| Kings Church Centre Facilities Norwich Limited | Administrative & support | 2010 |
| Kings Church Centre Norwich | Other services | 2000 |
| Kings Consulting Ltd | Professional & scientific | 2024 |
| Kings Electrical & Maintenance Ltd | Other services | 2016 |
| Kings Head Hotel Limited | Hospitality | 2020 |
| Kings Head Sporting Club Limited | Hospitality | 1976 |
| Kings Hill Podiatry Limited | Health & social care | 2021 |
| Kings Opticians Ltd | Wholesale & retail | 2023 |
| Kingsbury Midlands Limited | Hospitality | 2014 |
| Kingsley Associates Ltd | Professional & scientific | 2024 |
| Kingsley Holdings Limited | Professional & scientific | 2009 |
| Kingsley Medical Ltd | Health & social care | 2025 |
| Kingston Motor Parts Ltd | Wholesale & retail | 2026 |
| Kingston Study Centre Ltd | Hospitality | 2009 |
| Kingstons Trading Limited | Financial services | 2024 |
| Kingswinford Takeaway Limited | Hospitality | 2021 |
| Kingswood Property Solutions Limited | Construction | 2011 |
| Kinky Kitty Ltd | Wholesale & retail | 2025 |
| Kinnaird Food Ltd | Manufacturing | 2010 |
| Kinnovate Limited | Administrative & support | 2016 |
| Kinseloyin Ltd | Health & social care | 2023 |
| Kinsley Capital Ltd | Financial services | 2023 |
| Kinson Group Limited | Health & social care | 2024 |
| Kintronix Ltd | Information & communication | 2017 |
| Kiobs UK Ltd | Administrative & support | 2011 |
| Kippax Design Ltd | Financial services | 2013 |
| Kippax Ishere Ltd | Construction | 2013 |
| Kiraman Ltd | Real estate | 2020 |
| Kiran Chauhan & Co Ltd | Professional & scientific | 2018 |
| Kirby & Haslam Ltd | Professional & scientific | 2021 |
| Kirby Offshore Ltd | Professional & scientific | 2025 |
| Kirby's Auto Centre Ltd | Wholesale & retail | 2006 |
| Kirklands Limited | Wholesale & retail | 1959 |
| Kirkleatham Memorial Limited | Other services | 2012 |
| Kirkley Court Management Company Limited | Households | 1996 |
| Kirkley Pharmacy Limited | Wholesale & retail | 2007 |
| Kirsten's Catering Ltd | Hospitality | 2019 |
| Kirsten's Property Management Limited | Administrative & support | 2024 |
| KIS85 Limited | Transport & logistics | 2017 |
| Kisber Marketing Limited | Wholesale & retail | 2016 |
| Kissinger Property Management Limited | Real estate | 2004 |
| KIT Martin (Historic Houses Rescue) Limited | Construction | 1974 |
| Kit-Factory Ltd | Wholesale & retail | 2017 |
| Kitchen and Bedroom Workshop Limited | Wholesale & retail | 1994 |
| Kitchen Fronts of Norfolk Ltd | Construction | 2011 |
| Kitchen POP UPS Ltd | Wholesale & retail | 2025 |
| Kitchens Bedrooms Carpentry Installations Limited | Construction | 2019 |
| Kitchens by Design (Norfolk) Limited | Construction | 2004 |
| Kitchens, Bathrooms & Wetrooms by Design Ltd | Construction | 2024 |
| Kitfix Swallow Group Limited | Financial services | 2016 |
| Kitt Events Ltd | Professional & scientific | 2019 |
| Kitted Essentials Ltd | Wholesale & retail | 2025 |
| Kittees Limited | Wholesale & retail | 2023 |
| Kivu Kitendi Ltd | Other services | 2018 |
| Kiwipak Innovations Limited | Administrative & support | 2026 |
| KJ Fencing Ltd | Administrative & support | 2022 |
| KJ Fitness Ltd | Health & social care | 2017 |
| KJN Decorating Ltd | Construction | 2021 |
| KJS Imaging Limited | Health & social care | 2026 |
| KK Roofline Ltd | Construction | 2024 |
| KKD Finance Ltd | Financial services | 2009 |
| Kkjr Management Ltd | Administrative & support | 2025 |
| KKL Fabrications Limited | Manufacturing | 2011 |
| KKS Contractors-Uk Limited | Professional & scientific | 2019 |
| KL Cycles Ltd | Wholesale & retail | 2024 |
| Klair House Ltd | Health & social care | 2003 |
| Klar Homes Ltd | Administrative & support | 2026 |
| Klara Hawes Ltd | Professional & scientific | 2021 |
| Klarity Medical Writing Ltd | Professional & scientific | 2011 |
| KLB Electrical Ltd | Construction | 2020 |
| Klear Labs Ltd | Manufacturing | 2019 |
| Kleio Audio Limited | Manufacturing | 2012 |
| Kleva Links Ltd | Information & communication | 2024 |
| KLJ Investments | Financial services | 2017 |
| KLM UK Engineering Limited | Transport & logistics | 1990 |
| Klodjan- Olive Pizzeria Ltd | Hospitality | 2019 |
| Klusterdot Intelligent Solutions Ltd | Professional & scientific | 2018 |
| Klyne Air Limited | Transport & logistics | 2007 |
| Klyne Aviation (Holdings) Limited | Professional & scientific | 2013 |
| Klyne Aviation Limited | Transport & logistics | 2008 |
| Klyne Training Limited | Education | 2025 |
| KM Industrial Products Limited | Manufacturing | 2003 |
| KMB Psychology Ltd | Health & social care | 2023 |
| Kmbs Accounts Limited | Professional & scientific | 2014 |
| KMC Tyres (Norfolk) Limited | Real estate | 2018 |
| KMC4 Limited | Professional & scientific | 2025 |
| KMD Trading Limited | Wholesale & retail | 2022 |
| Kmeg UK Ltd | Real estate | 2019 |
| KMH Business Ltd | Administrative & support | 2018 |
| KMI Logistics Limited | Transport & logistics | 2016 |
| Kmla Ltd | Financial services | 2019 |
| KMP Sales Ltd | Wholesale & retail | 2026 |
| Kmpdyy Ltd | Transport & logistics | 2025 |
| KMR Private Hire Ltd | Transport & logistics | 2026 |
| Kmrmotorsport Ltd | Wholesale & retail | 2008 |
| KMS Contractors Limited | Construction | 2016 |
| KN Dental & Aesthetics Limited | Health & social care | 2023 |
| KNG Multi Services Limited | Health & social care | 2016 |
| Knight Construction and Developments Limited | Construction | 2025 |
| Knight Property (Norfolk) Ltd | Real estate | 2026 |