| KMI Foods Limited | Hospitality | 2025 |
| KMI Oral Healthcare Limited | Health & social care | 2011 |
| KMK Buttle Ltd | Real estate | 2020 |
| KMK Couriers Ltd | Transport & logistics | 2010 |
| KMK Estates Ltd | Real estate | 2021 |
| KMK Haulage Limited | Transport & logistics | 2026 |
| KMK Loha Ltd | Real estate | 2018 |
| Kmkm Invest Ltd | Households | 2023 |
| KML Group Limited | Construction | 2016 |
| Kmlt Partnership Limited | Real estate | 2016 |
| KMM Property Maintenance Ltd | Households | 2015 |
| KMP Rail Ltd | Construction | 2019 |
| KMR Finance Limited | Professional & scientific | 2023 |
| KMR Holdings Ltd | Financial services | 2019 |
| KMR Transport Limited | Transport & logistics | 2019 |
| KMR Travel Ltd | Transport & logistics | 2017 |
| KMS (London) Limited | Wholesale & retail | 1998 |
| KMS Accountancy Ltd | Professional & scientific | 2017 |
| KMS Accountants Ltd | Professional & scientific | 2023 |
| Kmum Food Limited | Hospitality | 2024 |
| KMW Investments & Asset Management Ltd | Financial services | 2021 |
| KMW Pharma Ltd | Wholesale & retail | 2022 |
| KMX Automotive Ltd | Wholesale & retail | 2026 |
| KMX Karts Limited | Manufacturing | 2002 |
| KMY Pro-Serv Ltd | Construction | 2019 |
| KMZ Transport Ltd | Transport & logistics | 2014 |
| KN Brunch Ltd | Hospitality | 2025 |
| KN Cars Limited | Wholesale & retail | 2015 |
| KN Co & Limited | Manufacturing | 2018 |
| KN Gadgets Ltd | Wholesale & retail | 2025 |
| KN Rehal Ltd | Financial services | 2021 |
| KNA Business Ltd | Hospitality | 2026 |
| KNA Legal Services Ltd | Professional & scientific | 2024 |
| KNA Solutions Ltd | Administrative & support | 2025 |
| Knac Health Limited | Health & social care | 2015 |
| Knas Ecommerce Ltd | Wholesale & retail | 2023 |
| KNB UK Ltd | Transport & logistics | 2025 |
| Kncommerce Limited | Wholesale & retail | 2026 |
| KND Carpentry Limited | Manufacturing | 2025 |
| Kndj Ventures Ltd | Transport & logistics | 2018 |
| Knead to EAT Pizza Co Ltd | Hospitality | 2026 |
| Kneecare Ltd | Health & social care | 2013 |
| Knest Social Ltd | Information & communication | 2025 |
| Kneup Family Holding Limited | Financial services | 2018 |
| KNF Carpentry Ltd | Manufacturing | 2026 |
| KNG Fashion Tailor Ltd | Other services | 2025 |
| KNG Investments Ltd | Real estate | 2022 |
| KNG Property Group Ltd | Construction | 2026 |
| KNH Developments Limited | Real estate | 2024 |
| KNI Commercial Limited | Wholesale & retail | 2026 |
| Knia Design Limited | Professional & scientific | 2021 |
| Knibbs Properties Ltd | Real estate | 2023 |
| Knight Andrew Limited | Real estate | 2018 |
| Knight Andrew Residential Limited | Real estate | 2020 |
| Knight Distribution Ltd | Wholesale & retail | 2023 |
| Knight Global Services Ltd | Professional & scientific | 2025 |
| Knight One Limited | Wholesale & retail | 2024 |
| Knight Parker Properties Ltd | Real estate | 2020 |
| Knight Parker Wealth Management LLP | | 2013 |
| Knight Property Investments Limited | Construction | 2017 |
| Knight Richersons Limited | Construction | 2020 |
| Knight Silversmith Group Limited | Manufacturing | 2023 |
| Knight Wood Accommodation Ltd | Real estate | 2025 |
| Knight Wood Investments Limited | Real estate | 2025 |
| Knight Wood Property Developments Limited | Real estate | 2025 |
| Knightledger Limited | Professional & scientific | 2026 |
| Knightley Homes GB Ltd | Health & social care | 2021 |
| Knightley Homes TW Ltd | Health & social care | 2023 |
| Knightley Housing Ltd | Real estate | 2024 |
| Knightlow Care Home Limited | Health & social care | 2025 |
| Knightlow Estates Limited | Real estate | 2025 |
| Knightlow Fitness Studio Ltd | Arts & recreation | 2017 |
| Knightlow Foods Limited | Wholesale & retail | 2022 |
| Knightlow Investments (Harborne) Ltd | Wholesale & retail | 2018 |
| Knightlow Investments Ltd | Real estate | 2017 |
| Knighton Smiles Ltd | Health & social care | 2026 |
| Knights Alliance Ltd | Hospitality | 2019 |
| Knights Coffee House Limited | Hospitality | 2019 |
| Knights Consulting Services Ltd | Other services | 2025 |
| Knights Grange Limited | Real estate | 2025 |
| Knights Hill Group Limited | Real estate | 2024 |
| Knights Hospitality Group Ltd | Hospitality | 2025 |
| Knights House Developments Ltd | Real estate | 2016 |
| Knights House Property Management Ltd | Real estate | 2019 |
| Knights Icpo Security Ltd | Administrative & support | 2020 |
| Knights of Old Limited | Transport & logistics | 1957 |
| Knights Property Developments Ltd | Construction | 2024 |
| Knightsbridge (BP) Limited | Real estate | 2019 |
| Knightsbridge Care Services Limited | Health & social care | 2011 |
| Knightsbridge Court (Kingshurst) Management Company Limited | Real estate | 1986 |
| Knightsbridge Developments WM Ltd | Construction | 2017 |
| Knightsbridge Group Limited | Financial services | 2016 |
| Knightsbridge Housing Services Ltd | Real estate | 2025 |
| Knightsbridge Human Resources Consultancies Ltd | Professional & scientific | 2025 |
| Knightsbridge Investments Group Ltd | Real estate | 2022 |
| Knightsbridge Mortgages and Broker Services Ltd | Financial services | 2019 |
| Knightsbridge One Limited | Construction | 2022 |
| Knightsbridge Recruitment & Consultancy Ltd | Professional & scientific | 2023 |
| Knightsbridge Support Ltd | Real estate | 2025 |
| Knightshall Group Limited | Financial services | 2025 |