| KLS Marketing Limited | Professional & scientific | 2025 |
| KLW Marketing Ltd | Professional & scientific | 2023 |
| KM (Outlets) Limited | Wholesale & retail | 2016 |
| KM Interior Solutions Ltd | Wholesale & retail | 2023 |
| KM Joinery Ltd | Construction | 2017 |
| KM Marketing Ltd | Administrative & support | 2020 |
| KM10 Properties Ltd | Real estate | 2025 |
| KMC Property Ventures Ltd | Real estate | 2025 |
| KMC7 Contracting Limited | Other services | 2020 |
| Kmcnmamit Ltd | Education | 2026 |
| Kmgs Consulting Limited | Information & communication | 2018 |
| Kmgs Properties Ltd | Real estate | 2020 |
| KMH Electrical Services Limited | Manufacturing | 1997 |
| KMI E Mart Ltd | Information & communication | 2025 |
| KMJ Limited | Construction | 1988 |
| KMK Asian Escorts Ltd | Other services | 2025 |
| KMN International Ltd | Education | 2017 |
| Kmpd Health Ventures Limited | Health & social care | 2024 |
| KMR Simple Solutions Limited | Financial services | 2016 |
| KMS Bespoke Ltd | Manufacturing | 2018 |
| Kmullah Limited | Wholesale & retail | 2025 |
| KMV PUB Ltd | Administrative & support | 2025 |
| KN Nails Lounge Ltd | Other services | 2026 |
| KN Tech Auto Care Ltd | Wholesale & retail | 2026 |
| KN51 Limited | Real estate | 2021 |
| Knight Evans Ltd | Professional & scientific | 2026 |
| Knights by the Burn Limited | Hospitality | 2017 |
| Knights Furnishings Limited | Wholesale & retail | 2009 |
| Knightsbridge Court (Downend) Management Company Limited | Real estate | 2016 |
| Knightsbridge Kitchens and Bathrooms Ltd | Construction | 2025 |
| Knightsbridge Management Services Limited | Professional & scientific | 2007 |
| Knock Connect Ltd | Wholesale & retail | 2025 |
| Knock Tech Limited | Wholesale & retail | 2021 |
| Knockk Ltd | Real estate | 2020 |
| Knowledge and Advice GAP Limited | Information & communication | 2019 |
| Knowledge First Academy Limited | Education | 2024 |
| KNOWLEDGE4NURSES Ltd | Education | 2014 |
| Knowledgeful Limited | Professional & scientific | 2019 |
| Knox Feeds Limited | Wholesale & retail | 1999 |
| Kobe Capital Ltd | Financial services | 2025 |
| Kobe Property Holdings Ltd | Real estate | 2024 |
| Kobi Homes Ltd | Real estate | 2025 |
| Kobit Group L Limited | Financial services | 2025 |
| Kobit Group M Limited | Financial services | 2024 |
| Kobit Group N Limited | Financial services | 2024 |
| Kobit Group Y Limited | Financial services | 2024 |
| Kobit H Limited | Hospitality | 2024 |
| Kobit I Limited | Hospitality | 2024 |
| Kobit TM Limited | Professional & scientific | 2025 |
| Kobit-A Limited | Hospitality | 2018 |
| Kobit-B Limited | Hospitality | 2019 |
| Kobit-C Limited | Hospitality | 2021 |
| Kobit-D Limited | Hospitality | 2023 |
| Kobit-E Limited | Hospitality | 2023 |
| Kobit-F Limited | Hospitality | 2023 |
| Kobit-G Limited | Hospitality | 2023 |
| Kobit-J Ltd | Hospitality | 2024 |
| Kobit-K Ltd | Hospitality | 2024 |
| Kobit-L Ltd | Hospitality | 2025 |
| Kobit-M Limited | Hospitality | 2015 |
| Kobit-N Limited | Hospitality | 2026 |
| Kobit-O Limited | Hospitality | 2026 |
| KOE Holdings Limited | Real estate | 2014 |
| KOH Europe Ltd | Manufacturing | 2018 |
| Koios Investments Limited | Professional & scientific | 2015 |
| Koios Technology Limited | Information & communication | 2018 |
| Koiyo Limited | Wholesale & retail | 2022 |
| Kojak 77 Limited | Hospitality | 2026 |
| Koldit Drive Limited | Education | 2025 |
| Kollektcurate Limited | Manufacturing | 2025 |
| Kollider Projects Limited | Real estate | 2016 |
| Kollider Social Limited | Hospitality | 2017 |
| Komfovent Ltd | Wholesale & retail | 2022 |
| Komo Limited | Information & communication | 2023 |
| Komodo Digital Limited | Information & communication | 2003 |
| Komodo Properties Limited | Real estate | 2024 |
| Koncept Living Ltd | Professional & scientific | 2025 |
| Konetis Limited | Real estate | 2023 |
| Kong Tattoo Care Europe Limited | Arts & recreation | 2026 |
| Koofan Investment Ltd | Wholesale & retail | 2026 |
| Kootchap Ltd | Real estate | 2023 |
| Koru Education Ltd | Education | 2025 |
| Koru Hypnotherapy Limited | Health & social care | 2025 |
| Kosamattom Limited | Financial services | 2024 |
| Kosmos Computers and Mobiles Ltd | Other services | 2025 |
| Kosmos Xtra Computers and Mobiles Limited | Other services | 2024 |
| Kourawholesale Ltd | Wholesale & retail | 2021 |
| Koveclub Ltd | Wholesale & retail | 2025 |
| Kowloon Express LLP | | 2024 |
| KP (NE) Properties Limited | Real estate | 2022 |
| KPA Technical Services Ltd | Professional & scientific | 2023 |
| KPC Executive Travel Limited | Transport & logistics | 2022 |
| KPH Distribution Ltd | Wholesale & retail | 2024 |
| KPI Corporate Finance Limited | Professional & scientific | 2026 |
| Kpmn Ltd | Health & social care | 2018 |
| KPS North East Limited | Real estate | 2019 |
| KPS Scaffolding Ltd | Construction | 2022 |
| Kpth Construction & Property Maintenance Ltd | Construction | 2019 |
| Kpth Properties & Land Limited | Real estate | 2019 |
| KR Fitness C.I.C. | Arts & recreation | 2020 |