| KHM Business Services Ltd | Professional & scientific | 2016 |
| KHM London Ltd | Real estate | 2024 |
| KHM Midlands Ltd | Real estate | 2025 |
| Khodal Private Limited | Other services | 2026 |
| Khodiyar Holdings Ltd | Construction | 2018 |
| Khog Enterprise Limited | Hospitality | 2024 |
| Khogianai Enterprise Limited | Hospitality | 2026 |
| Khorana Properties Ltd | Real estate | 2023 |
| Khost Fresh Fruit&Veg Ltd | Wholesale & retail | 2026 |
| KHS Karia Properties Ltd | Real estate | 2019 |
| KHT Courier Limited | Transport & logistics | 2015 |
| KHU1 Ltd | Hospitality | 2019 |
| Khushal Properties Ltd | Real estate | 2021 |
| Khushi Global Ltd | Wholesale & retail | 2023 |
| Khushi International UK Ltd | Wholesale & retail | 2018 |
| Khushi Leicester Ltd | Manufacturing | 2019 |
| Khyam (UK) Ltd | Wholesale & retail | 2019 |
| Khyber Cuisine Ltd | Hospitality | 2026 |
| Khyber Ltd | Transport & logistics | 2023 |
| Khyber Taste Ltd. | Hospitality | 2018 |
| KI Pharma Ltd | Health & social care | 2017 |
| Kiah Investments Limited | Real estate | 2017 |
| Kiana Consultant Limited | Professional & scientific | 2025 |
| Kiana Hotels Limited | Hospitality | 2021 |
| Kiar Holdings Limited | Professional & scientific | 2016 |
| Kiara Diamonds Limited | Wholesale & retail | 2023 |
| Kiara Locums Ltd | Health & social care | 2022 |
| Kiara Smiles Ltd | Real estate | 2024 |
| Kiasa UK Ltd | Wholesale & retail | 2019 |
| Kibungo Services Ltd | Health & social care | 2020 |
| Kibworth Auto Electrics Ltd | Wholesale & retail | 2025 |
| Kibworth Barber Limited | Other services | 2022 |
| Kibworth Commercial Ltd | Wholesale & retail | 2019 |
| Kibworth DIY Limited | Wholesale & retail | 2011 |
| Kibworth GUN Club Limited | Wholesale & retail | 2018 |
| Kibworth Hall Estates Limited | Real estate | 2016 |
| Kibworth Osteopaths Ltd | Health & social care | 2019 |
| Kibworth Railway Ltd | Hospitality | 2022 |
| Kibworth Road Management Company Ltd | Households | 2022 |
| Kibworth Swan 2017 Limited | Hospitality | 2013 |
| Kibworth Tax Services Limited | Professional & scientific | 2017 |
| Kibworth Trustee Services Limited | Administrative & support | 2020 |
| Kicheri Ltd | Hospitality | 2024 |
| Kick Investments Limited | Real estate | 2019 |
| Kickstart Mortgage Services Ltd | Financial services | 2021 |
| Kid's Knee Foundation | Health & social care | 2023 |
| Kidaroo Child Care Limited | Education | 2007 |
| Kidco Holdings Ltd | Financial services | 2026 |
| Kidda Body & Mind Ltd | Wholesale & retail | 2021 |
| Kidda Records Limited | Information & communication | 2016 |
| Kiddi Corporation Ltd | Financial services | 2021 |
| Kiddisafe Ltd | Health & social care | 2014 |
| Kiddled Limited | Other services | 2019 |
| Kiddy Kapers Daycare Ltd | Education | 2007 |
| Kiddy Kapers Daycare Thurnby Limited | Education | 2025 |
| Kiddy Shoe Company (Leicester) Limited | | 1927 |
| Kids Corner Nursery Limited | Education | 2012 |
| Kids N Karts Limited | Arts & recreation | 2014 |
| Kidsaw Limited | Wholesale & retail | 2006 |
| Kiefer Gullen Limited | Professional & scientific | 2022 |
| Kien Limited | Wholesale & retail | 2011 |
| Kieran Northall Plumbing & Heating Limited | Construction | 2013 |
| Kieron Gibson Limited | Administrative & support | 2021 |
| Kifi Lets Ltd | Real estate | 2019 |
| Kiiki Ltd | Other services | 2020 |
| Kiing Couriers Ltd | Transport & logistics | 2023 |
| Kiki's Bistro Ltd | Hospitality | 2024 |
| Kikli Group Ltd | Arts & recreation | 2024 |
| Kilbourne & West Limited | Financial services | 2024 |
| Kilby Estates Limited | Construction | 2010 |
| Kilby Bridge Garage Limited | Wholesale & retail | 1964 |
| Kilby Court Developments Limited | Construction | 2016 |
| Kilby Transport Ltd | Transport & logistics | 2014 |
| Kilby Warren Developments Limited | Construction | 2025 |
| Kilian Estates Ltd | Real estate | 2024 |
| Kilimani Investments Limited | Real estate | 2024 |
| Killala Limited | Agriculture & fishing | 2021 |
| Killicommerce Ltd | Wholesale & retail | 2025 |
| Killiney UK Limited | Real estate | 2005 |
| Kilminjaro Cafe and Restaurant Ltd | Hospitality | 2023 |
| Kilnair Limited | Health & social care | 1997 |
| Kilndown Duty Ltd | Transport & logistics | 2018 |
| Kilnwick Logistics Ltd | Transport & logistics | 2014 |
| Kilvin Ltd | Professional & scientific | 2019 |
| Kilwardby House (Ashby) Management Company Ltd | Households | 2025 |
| Kilworth Garage Ltd | Wholesale & retail | 2024 |
| KIM Security Services Ltd | Administrative & support | 2017 |
| Kimberley Jayne Ltd | Hospitality | 2026 |
| Kimberley Logistics (UK) Limited | Transport & logistics | 2009 |
| Kimberley Properties (Leicester) Limited | Real estate | 2009 |
| Kimberley Railway Cutting Limited | Financial services | 2021 |
| Kimberly Care Services Ltd | Health & social care | 2023 |
| Kimbridge Traditional Ltd | Hospitality | 2016 |
| Kimico Import & Export Ltd | Wholesale & retail | 2024 |
| KIN Properties Limited | Real estate | 2017 |
| Kinara Learning Ltd | Education | 2026 |
| Kinbo Limited | Wholesale & retail | 2023 |
| Kind Acts Investment Ltd | Real estate | 2025 |
| Kind Hearts Home Care Ltd | Public administration | 2025 |
| Kind Time Limited | Health & social care | 2021 |