| Kempston Court Limited | Households | 2016 |
| KEN Parry Automation Ltd | Wholesale & retail | 2012 |
| KEN Roberts Ltd | Other services | 2018 |
| KEN Ronan Builders Limited | Construction | 2024 |
| Kenber Construction Ltd | Construction | 2020 |
| Kenbury Homes Ltd | Financial services | 2023 |
| Kendal Retail Ltd | Real estate | 2023 |
| KENDAL12 Ltd | Hospitality | 2022 |
| Kendall Knight Limited | Wholesale & retail | 2023 |
| Kendelta Ltd | Other services | 2007 |
| Kendo Prime Media Limited | Information & communication | 2017 |
| Kendu Ltd | Information & communication | 2026 |
| Kenfill Limited | Administrative & support | 2017 |
| Kenic Technologies Ltd | Information & communication | 2026 |
| Kenjan Services Limited | Professional & scientific | 2024 |
| Kenlan Trading Limited | Professional & scientific | 1989 |
| Kenmore Owners (Property Management) Limited | Households | 2022 |
| Kennan Doyle Solicitors Limited | Professional & scientific | 2018 |
| Kennedy Consulting Services Group Ltd | Professional & scientific | 2023 |
| Kennedy Consulting Services Ltd | Administrative & support | 2019 |
| Kennedy Events Ltd | Wholesale & retail | 2025 |
| Kennedy Kleans and Events Limited | Wholesale & retail | 2024 |
| Kennelpak Group Ltd | Wholesale & retail | 2017 |
| Kennelpak Holdings Ltd | Wholesale & retail | 2017 |
| Kennelpak Limited | Wholesale & retail | 1973 |
| Kenneth Acock Limited | Transport & logistics | 1963 |
| Kenneth Gregory John Limited | Transport & logistics | 2023 |
| Kennington Developments Limited | Construction | 2004 |
| Kennington Waters Trading Limited | Professional & scientific | 2018 |
| Kenny Bargain Ltd | Wholesale & retail | 2025 |
| Kenny Electrical Services Ltd | Construction | 2023 |
| Kenny Property Group Limited | Real estate | 2022 |
| Kennyade Limited | Health & social care | 2023 |
| Kenrobbo Limited | Public administration | 2024 |
| Kensington & Edinburgh Estates (South Woodham Ferrers) Limited | Construction | 2012 |
| Kensington Clutch Centre Ltd | Wholesale & retail | 2018 |
| Kensington Desserts Ltd | Hospitality | 2024 |
| Kensington Fields Limited | Hospitality | 2019 |
| Kensington Hot Food Ltd | Hospitality | 2026 |
| Kensington Kebab House Ltd | Hospitality | 2024 |
| Kensington Pizzaclub Limited | Hospitality | 2024 |
| Kensington PUB Company Limited | Hospitality | 2005 |
| Kensington Settle Cars Ltd | Administrative & support | 2026 |
| Kensington Small Shop Ltd | Wholesale & retail | 2025 |
| Kensington Street Garage Limited | Wholesale & retail | 2024 |
| Kensington Superstore Ltd | Wholesale & retail | 2021 |
| Kensington Takeaway Ltd | Other services | 2019 |
| Kensington Webservices Solutions Limited | Professional & scientific | 2020 |
| Kensingtonvision Community Interest Company | Information & communication | 2007 |
| Kentbury Medical Limited | Health & social care | 2014 |
| Kenvolt Integrated Group UK Ltd | Wholesale & retail | 2026 |
| Kenyon Fraser (Holdings) Limited | Financial services | 2014 |
| Kenyon Fraser Limited | Professional & scientific | 1995 |
| Kenyon Lane Limited | Financial services | 2017 |
| KEO Hospital ITY Ltd | Hospitality | 2026 |
| Keppie Massie Limited | Real estate | 2008 |
| KER International Limited | Construction | 2019 |
| Kera Mortgages Ltd | Financial services | 2024 |
| Kerbhub Limited | Construction | 2020 |
| Kerbside Mobile Mechanics Ltd | Wholesale & retail | 2025 |
| Kerdistone Trading Limited | Professional & scientific | 2021 |
| Kermani Buildings Ltd | Construction | 2025 |
| Kernlow Host Limited | Information & communication | 2025 |
| Kerr & Brown Group Limited | Wholesale & retail | 2025 |
| Kerr & Brown Property Services Ltd | Real estate | 2020 |
| Kerr & Co Limited | Professional & scientific | 2016 |
| Kerry Capital Limited | Professional & scientific | 2019 |
| Kerry Foster Aesthetics Ltd | Other services | 2016 |
| Kerrys Fitness Ltd | Arts & recreation | 2020 |
| Kersh Commercail Ltd | Real estate | 2018 |
| Kersh Worral Commercial Limited | Real estate | 2018 |
| Kerslake Home Heating and Energy Ltd | Construction | 2021 |
| KES (NW) Limited | Professional & scientific | 2014 |
| KES Cardiac Diagnostics Ltd | Health & social care | 2022 |
| Keshet Partners Limited | Real estate | 2024 |
| Kessia Lola AESTHETICS1 Limited | Other services | 2023 |
| Kestrel Court (Blundell Sands) Limited | Real estate | 2002 |
| Kestrel Ethical Limited | Financial services | 2022 |
| Ketkapi Ltd | Wholesale & retail | 2025 |
| Kettlebell Cafe Limited | Hospitality | 2025 |
| KEV Swan Roofing Limited | Construction | 2012 |
| Kevil Ltd | Hospitality | 2025 |
| Kevin Morland Hypnotherapy and NLP Ltd | Health & social care | 2024 |
| Kevin Renshall SW Ltd | Health & social care | 2025 |
| Kevin Ward Heating and Plumbing Ltd | Construction | 2012 |
| Kevinmc Limited | Other services | 2019 |
| Kevio Limited | Real estate | 2022 |
| Kevweb Property Solutions Ltd | Real estate | 2025 |
| KEW Construction Ltd | Construction | 2019 |
| Kewin Lets Ltd | Real estate | 2013 |
| Kewin Properties Investments Ltd | Construction | 2025 |
| Kewin Properties Ltd | Real estate | 2019 |
| Key Cloud Solutions Limited | Information & communication | 2017 |
| Key Estates Ltd | Real estate | 2018 |
| Key One Developments Ltd | Information & communication | 2025 |
| Key Qualities Upvc Window and Door Repairs Ltd | Construction | 2023 |
| Key Security Systems Limited | Construction | 1986 |
| Key Turn Estates Ltd | Real estate | 2022 |
| Keycheck Property Reports Ltd | Real estate | 2026 |
| Keyes Electrical Ltd | Construction | 2024 |