health & social care | 2013 |
| Kingsnorth Neuro Physiotherapy UK Ltd | Health & social care | 2018 |
| Kingsnorth Scaffolding Ltd | Construction | 2005 |
| Kingsnorth Self Storage Limited | Construction | 2024 |
| Kingswood Court Management Company Limited | Other services | 2006 |
| Kingswood Sealants Limited | Administrative & support | 2016 |
| Kinnect Talent Ltd | Administrative & support | 2025 |
| Kinrade Garden Services Limited | Administrative & support | 2017 |
| Kinswood Ltd | Construction | 2020 |
| Kirant Management Services Limited | Administrative & support | 2024 |
| Kirat Religion & Literature Uplifting UK Limited | Other services | 2020 |
| Kirbys Construction Ltd | Construction | 2021 |
| Kiru Property Ltd | Real estate | 2019 |
| Kirway Healthcare Limited | Health & social care | 2023 |
| Kisa Enterprise Ltd | Wholesale & retail | 2026 |
| Kish Investments Ltd | Real estate | 2025 |
| Kishkinda Limited | Information & communication | 2013 |
| Kissology Aesthetics Ltd | Other services | 2022 |
| Kitch Ltd. | Hospitality | 2013 |
| Kitchen Generator Ltd | Manufacturing | 2006 |
| Kitchenplumb Ltd | Manufacturing | 2025 |
| Kitchens Fitter OZ Ltd | Construction | 2023 |
| Kithandie Limited | Real estate | 2019 |
| Kiya Investments Limited | Real estate | 2024 |
| KJ Mechanical Services Ltd | Wholesale & retail | 2021 |
| KJB Home Renovation Ltd | Other services | 2022 |
| KJD Anderson Ltd | Construction | 2020 |
| KJD Services Kent Limited | Other services | 2019 |
| KJF Premiums Ltd | Wholesale & retail | 2025 |
| KJI Fencing & Landscaping Ltd | Extraterritorial | 2022 |
| KJM Building Projects Limited | Construction | 2019 |
| KJN Properties Ltd | Real estate | 2016 |
| KKA24 Ltd | Construction | 2026 |
| KKH Management Consultants Limited | Information & communication | 2014 |
| KKJ Services Limited | Administrative & support | 2020 |
| Kkogun Ltd | Financial services | 2025 |
| KKW Data Solutions Limited | Professional & scientific | 2024 |
| KL Property Development Limited | Real estate | 2025 |
| Kladworx Limited | Administrative & support | 2019 |
| Klbmedia Limited | Information & communication | 2024 |
| Klecha & Co. Limited | Administrative & support | 2013 |
| Kleemann Lifts UK Limited | Manufacturing | 2011 |
| Kleverlok Ltd | Construction | 2013 |
| KLF Comms Ltd | Administrative & support | 2021 |
| Klinica Physiotherapy and Healthcare Limited | Health & social care | 2017 |
| Klinique Engineering Company Limited | Construction | 2016 |
| Klinique Technical Limited | Construction | 2024 |
| KLJ Capital Investments Ltd | Financial services | 2015 |
| Kllm Consult Ltd | Professional & scientific | 2025 |
| KLM Derm Ltd | Health & social care | 2025 |
| KM (Holdings) Limited | Information & communication | 2013 |
| KM Design Solutions Limited | Construction | 2020 |
| KM Plastering and General Building Limited | Construction | 2025 |
| KM Property Renovations Limited | Construction | 2025 |
| KM Sounds Ltd | Manufacturing | 2013 |
| Kmr.Parts Ltd | Wholesale & retail | 2025 |
| Kmtm Limited | Administrative & support | 2020 |
| KNA Property Ltd | Real estate | 2026 |
| Knar Services Ltd | Administrative & support | 2023 |
| Knight & JAY Installations Ltd | Construction | 2013 |
| Knight Brothers (Automobiles) Limited | Real estate | 1976 |
| Knights Chauffeurs Ltd | Transport & logistics | 2010 |
| Knights Mobiles Limited | Real estate | 2025 |
| Knitric Limited | Manufacturing | 2026 |
| Knjuguna Limited | Professional & scientific | 2013 |
| Knock OUT Art Ltd | Arts & recreation | 2022 |
| Knotts Carpentry Ltd | Manufacturing | 2023 |
| Know Your Numbers Business Advisors Ltd | Information & communication | 2021 |
| KNT Engineering Consultants Ltd | Administrative & support | 2010 |
| KO Property Development Limited | Construction | 2024 |
| KO Site Solutions Ltd | Other services | 2019 |
| Kochar Limited | Professional & scientific | 2024 |
| Kodoko Gurkha Distillery Limited | Manufacturing | 2020 |
| KOJ Construction Ltd | Construction | 2025 |