| Kitbed Warwick Ltd | Wholesale & retail | 2017 |
| Kitchen and Furniture Sprayers Ltd | Other services | 2023 |
| Kitchen Direct Warehouse Ltd | Manufacturing | 2016 |
| Kitchen Kreations by Michael Limited | Wholesale & retail | 2014 |
| Kitchen Ventilation Ltd | Construction | 2024 |
| KITCHEN26 Ltd | Hospitality | 2020 |
| Kitchener Flooring Limited | Construction | 2006 |
| Kitchens 2 View Limited | Wholesale & retail | 2005 |
| Kitchens for Life Ltd | Manufacturing | 2024 |
| Kitchenstudionext Ltd | Manufacturing | 2022 |
| Kite Close Blackthorn Management Company Ltd | Households | 2025 |
| Kitmii Ltd | Professional & scientific | 2014 |
| Kitnationuk Ltd | Wholesale & retail | 2025 |
| Kitout Workwear & Uniform Ltd | Manufacturing | 2024 |
| Kitsch Properties Ltd | Real estate | 2020 |
| Kitterick Investments Ltd | Construction | 2006 |
| Kitty Cafe Leicester Limited | Hospitality | 2019 |
| Kitty Rebel Ltd | Wholesale & retail | 2018 |
| Kiza Properties Ltd | Real estate | 2021 |
| Kizyam Ltd | Health & social care | 2025 |
| KJ Golf Academy Ltd | Wholesale & retail | 2017 |
| KJ Loman Ltd | Administrative & support | 2017 |
| KJ. Master Bathrooms Ltd | Construction | 2025 |
| Kjar Ltd | Information & communication | 2021 |
| KJB Plumbing & Heating Ltd | Construction | 2015 |
| KJC Joinery Building Limited | Construction | 2011 |
| Kjcc Services Ltd | Construction | 2020 |
| Kjjh Enterprises Limited | Health & social care | 2025 |
| KJP Management Limited | Professional & scientific | 1998 |
| Kjpitn Propco Limited | Real estate | 2025 |
| KJS Advisory Limited | Professional & scientific | 2025 |
| KJS Asphalt Specialist Ltd | Construction | 2020 |
| KJS Civils Ltd | Construction | 2025 |
| KJT Electrical Contractors Ltd | Construction | 2024 |
| KJW Support Specialist Ltd | Administrative & support | 2018 |
| KK Auto Leicester Ltd | Wholesale & retail | 2018 |
| KK Bliss Ltd | Wholesale & retail | 2026 |
| KK Builder Services Ltd | Construction | 2018 |
| KK Express Transport Ltd | Transport & logistics | 2025 |
| KK Global Relocation Services Ltd | Hospitality | 2021 |
| KK Herbs Ltd | Wholesale & retail | 2013 |
| KK Industries Ltd | Wholesale & retail | 2024 |
| KK Laser & Beauty Studio Ltd | Other services | 2025 |
| KK Rental Homes Limited | Real estate | 2022 |
| KK Site Management Ltd | Construction | 2017 |
| KK Synergies Limited | Real estate | 2024 |
| KK Tax Limited | Financial services | 2025 |
| KK Taxes Holdings Limited | Financial services | 2026 |
| KK Total Compliance Limited | Professional & scientific | 2025 |
| KK Xpress Chicken and Pizza Ltd | Hospitality | 2019 |
| Kk&M Haulage Limited | Transport & logistics | 2026 |
| KKA Holdings Ltd | Financial services | 2026 |
| KKB Accounting Ltd | Professional & scientific | 2021 |
| Kkcars Leicester Ltd | Construction | 2025 |
| KKD Investment Ltd | Real estate | 2021 |
| Kkdd Property Ltd | Real estate | 2025 |
| KKM Contractors Ltd | Construction | 2023 |
| Kkmk Holdings Ltd | Financial services | 2022 |
| Kkpdg Ltd | Real estate | 2022 |
| KKS Bakery Limited | Hospitality | 2016 |
| KKS Courier Limited | Transport & logistics | 2025 |
| Kkur Ltd | Hospitality | 2026 |
| KKV Optom Ltd | Health & social care | 2023 |
| KL Rigging Services Limited | Construction | 2014 |
| Klarks Law Limited | Professional & scientific | 2015 |
| Klass Holdings Ltd | Health & social care | 2022 |
| Klauza Enterprises Ltd | Professional & scientific | 2026 |
| Klazyk Ltd | Professional & scientific | 2021 |
| KLB Electrics Ltd | Construction | 2013 |
| KLB Mortgage Services Limited | Financial services | 2023 |
| KLC Solutions Ltd | Manufacturing | 2023 |
| KLE Hospitality Ltd | Hospitality | 2025 |
| Klean Kitchen Company Ltd | Hospitality | 2026 |
| Kler Event Ltd | Hospitality | 2026 |
| KLG Management Limited | Professional & scientific | 2025 |
| Klik Investments Limited | Real estate | 2022 |
| Klinic Ltd | Health & social care | 2025 |
| Klinical Enterprises Ltd | Professional & scientific | 2021 |
| Klippon Engineering UK Limited | Wholesale & retail | 1959 |
| Klipsteen Investments Ltd | Construction | 2023 |
| Klique Investments Limited | Real estate | 2018 |
| KLK Law Limited | Professional & scientific | 2024 |
| KLM Site Limited | Construction | 2023 |
| Klman Architects Limited | Professional & scientific | 2016 |
| KLN Barbecue and Local Limited | Hospitality | 2023 |
| Klrp Consultancy Limited | Information & communication | 2024 |
| KM Commercial Services Limited | Construction | 2016 |
| KM Energy Ltd | Manufacturing | 2020 |
| KM Fashions UK Ltd | Wholesale & retail | 2025 |
| KM Fencing Ltd | Construction | 2023 |
| KM Food Wholesale Ltd | Manufacturing | 2026 |
| KM Forecourts Ltd | Administrative & support | 2010 |
| KM Kicks Limited | Wholesale & retail | 2022 |
| KM Motorsuk Limited | Wholesale & retail | 2024 |
| KM Paving & Landscaping Ltd | Administrative & support | 2021 |
| KM Sneakers Limited | Wholesale & retail | 2023 |
| KM Tempus Ltd | Transport & logistics | 2019 |
| Kmac Distributions Ltd | Wholesale & retail | 2024 |
| Kmahsha Trading Ltd | Wholesale & retail | 2022 |
| KMC Builders Limited | Construction | 2013 |