| KWS Joinery Ltd | Construction | 2023 |
| KXD TI Ltd | Administrative & support | 2022 |
| KY & Folcan Ltd | Construction | 2023 |
| Kyandii Limited | Arts & recreation | 2015 |
| KYB Property Group Ltd | Real estate | 2025 |
| KYB Trading Limited | Wholesale & retail | 2026 |
| Kyba AI Ltd | Information & communication | 2020 |
| KYD Products Limited | Wholesale & retail | 1998 |
| Kyga Digital Ltd | Information & communication | 2022 |
| Kyle Craig Media Ltd | Information & communication | 2013 |
| Kyle Lily Rigz Ltd | Administrative & support | 2015 |
| KYM Entertainment Ltd | Information & communication | 2019 |
| KYM Luxe Limited | Wholesale & retail | 2025 |
| KYM Property Limited | Real estate | 2025 |
| KYM Technology Ltd | Wholesale & retail | 2020 |
| Kyna Associates Limited | Administrative & support | 2011 |
| Kynetic Facilities Management Limited | Administrative & support | 2026 |
| Kyng's Limited | Manufacturing | 1999 |
| Kyngsman Manufacturing Ltd | Manufacturing | 2016 |
| Kyom Management Ltd | Professional & scientific | 2025 |
| Kyoto Engineering Limited | Professional & scientific | 2014 |
| Kyoto Sushi & Grill Limited | Hospitality | 2013 |
| Kyoto Sushi and Grill BHM Limited | Hospitality | 2026 |
| Kypc UK Ltd | Information & communication | 2025 |
| Kypol Electroplating Limited | Manufacturing | 1992 |
| Kyra Property Holdings Ltd | Real estate | 2025 |
| Kyrra Living Ltd | Real estate | 2026 |
| KYS Estates Limited | Real estate | 2023 |
| Kyter Lane Limited | Wholesale & retail | 2020 |
| Kyter Limited | Real estate | 2016 |
| Kyti Opulentia Land Ltd | Real estate | 2025 |
| Kytium Ltd | Information & communication | 2019 |
| Kyva Ltd | Real estate | 2026 |
| Kyvan Property Ltd | Real estate | 2024 |
| Kyvon Limited | Wholesale & retail | 2025 |
| Kyzer Clothing Ltd | Wholesale & retail | 2025 |
| Kyzote Ltd | Information & communication | 2020 |
| KZ 1 Ltd | Administrative & support | 2020 |
| KZ Consultants Ltd | Professional & scientific | 2024 |
| KZ Social Work Limited | Health & social care | 2022 |
| KZC Properties Limited | Real estate | 2024 |
| KZM Trans Limited | Transport & logistics | 2017 |
| KZR Estates Ltd | Real estate | 2025 |
| KZY Distros Ltd | Wholesale & retail | 2025 |
| König Automotive Ltd | Wholesale & retail | 2017 |
| Kōjōlink Ltd | Administrative & support | 2025 |
| L & B Lift Truck Training Services Ltd | Transport & logistics | 2012 |
| L & B Singh Ltd | Real estate | 2018 |
| L & Co Apparel Ltd | Wholesale & retail | 2016 |
| L & E Assets Ltd | Real estate | 2022 |
| L & E Holdings (Midlands) Ltd | Real estate | 2020 |
| L & F Investment Limited | Real estate | 2022 |
| L & G Recruitment Limited | Administrative & support | 2012 |
| L & GL Limited | Other services | 2017 |
| L & H Autos Ltd | Wholesale & retail | 2025 |
| L & I Trading Ltd | Professional & scientific | 2024 |
| L & J Specs Ltd | Other services | 2010 |
| L & K Engineering (UK) Limited | Professional & scientific | 2010 |
| L & L DRY Lining Ltd | Construction | 2020 |
| L & L Locksmiths Ltd | Administrative & support | 2025 |
| L & L Property (Holdings) Ltd | Real estate | 2006 |
| L & M Verma Limited | Real estate | 2022 |
| L & S Accountancy Ltd | Professional & scientific | 2023 |
| L & S Educational Services Limited | Administrative & support | 2007 |
| L & S Sparkle Bright Ltd | Administrative & support | 2020 |
| L & V Arms Ltd | Hospitality | 2024 |
| L a Cavalier Ltd | Hospitality | 2023 |
| L a H Property Limited | Construction | 2012 |
| L a Properties (Birmingham) Ltd | Real estate | 2025 |
| L a Structural Ltd | Construction | 2018 |
| L a W Media Ltd | Professional & scientific | 2024 |
| L B Pizza Ltd | Hospitality | 2019 |
| L B Properties Consultants Ltd | Real estate | 2016 |
| L Best Choice Limited | Hospitality | 2024 |
| L Blackwell Engineering Services Ltd | Manufacturing | 2009 |
| L Blessings Limited | Health & social care | 2020 |
| L C Contracting Ltd | Administrative & support | 2013 |
| L Charles Accounting Limited | Professional & scientific | 2019 |
| L D C Electrical Solutions Ltd | Construction | 2020 |
| L D P Property Limited | Real estate | 2016 |
| L E Logistics Ltd | Information & communication | 2011 |
| L Foster Autos Ltd | Wholesale & retail | 2015 |
| L G Keeley (Holdings) Limited | Financial services | 2025 |
| L G Laundry Limited | Other services | 2016 |
| L H Hair & Beauty Ltd | Other services | 2025 |
| L Impact Limited | Manufacturing | 2018 |
| L J Boyle Ltd | Financial services | 2013 |
| L J Interior Style Ltd | Wholesale & retail | 2018 |
| L J Outside Catering Limited | Hospitality | 2007 |
| L M H Motors Ltd | Wholesale & retail | 2022 |
| L Morris TM Limited | Construction | 2024 |
| L N Tuan Ltd | Wholesale & retail | 2014 |
| L Newbon Cameras Ltd | Information & communication | 2020 |
| L Olszowski Ltd | Transport & logistics | 2018 |
| L P Compliance Consultancy Ltd | Administrative & support | 2022 |
| L R Simpson Ltd | Information & communication | 2018 |
| L S Mutti Ltd | Construction | 2022 |
| L S Roofing Services Ltd | Construction | 2010 |
| L S Toth & Sons (Holdings) Limited | Financial services | 2019 |
| L S Toth & Sons Ltd | Construction | 2008 |