| KIT My Brand Ltd | Wholesale & retail | 2020 |
| Kitau Robotics Ltd | Manufacturing | 2018 |
| Kitaure Limited | Construction | 2006 |
| Kitbashbox Ltd | Information & communication | 2010 |
| KITCH3N KIN4S Ltd | Hospitality | 2022 |
| Kitchen Appliances Ltd | Wholesale & retail | 2019 |
| Kitchen Craft WC Ltd | Wholesale & retail | 2024 |
| Kitchen Door Hub Ltd | Construction | 2015 |
| Kitchen Faces Limited | Construction | 2017 |
| Kitchen Fit Plus Limited | Construction | 2018 |
| Kitchen Garden Cafe Limited | Hospitality | 2005 |
| Kitchen Garden Events Limited | Hospitality | 2024 |
| Kitchen Magic Limited | Manufacturing | 1987 |
| Kitchen School CIC | Hospitality | 2012 |
| Kitchen Solutions Limited | Professional & scientific | 2004 |
| Kitchenett Limited | Hospitality | 2025 |
| Kite Media Ltd | Professional & scientific | 2025 |
| Kite Roofing Limited | Construction | 2006 |
| Kitform Promotional Products Ltd | Administrative & support | 2005 |
| Kits for Sport LLP | | 2026 |
| Kitts Green Fried Chicken Ltd | Hospitality | 2025 |
| Kitts Green Glass & Windows Limited | Construction | 2019 |
| Kitts Green Management (12-34 Goldstar Way) Ltd | Households | 1991 |
| Kitts Green Shop Ltd | Other services | 2024 |
| Kitts Kitchen Ltd | Hospitality | 2025 |
| Kitty Angels (Solihull) Limited | Other services | 2023 |
| Kitty Angels (Warwick) Limited | Other services | 2023 |
| Kitty Angels Central Birmingham Limited | Other services | 2025 |
| Kitty Angels Group Limited | Other services | 2016 |
| Kitty Angels Halesowen Limited | Other services | 2025 |
| Kitty Angels Kidderminster Limited | Other services | 2025 |
| Kitty Angels Limited | Other services | 2017 |
| Kitty Angels South Central Limited | Other services | 2025 |
| Kitty Cafe Birmingham Limited | Hospitality | 2018 |
| Kitty's Hub Limited | Other services | 2021 |
| KIW Hospitality Limited | Hospitality | 2026 |
| Kiwi Trade Ltd | Wholesale & retail | 2025 |
| Kiwi&Pom Ltd. | Professional & scientific | 2009 |
| Kiwi&Pom Products Ltd | Professional & scientific | 2014 |
| Kixt UK Limited | Wholesale & retail | 2017 |
| Kixwaytrading Ltd | Wholesale & retail | 2022 |
| Kixx Redditch Ltd | Arts & recreation | 2021 |
| Kixx Stourbridge Ltd | Education | 2021 |
| Kixx Wolverhampton Ltd | Education | 2019 |
| Kiyani Halal Foods Ltd | Wholesale & retail | 2025 |
| Kiyiira Ltd | Wholesale & retail | 2015 |
| Kizims Limited | Wholesale & retail | 2026 |
| Kizmet Records (UK) Limited | Information & communication | 2000 |
| KJ Bristol Ltd | Hospitality | 2023 |
| KJ Digital Ventures Ltd | Wholesale & retail | 2026 |
| KJ Elite Sports Ltd | Education | 2025 |
| KJ Estates Ltd | Real estate | 2024 |
| KJ Football Academy Ltd | Arts & recreation | 2023 |
| KJ Garage Limited | Wholesale & retail | 2019 |
| KJ Jewellery Ltd | Other services | 2014 |
| KJ Mechanical Shop Ltd | Wholesale & retail | 2025 |
| KJ Midlands Ltd | Wholesale & retail | 2026 |
| KJ Singh Ltd | Hospitality | 2016 |
| KJ Solutions Limited | Professional & scientific | 2023 |
| KJ Wholesale Limited | Wholesale & retail | 2025 |
| Kjayunited Ltd | Transport & logistics | 2026 |
| KJB Foods Ltd | Hospitality | 2022 |
| KJC Food Limited | Hospitality | 2023 |
| KJD Construction Limited | Construction | 2019 |
| KJF Solutions Ltd | Administrative & support | 2019 |
| KJG Dignity Ltd | Education | 2012 |
| KJG Group Ltd | Other services | 2024 |
| KJJ Digital Ltd | Administrative & support | 2019 |
| KJM Property Investments Limited | Administrative & support | 2017 |
| KJP Maintenance & Home Improvements Ltd | Construction | 2023 |
| KJR Property Investments Limited | Real estate | 2025 |
| KJS Transport Solutions Ltd | Transport & logistics | 2020 |
| KJW Accountancy Limited | Professional & scientific | 2015 |
| KJW Bureau Limited | Professional & scientific | 2012 |
| KJW Homes Ltd | Construction | 2019 |
| KJW Property Care Ltd | Construction | 1999 |
| KJW Small Business Services Limited | Professional & scientific | 2007 |
| KK Advisory Ltd | Financial services | 2019 |
| KK Care Solutions Ltd | Health & social care | 2024 |
| KK Fuel Ltd | Wholesale & retail | 2025 |
| KK Global Commerce Ltd | Wholesale & retail | 2026 |
| KK Grooming Limited | Other services | 2022 |
| KK Mcintosh Properties Ltd | Households | 2025 |
| KK Properties Bham Ltd | Real estate | 2020 |
| KK Real Estate (WM) Ltd | Real estate | 2026 |
| KK Recycling Ltd | Wholesale & retail | 2022 |
| KK Shiners Ltd | Wholesale & retail | 2024 |
| KK Valeting Limited | Other services | 2018 |
| KK Ventures Ltd | Administrative & support | 2019 |
| Kk's Chimney Cakes Ltd | Extraterritorial | 2024 |
| Kk's Jewellery Ltd | Manufacturing | 2023 |
| KK2 Couriers Ltd | Transport & logistics | 2024 |
| KK2 Housing Ltd | Real estate | 2024 |
| Kkav Properties Ltd | Real estate | 2025 |
| KKB Assets Holdings Ltd | Real estate | 2022 |
| Kkbr Ltd | Health & social care | 2025 |
| KKH Assets Limited | Administrative & support | 2022 |
| Kkla Ltd | Real estate | 2024 |
| Kkmv Limited | Manufacturing | 2020 |
| KKR Couriers Ltd | Transport & logistics | 2026 |