| Kazi Group Holdings Limited | Financial services | 2025 |
| Kazikli Bay (Developments) Ltd | Real estate | 2006 |
| Kazopark Ltd | Information & communication | 2010 |
| Kaztec Ltd | Real estate | 2014 |
| KB 1 Care Limited | Health & social care | 2019 |
| KB Barbers Bramley Ltd | Other services | 2025 |
| KB Comfort Care Limited | Health & social care | 2026 |
| KB Construction and Building Works Limited | Construction | 2026 |
| KB Heritage Works Ltd | Construction | 2023 |
| KB Interiors (Leeds) Limited | Construction | 2017 |
| KB Leeds Limited | Other services | 2025 |
| KB Mead Limited | Financial services | 2020 |
| KB Property Investments (Leeds) Limited | Real estate | 2019 |
| KB Tax Consulting Ltd | Professional & scientific | 2025 |
| KB Tradex Ltd | Wholesale & retail | 2016 |
| KB. Technologies Ltd. | Manufacturing | 2011 |
| KBA Group Holding Limited | Real estate | 2018 |
| KBB Marketing Limited | Professional & scientific | 2022 |
| Kbfm Consulting Ltd | Information & communication | 2023 |
| Kbhb Properties Limited | Real estate | 2019 |
| KBI Property Limited | Real estate | 2016 |
| KBP Management Company Limited | Real estate | 2022 |
| KBS Alliance Ltd | Real estate | 2019 |
| KBT Coaching Ltd | Education | 2022 |
| Kburnett Ltd | Information & communication | 2019 |
| KC Commercial Cleaning Services Ltd | Administrative & support | 2018 |
| KC Gaming Services Ltd | Information & communication | 2026 |
| KC Properties 1935 Ltd | Real estate | 2019 |
| Kc&T Limited | Real estate | 2022 |
| Kc's Removal Services Ltd. | Construction | 2022 |
| KCA Deutag (Land RIG) Limited | Mining & quarrying | 2005 |
| KCA Deutag Alpha Limited | Mining & quarrying | 2007 |
| KCA Deutag Caspian Limited | Mining & quarrying | 1985 |
| KCA Deutag Drilling Group Limited | Mining & quarrying | 1972 |
| KCA Deutag Enterprises Limited | Mining & quarrying | 2008 |
| KCA European Holdings Limited | Administrative & support | 2001 |
| KCA Pubs Ltd | Hospitality | 2020 |
| Kcan CIC | Information & communication | 2025 |
| Kcat Holdings Ltd | Administrative & support | 2026 |
| Kcdw Holdings Limited | Financial services | 2024 |
| KCH Media Limited | Information & communication | 2008 |
| Kchq Ltd | Real estate | 2021 |
| KCJ (Leeds) Ltd | Health & social care | 2026 |
| KCJ Properties Ltd | Real estate | 2025 |
| KCL Utilities Limited | Construction | 2022 |
| Kclre Ltd | Other services | 2021 |
| Kcmasterinfo Ltd | Information & communication | 2022 |
| KCO7 Limited | Professional & scientific | 2022 |
| Kcoffee Kclub Ltd | Hospitality | 2025 |
| KCP III LP | | 2024 |
| KCP IX LP | | 2020 |
| KCP Viii L.P. | | 2015 |
| KCR Connect Limited | Administrative & support | 2023 |
| KCS Development Limited | Construction | 2011 |
| KCS Estates Ltd | Hospitality | 2023 |
| KCS Project Management Limited | Construction | 2011 |
| KD Asset Holdings Limited | Financial services | 2021 |
| KD Bros. Limited | Wholesale & retail | 2005 |
| KD Locums Ltd | Health & social care | 2014 |
| KD Operations Ltd | Real estate | 2024 |
| KD Property Hub Ltd | Real estate | 2024 |
| KD Protection Limited | Financial services | 2019 |
| KD Residences Ltd | Real estate | 2023 |
| KDB (Yorkshire) Limited | Professional & scientific | 2006 |
| Kddh Limited | Wholesale & retail | 2016 |
| KDI Services Limited | Transport & logistics | 2023 |
| Kdmg F.S Limited | Financial services | 2003 |
| KDR Motor Group Limited | Wholesale & retail | 2025 |
| KDS Leeds Ltd | Transport & logistics | 2011 |
| KDS Property Maintenance Ltd | Construction | 2025 |
| KDT Consultants Limited | Administrative & support | 2015 |
| KDW1 Properties Ltd | Real estate | 2026 |
| KE Group Ventures Ltd | Financial services | 2019 |
| KE Homes Limited | Real estate | 2017 |
| KE Technology Ltd | Administrative & support | 2020 |
| KEA UK Electrical Ltd | Construction | 2021 |
| Keable Investments Ltd | Financial services | 2026 |
| Keadae CIC | Administrative & support | 2024 |
| Keah Products Limited | Manufacturing | 2013 |
| Kearsley & Co GAS Services Ltd | Construction | 2026 |
| Kebe Express Ltd | Transport & logistics | 2014 |
| Keda Parts and Equipment Ltd | Administrative & support | 2013 |
| Kedo Architecture Ltd | Professional & scientific | 2012 |
| Keech Lettings Limited | Real estate | 2003 |
| Keech Limited | Financial services | 2015 |
| Keech Music Ltd | Information & communication | 2020 |
| Keech Properties Limited | Real estate | 2003 |
| Keeley Homes Ltd | Hospitality | 2025 |
| Keeley Properties Ltd | Real estate | 2025 |
| Keenan ARC Consulting Limited | Professional & scientific | 2026 |
| Keenostore Limited | Wholesale & retail | 2004 |
| Keep in Pace Ltd | Education | 2003 |
| Keep Keen Controls Holdings Limited | Financial services | 2025 |
| Keep Keen Controls Limited | Construction | 1993 |
| Keep ME Young Ltd | Wholesale & retail | 2023 |
| Keep Productive Ltd | Information & communication | 2019 |
| Keep Safe & Secure Ltd | Administrative & support | 2017 |
| Keep Streets Live Campaign Limited | Other services | 2013 |
| Keeper Box Ltd | Real estate | 2019 |
| Keepers Properties Limited | Real estate | 2010 |