| Kudos Sports Mgmt Ltd | Arts & recreation | 2012 |
| Kufeji Healthcare Ltd | Health & social care | 2019 |
| Kuha Enterprise Ltd | Real estate | 2023 |
| Kukeli Brickwork Ltd | Construction | 2015 |
| Kulla Consultants Ltd | Information & communication | 2024 |
| Kulture Apparel Limited | Wholesale & retail | 2023 |
| Kulture Services Limited | Hospitality | 2026 |
| Kumar Trading Limited | Wholesale & retail | 2025 |
| Kumerica Cash and Carry Ltd | Wholesale & retail | 2021 |
| Kunashe Business Consultancy Limited | Information & communication | 2023 |
| Kunder Properties Limited | Real estate | 2018 |
| Kung Food Ltd | Hospitality | 2025 |
| Kungur Group Ltd | Wholesale & retail | 2022 |
| Kunkic Company Limited | Water & waste | 2025 |
| Kunst Global Limited | Professional & scientific | 2020 |
| Kurahluxe Beauty Limited | Other services | 2024 |
| Kurator Holdings Limited | Professional & scientific | 2015 |
| Kurator Limited | Financial services | 2018 |
| Kurator Nominees Limited | Financial services | 2011 |
| Kurator Secretaries Limited | Professional & scientific | 2009 |
| Kurator Sidings Limited | Extraterritorial | 2023 |
| Kurdish Barber Cutz Ltd | Other services | 2023 |
| Kurlieq Limited | Professional & scientific | 2015 |
| Kurpias Ltd | Transport & logistics | 2015 |
| Kusha Properties Limited | Real estate | 2003 |
| Kushansh Enterprises Ltd | Hospitality | 2025 |
| Kutir Ltd | Real estate | 2017 |
| Kutoma Ltd. | Information & communication | 2004 |
| Kutztech Limited | Information & communication | 2019 |
| KV Property Lettings Ltd | Real estate | 2026 |
| KV Worxs Limited | Wholesale & retail | 2020 |
| KVC Solutions Ltd | Professional & scientific | 2025 |
| KVG Associates Limited | Professional & scientific | 2017 |
| KVG Properties Ltd | Real estate | 2025 |
| KVS Stores Ltd | Wholesale & retail | 2019 |
| KVT Design Ltd | Information & communication | 2020 |
| KW Sales Ltd | Construction | 2025 |
| KW1Z Ltd | Arts & recreation | 2023 |
| KWA Tax Returns Online Limited | Extraterritorial | 2013 |
| Kwabialondon Limited | Manufacturing | 2016 |
| Kwabs Ltd | Administrative & support | 2021 |
| Kwadwo Ltd | Information & communication | 2024 |
| Kwatbu Company Limited | Other services | 2022 |
| Kwava UK Limited | Wholesale & retail | 2018 |
| KWL Trans Ltd | Transport & logistics | 2024 |
| Kwot Limited | Information & communication | 2022 |
| Kwyali Limited | Health & social care | 2024 |
| KXY Trading Ltd | Wholesale & retail | 2019 |
| Kylobyte Ltd | Other services | 2020 |
| Kyreng Limited | Professional & scientific | 2017 |
| Kyros Estates Limited | Real estate | 2025 |
| KZ4M Transport Ltd | Transport & logistics | 2025 |
| Kéïla Ltd | Wholesale & retail | 2026 |
| L & K Enterprise Ltd | Hospitality | 2019 |
| L & L Property Ltd | Real estate | 2015 |
| L a Thompson Limited | Financial services | 2015 |
| L Bookkeeping Ltd | Professional & scientific | 2016 |
| L C Electronics Ltd | Manufacturing | 2010 |
| L C Events Limited | Administrative & support | 2015 |
| L Douglas Electrical Services Limited | Construction | 2011 |
| L Elwin Holdings Ltd | Financial services | 2024 |
| L G Landscaping and Garden Services Ltd | Administrative & support | 2023 |
| L J F Brickwork Limited | Construction | 2016 |
| L K Williams Ltd | Administrative & support | 2022 |
| L M Solutions M K Ltd | Financial services | 2013 |
| L Marraccini UK Limited | Information & communication | 2019 |
| L Price Agricultural Ltd | Agriculture & fishing | 2025 |
| L Sheppard Group Ltd | Water & waste | 2011 |
| L T Moore Kitchens Limited | Construction | 2020 |
| L W Edward FH Limited | Real estate | 2018 |
| L W Edward Limited | Real estate | 2018 |
| L Wright Consultancy Ltd | Professional & scientific | 2016 |
| L&B Investment Group Limited | Financial services | 2024 |
| L&C Gaudi Limited | Financial services | 2003 |
| L&C MK Limited | Real estate | 2025 |
| L&E Property Group Ltd | Real estate | 2025 |
| L&J19 Consultancy Ltd | Health & social care | 2021 |
| L&M's Enterprises Ltd | Professional & scientific | 2019 |
| L&N Health Ltd | Wholesale & retail | 2022 |
| L&P Carpentry (MK) Ltd | Manufacturing | 2023 |
| L&Sons Ltd | Other services | 2019 |
| L&T Home Maintenance Ltd | Construction | 2022 |
| L&T Sealey Limited | Health & social care | 2016 |
| L&W Corporation Ltd | Transport & logistics | 2024 |
| L' Agence MK Ltd | Real estate | 2026 |
| L'Artisan Ltd | Wholesale & retail | 2013 |
| L-Sov Distribution Ltd | Wholesale & retail | 2023 |
| L.A Bylab Limited | Manufacturing | 2025 |
| L.A Site Engineering and Supervision Ltd | Construction | 2014 |
| L.A Transport Limited | Transport & logistics | 2016 |
| L.A. Trading Limited | Real estate | 1995 |
| L.C Smart Results Limited | Administrative & support | 2026 |
| L.D.A. (Architects) Limited | Professional & scientific | 1992 |
| L.F.M.K.H. Limited | Wholesale & retail | 1985 |
| L.G. Roberts (Shropshire) Limited | Administrative & support | 2003 |
| L.T.D. Contractors Limited | Construction | 2015 |
| L1 Films Ltd | Information & communication | 2022 |
| L2 Services Ltd | Professional & scientific | 2022 |
| L2MCOACHING Ltd | Administrative & support | 2025 |
| L3GACY Ltd | Households | 2017 |