| KJM Pro Co Ltd | Professional & scientific | 2025 |
| KJM Property Solutions NW Ltd | Real estate | 2020 |
| KJM Resources Limited | Administrative & support | 2016 |
| KJM Trading Ltd | Wholesale & retail | 2020 |
| KJN Projects Limited | Professional & scientific | 2023 |
| Kjop Developments Limited | Real estate | 2024 |
| KJP Houses Ltd | Real estate | 2019 |
| Kjpropertycollection Limited | Real estate | 2025 |
| Kjrb Holdings Limited | Financial services | 2025 |
| KJS Maintenance Ltd | Administrative & support | 2010 |
| KJV Holdings Ltd | Financial services | 2025 |
| KK Accountants Ltd | Professional & scientific | 2020 |
| KK Designs Ltd | Wholesale & retail | 2025 |
| KK Environmental Limited | Professional & scientific | 2020 |
| KK Essentials Ltd | Wholesale & retail | 2025 |
| KK Medical Ventures Ltd | Real estate | 2010 |
| KK Operations Limited | Professional & scientific | 2019 |
| KK Phone Limited | Wholesale & retail | 2025 |
| KKA ID Limited | Professional & scientific | 2022 |
| KKA Limited | Professional & scientific | 1986 |
| KKC Liverpool Limited | Real estate | 2009 |
| KKM Cleaning Ltd | Administrative & support | 2025 |
| KKM Takeaway Ltd | Hospitality | 2026 |
| KKR Credit Advisors (UK) LLP | | 2011 |
| KKZ Football Community CIC | Education | 2026 |
| KKZ Football Ltd | Arts & recreation | 2023 |
| KL Beauty LAB Limited | Other services | 2026 |
| KL NW Developments Ltd | Construction | 2023 |
| KL Properties NW Ltd | Real estate | 2024 |
| KL Steelfixing Ltd | Construction | 2023 |
| KL Studio Ltd | Real estate | 2025 |
| Kla-Tencor Limited | Information & communication | 1981 |
| Klaslo Property Ltd | Real estate | 2025 |
| KLB Decorators Ltd | Construction | 2025 |
| KLC Facilities Limited | Administrative & support | 2025 |
| KLC Services Ltd | Other services | 2019 |
| Kldtrading Limited | Professional & scientific | 2024 |
| KLE Property Ltd | Real estate | 2019 |
| Kleargrade Ltd | Manufacturing | 2014 |
| Kleen Drain Limited | Administrative & support | 2024 |
| Kleena Days Ltd | Administrative & support | 2023 |
| Klein Haus Consultancy Ltd | Professional & scientific | 2024 |
| Klekshi Limited | Wholesale & retail | 2025 |
| Klenz Limited | Wholesale & retail | 2004 |
| Klenzz Ltd | Other services | 2020 |
| Kleos Properties Limited | Real estate | 2022 |
| Kles Professional Services Ltd | Professional & scientific | 2013 |
| KLF Parties Ltd | Arts & recreation | 2021 |
| Klidoscpe Educational Psychology Services Ltd | Education | 2024 |
| Klieveland Developments Limited | Real estate | 2005 |
| Klin Property Liverpool Ltd | Real estate | 2015 |
| Klin Property London Ltd | Real estate | 2020 |
| Klin Ventures Limited | Professional & scientific | 2024 |
| Klixzi Limited | Wholesale & retail | 2021 |
| KLJ Consultancy Ltd | Professional & scientific | 2025 |
| KLK Contracts Ltd | Professional & scientific | 2024 |
| KLK Property (NW) Limited | Real estate | 2023 |
| KLM Collective Events Limited | Professional & scientific | 2025 |
| Kloo Media Ltd | Hospitality | 2025 |
| Klop Estates Limited | Real estate | 2018 |
| Klopp Engineering Ltd | Construction | 2018 |
| Kloszardos Limited | Transport & logistics | 2025 |
| Kloud 365 Ltd | Information & communication | 2017 |
| Kloudpad Holdings Limited | Manufacturing | 2015 |
| KLS Competitions Ltd | Arts & recreation | 2023 |
| KLS Medical Services Limited | Health & social care | 2025 |
| KLS Planning Limited | Wholesale & retail | 2025 |
| KLT Building Services Limited | Construction | 2012 |
| KLT Developments Ltd | Real estate | 2022 |
| KLT Media Ltd | Professional & scientific | 2016 |
| KLT Rail Ltd | Construction | 2026 |
| Klubfiller Ltd | Other services | 2012 |
| KLZ Ltd | Transport & logistics | 2020 |
| KM & PL Properties Limited | Real estate | 2018 |
| KM Aerial and Satellite Services Limited | Construction | 2007 |
| KM Beers Props Ltd | Other services | 2019 |
| KM Beers OPS Limited | Other services | 2026 |
| KM Beers Top Co Limited | Other services | 2026 |
| KM Brothers Limited | Wholesale & retail | 2022 |
| KM Commissioning Management Ltd | Construction | 2026 |
| KM Health (NW) Ltd | Health & social care | 2021 |
| KM NW Management Limited | Hospitality | 2025 |
| KM Property NW Ltd | Real estate | 2025 |
| KM Signature Living Limited | Real estate | 2025 |
| KM Wave Investment Ltd | Real estate | 2021 |
| Kmabel Ltd | Manufacturing | 2025 |
| Kmac Lydiate Developments Limited | Real estate | 2023 |
| KMB Pro Ltd | Construction | 2021 |
| KMC Community Projects Ltd | Arts & recreation | 2018 |
| KMC Education Limited | Arts & recreation | 2019 |
| KMC Facades Ltd | Construction | 2024 |
| KMC Foods Limited | Wholesale & retail | 2014 |
| KMC Law Limited | Professional & scientific | 2023 |
| KMC Legal Ltd | Professional & scientific | 2020 |
| KMC Sports Ltd | Arts & recreation | 2017 |
| Kmcmahon Electrical Ltd | Construction | 2019 |
| KMD Planning and Property Management Limited | Professional & scientific | 2012 |
| Kmdiem Consulting Limited | Professional & scientific | 2016 |
| KME Property Solutions Ltd | Real estate | 2022 |
| KMF Care Ltd | Health & social care | 2025 |