| Kelvedon Lotus Ltd | Wholesale & retail | 2014 |
| Kelvins Fish Bar Ltd | Hospitality | 2026 |
| Kemce Ltd | Other services | 2026 |
| Kemet Logistics Ltd | Transport & logistics | 2024 |
| Kemma Property Limited | Real estate | 2020 |
| Kemova Healthcare Limited | Public administration | 2022 |
| Kemp & Sons Barbering Limited | Other services | 2019 |
| Kemp and Stevens Limited | Extraterritorial | 2015 |
| Kemp Moffat Ltd | Real estate | 2024 |
| Kempkap Limited | Professional & scientific | 2022 |
| Kempower Limited | Construction | 2017 |
| Kemps Recruitment Limited | Health & social care | 2023 |
| Kemsley CHP Limited | Energy | 2016 |
| KEN Burrows Holdings Limited | Financial services | 2024 |
| KEN Burrows Limited | Construction | 1964 |
| KEN Page Electrical Limited | Construction | 2011 |
| KEN Wilkins Print Limited | Manufacturing | 1984 |
| Kenaiya Limited | Wholesale & retail | 2005 |
| Kendrick Cars Ltd | Wholesale & retail | 2023 |
| Kendrick Insulation Limited | Construction | 1990 |
| Kendrick Roofing Limited | Construction | 2024 |
| Kenilworth Road (Nottingham) Freeholders Limited | Real estate | 1978 |
| Kenna Consultancy Limited | Professional & scientific | 2024 |
| Kennedy Hand Surgery Limited | Health & social care | 2025 |
| Kennedy Paver Limited | Information & communication | 2012 |
| Kenny Dunkwu Ltd | Information & communication | 2016 |
| Kenny Property Services LLP | | 2020 |
| Kens Motor Company Limited | Wholesale & retail | 1993 |
| Kensington Corp Ltd | Construction | 2023 |
| Kensington Florals Ltd | Wholesale & retail | 2026 |
| Kensington Meter Assets Ltd | Administrative & support | 2022 |
| Kensoft Business Solutions Limited | Information & communication | 2021 |
| Kent Enterprises (Nottingham) Limited | Real estate | 2023 |
| Kent Family Holdings Ltd | Financial services | 2022 |
| Kent Social Care Professionals Limited | Health & social care | 2006 |
| Kente Master Ltd | Manufacturing | 2024 |
| Kentmere Care Ltd | Real estate | 2011 |
| Kentwell Corporation Ltd | Professional & scientific | 2005 |
| Kentyne Investments Ltd | Real estate | 2021 |
| Kenvicplus Services Limited | Construction | 2025 |
| Kenviro Consulting Ltd | Professional & scientific | 2010 |
| Kenviz Ltd | Wholesale & retail | 2024 |
| Kenwood Court Management Limited | Households | 2016 |
| Keon Holdings Limited | Financial services | 2024 |
| KEP Engineering Limited | Manufacturing | 1984 |
| KEP Solutions Limited | Information & communication | 2011 |
| Keratin Pro Ltd | Wholesale & retail | 2024 |
| Kermar Mowers Ltd | Manufacturing | 2011 |
| Kern Recruitment Ltd | Administrative & support | 2026 |
| Kernel Holdco Ltd | Financial services | 2026 |
| Kernel IP01 Co Ltd | Information & communication | 2026 |
| Kernow Music School Limited | Arts & recreation | 2008 |
| Kerr Content Ltd | Information & communication | 2025 |
| Kerry & Broughton Limited | Wholesale & retail | 2010 |
| Kerry Blue Terrier Rescue | Other services | 2016 |
| Kerry Louise Interiors Limited | Professional & scientific | 2018 |
| Kerry Travel Limited | Real estate | 2023 |
| Kerry's Chippy Limited | Hospitality | 2019 |
| Kers Control & Automation Ltd | Professional & scientific | 2023 |
| Kersey Kare Ltd | Health & social care | 2022 |
| Kesari Enterprises Ltd | Real estate | 2013 |
| Keshavnil Limited | Real estate | 2022 |
| Keskan Ltd | Real estate | 2022 |
| Kesseboehmer Retail Merchandising UK Ltd. | Construction | 2004 |
| Kessel Run Management Ltd | Wholesale & retail | 2025 |
| Kesteven Decorating Services Ltd | Construction | 2013 |
| Keswick Holiday Properties Limited | Other services | 2018 |
| Keswick Jewellery Ltd | Wholesale & retail | 2020 |
| Ketan Investment Limited | Real estate | 2020 |
| Ketan Nilesh Limited | Health & social care | 2017 |
| Ketchup Marketing Limited | Professional & scientific | 2009 |
| Keten Marketing and Business Consultancy Limited | Other services | 2014 |
| Kethineni Ltd | Real estate | 2021 |
| Ketox Life Ltd | Hospitality | 2024 |
| Ketror Ltd | Construction | 2025 |
| Kettering Town VE Limited | Other services | 2012 |
| Kettle Rack Ltd | Wholesale & retail | 2022 |
| Kettle Strawson Produce Limited | Agriculture & fishing | 2021 |
| Ketton Residential Limited | Real estate | 2023 |
| Kev's Transport Ltd | Transport & logistics | 2025 |
| Kevin Bartlett Quality Kitchens Limited | Construction | 2005 |
| Kevin Hall (Nottinghamshire) Limited | Professional & scientific | 2003 |
| Kevin James (Building) Limited | Construction | 2003 |
| Kevin James Allard Limited | Administrative & support | 2023 |
| Kevin Manners Denture Clinic Limited | Health & social care | 2002 |
| Kevin Osbon Limited | Financial services | 2015 |
| Kevin Oxbury Consulting Ltd | Information & communication | 2014 |
| Kevin Platts Electrical and Plumbing Limited | Construction | 2022 |
| Kevinit Limited | Information & communication | 2023 |
| KEW Medical Limited | Real estate | 2006 |
| Kewaunee Developments Limited | Construction | 2021 |
| Kewaunee Property Limited | Real estate | 2018 |
| Key 2 Builders Ltd | Construction | 2024 |
| Key 2 Lease Limited | Administrative & support | 2017 |
| Key Aspirations Success Ltd | Professional & scientific | 2021 |
| Key Balnk Store UK Ltd | Wholesale & retail | 2025 |
| Key City Rental Ltd | Households | 2024 |
| Key Enterprise Ltd | Wholesale & retail | 2013 |
| Key Funding Solutions Limited | Professional & scientific | 2010 |
| Key Kind Investments Ltd | Real estate | 2026 |