| KUN Holdings Ltd | Financial services | 2023 |
| Kunafatea Takeaway (Leeds) Ltd | Hospitality | 2024 |
| Kung FU Noodle MCR Ltd | Hospitality | 2024 |
| Kungfu Catering Ltd | Hospitality | 2024 |
| Kunyun HEY Ltd | Wholesale & retail | 2025 |
| Kura Organics Limited | Wholesale & retail | 2019 |
| Kurbani Properties Ltd | Real estate | 2024 |
| Kurbus Store Ltd | Wholesale & retail | 2026 |
| Kurd CUT Ltd | Other services | 2026 |
| Kurd Production Ltd | Other services | 2020 |
| Kurdia Build Ltd | Construction | 2021 |
| Kurdiabuilder Ltd | Construction | 2026 |
| Kurdish Hand Carwash 2024 Ltd | Administrative & support | 2024 |
| Kurdish Modern Barbers Limited | Other services | 2022 |
| Kurdish Style BBR Ltd | Other services | 2024 |
| Kurrle Properties Ltd | Real estate | 2025 |
| Kurrle Solutions Ltd | Information & communication | 2024 |
| Kurtis' Beautiful Properties Ltd | Real estate | 2025 |
| Kurtuldu Ltd | Professional & scientific | 2024 |
| Kurvature Consulting Limited | Information & communication | 2022 |
| Kutchakelly Enterprises Limited | Professional & scientific | 2019 |
| Kutchakelly Property Limited | Financial services | 2022 |
| Kuwa Pilates Ltd | Education | 2023 |
| Kuwaza Healthcare Limited | Administrative & support | 2022 |
| Kuwira Ltd | Information & communication | 2022 |
| KV Hardas Private Ltd | Wholesale & retail | 2026 |
| Kvaerner Contracting Limited | Professional & scientific | 2011 |
| Kvaser Consulting Limited | Professional & scientific | 2011 |
| KVC Kleenacar Limited | Administrative & support | 1990 |
| KVF Tech Ltd | Arts & recreation | 2016 |
| KVH Media Group International Limited | Information & communication | 1953 |
| KVH Media Group Limited | Professional & scientific | 2008 |
| KVK Plant Hire Limited | Other services | 2018 |
| KW HR Consulting Limited | Administrative & support | 2022 |
| KW Sports Limited | Professional & scientific | 2023 |
| Kwaebibirem Agri Business & Environmental Development Ltd | Agriculture & fishing | 2017 |
| Kwell Heating Ltd | Construction | 2020 |
| Kwick Kourier Ltd | Transport & logistics | 2023 |
| Kwick Vape Limited | Wholesale & retail | 2025 |
| Kwik FIX Phone & Accessories Limited | Wholesale & retail | 2020 |
| Kwik Glass Limited | Wholesale & retail | 2019 |
| Kwik KAB Ltd | Administrative & support | 2019 |
| Kwik Keys Ltd | Manufacturing | 2025 |
| Kwik LOK (U.K.) Limited | Manufacturing | 2017 |
| Kwong Fook Limited | Hospitality | 2021 |
| KWR Communications Limited | Information & communication | 2013 |
| KWS Enterprises Ltd | Administrative & support | 2026 |
| KWS Installations Ltd | Administrative & support | 2026 |
| KWS Products Ltd | Wholesale & retail | 2023 |
| Kyam Limited | Real estate | 2021 |
| Kyda Holdings Limited | Financial services | 2025 |
| Kyda Investments Limited | Financial services | 2025 |
| Kyda Partners Ltd | Administrative & support | 2020 |
| Kyle Barbers Limited | Other services | 2023 |
| Kyle Joseph Interiors Ltd | Professional & scientific | 2021 |
| Kyle Wood Electrical Ltd | Construction | 2026 |
| Kylo North Ltd | Administrative & support | 2026 |
| Kymh Properties Ltd | Real estate | 2025 |
| Kyne Productions Limited | Professional & scientific | 2018 |
| Kyno Ltd | Real estate | 2019 |
| Kyops Powder Coating Limited | Manufacturing | 2012 |
| Kyotera Limited | Health & social care | 2017 |
| Kyoto Network Ltd | Wholesale & retail | 2022 |
| KYS Insulation Ltd | Manufacturing | 2020 |
| Kyte Travel Limited | Information & communication | 2009 |
| Kyvior Ltd | Wholesale & retail | 2025 |
| KYW Construction UK Ltd | Construction | 2022 |
| Kyzen Hospitality Ltd | Hospitality | 2024 |
| KZ Investments | Financial services | 2014 |
| KZS Consulting Ltd | Professional & scientific | 2017 |
| KZS Technlogies Ltd | Information & communication | 2025 |
| L & J Bookkeeping Limited | Professional & scientific | 2007 |
| L & a Assets Limited | Financial services | 2026 |
| L & B Maintenance Ltd | Construction | 2024 |
| L & H Beauty Studios Ltd | Other services | 2018 |
| L & J Legacy Ltd | Real estate | 2025 |
| L & L Capital Investments Limited | Real estate | 2017 |
| L & L Capital Limited | Real estate | 2015 |
| L & L Mansions Ltd | Real estate | 2020 |
| L & M Property (2019) Ltd | Real estate | 2003 |
| L & M Services (Leeds) Ltd | Construction | 2018 |
| L & N Chadwick Enterprises Ltd | Administrative & support | 2025 |
| L & N Hair & Beauty Supplies Limited | Wholesale & retail | 2006 |
| L & R Transport & Sales Ltd | Wholesale & retail | 2023 |
| L & S Assets and Developments Limited | Real estate | 2017 |
| L & T Trades Limited | Financial services | 2024 |
| L a Fitness Limited | Arts & recreation | 1996 |
| L B Roofing Leeds Ltd | Construction | 2024 |
| L Boughan Limited | Administrative & support | 2015 |
| L Brown Developments Ltd | Real estate | 2025 |
| L C Builders Ltd | Construction | 2026 |
| L Charlton Electrical Ltd | Construction | 2024 |
| L Cuffe Consulting Ltd | Professional & scientific | 2025 |
| L D Digital Limited | Professional & scientific | 2019 |
| L D Griffiths Plumbing & Heating Limited | Construction | 2026 |
| L Dawson Consultancy Limited | Information & communication | 2025 |
| L Elliott Safety Services Ltd | Construction | 2017 |
| L Environmental Group Limited | Construction | 2018 |
| L F Services (Leeds) Ltd | Construction | 2024 |
| L Francis Construction Limited | Construction | 2021 |