| Kernow Link Ltd | Health & social care | 2026 |
| Kernow Megji Ltd | Manufacturing | 2023 |
| Kernow Merchant Services Ltd | Administrative & support | 2020 |
| Kernow Mobile Phones Limited | Wholesale & retail | 2024 |
| Kernow Old Vehicle Club Limited | Arts & recreation | 2025 |
| Kernow Padel Ltd | Arts & recreation | 2025 |
| Kernow Park Homes Limited | Hospitality | 1999 |
| Kernow Property Group Limited | Administrative & support | 2016 |
| Kernow Removers Limited | Transport & logistics | 2018 |
| Kernow Robotics Limited | Professional & scientific | 2019 |
| Kernow Smart Repairs Ltd | Wholesale & retail | 2026 |
| Kernow Sport Limited | Arts & recreation | 2019 |
| Kernow Travel Company Ltd | Administrative & support | 2019 |
| Kernow Urology Limited | Health & social care | 2019 |
| Kernow VV Limited | Wholesale & retail | 2022 |
| Kernow Yacht Services Ltd | Transport & logistics | 2014 |
| Kernowcare Ltd | Health & social care | 2020 |
| Kernowek Carpentry Ltd | Manufacturing | 2022 |
| Kernowfornia 1 Limited | Information & communication | 2022 |
| Kernowfornia 2 Limited | Information & communication | 2024 |
| Kernowpath Ltd | Health & social care | 2019 |
| Kernows Kitchen Limited | Hospitality | 2024 |
| Kernowsthesia Ltd | Health & social care | 2024 |
| Kerrier Developments Limited | Real estate | 1989 |
| Kevin Bray Ltd | Construction | 2002 |
| Kevredna Limited | Wholesale & retail | 2016 |
| KEW Vownder Management Company Limited | Households | 2014 |
| Kewa Installations Limited | Construction | 2021 |
| Keystone Ventures International Limited | Financial services | 2023 |
| Khalanna Limited | Wholesale & retail | 2021 |
| KI & Kath Pet Supplies Limited | Wholesale & retail | 2018 |
| Kieran Teague Ltd | Health & social care | 2023 |
| Killiow Coach House Management Company Limited | Professional & scientific | 1991 |
| Kimberly Park Ltd | Real estate | 2022 |
| Kimspubco Limited | Hospitality | 2010 |
| King Harry Steam Ferry Company Limited | Transport & logistics | 2001 |
| Kingfisher Developments (South West) Ltd | Construction | 2007 |
| Kings Wealth Management Ltd | Professional & scientific | 2020 |
| Kingsbury Shaw Limited | Information & communication | 1999 |
| Kingsley Developments (ST Agnes) Limited | Construction | 2025 |
| Kingsley Developments (Tolgus) Limited | Construction | 2025 |
| Kirstin Prisk Photography Ltd | Professional & scientific | 2013 |
| Kis-Met Consultants (Truro) Ltd | Administrative & support | 2020 |
| Kitchen KIT Ltd | Manufacturing | 2010 |
| Kite Associates Ltd | Professional & scientific | 2023 |
| Kitmasters Limited | Wholesale & retail | 2025 |
| KJ BRO 168 Ltd | Real estate | 2025 |
| Kjbtrading Ltd | Wholesale & retail | 2026 |
| KJS Property & Developments Ltd | Construction | 2023 |
| KJW Logistics Ltd | Wholesale & retail | 2020 |
| Klaus Ecohomes Limited | Manufacturing | 2009 |
| KM Aesthetics Newquay Ltd | Health & social care | 2018 |
| KMK Accounting Ltd | Professional & scientific | 2021 |
| Knights MPR [GB] Limited | Professional & scientific | 2019 |
| Korado Ltd | Financial services | 1999 |
| Koru Kayaking Ltd | Arts & recreation | 2012 |
| Korus Health Limited | Health & social care | 2008 |
| Kosel Construction Limited | Construction | 2025 |
| Kosmos Marketing Ltd | Wholesale & retail | 2022 |
| Kowethek Inns Ltd | Hospitality | 2021 |
| Koyo Hair Ltd | Professional & scientific | 2022 |
| KPS Lettings Ltd | Real estate | 2010 |
| KR Dance Limited | Education | 2010 |
| Kraken Property Sourcing Ltd | Administrative & support | 2025 |
| Krev Performance Strength and Conditioning Ltd | Arts & recreation | 2018 |
| Kronos Solar Projects Limited | Energy | 2013 |
| KS SPV 12 Limited | Energy | 2011 |
| KS SPV 61 Limited | Energy | 2020 |
| KS SPV 62 Limited | Energy | 2020 |
| KS SPV 63 Limited | Energy | 2020 |
| KS SPV 64 Limited | Energy | 2020 |
| KS SPV 65 Limited | Energy | 2020 |
| KS SPV 66 Limited | Energy | 2020 |
| KS SPV 67 Limited | Energy | 2020 |
| KS SPV 68 Limited | Energy | 2020 |
| KS SPV 69 Limited | Energy | 2020 |
| KS SPV 70 Limited | Energy | 2020 |
| KS SPV 71 Limited | Energy | 2021 |
| KS SPV 72 Limited | Energy | 2021 |
| KS SPV 73 Limited | Energy | 2021 |
| KS SPV 74 Limited | Energy | 2021 |
| KS SPV 75 Limited | Energy | 2021 |
| KS SPV 76 Limited | Energy | 2022 |
| KS SPV 78 Limited | Energy | 2022 |
| KS SPV 79 Limited | Energy | 2022 |
| KS SPV 80 Limited | Energy | 2022 |
| KS SPV 81 Limited | Energy | 2023 |
| KS SPV 82 Limited | Energy | 2023 |
| KS SPV 83 Limited | Energy | 2023 |
| KS SPV 84 Limited | Energy | 2023 |
| KS SPV 85 Limited | Energy | 2023 |
| KS SPV 9 Limited | Energy | 2010 |
| KST Property Limited | Construction | 2012 |
| KW Creative Design Ltd | Manufacturing | 2012 |
| KW Properties (Truro) Ltd | Real estate | 2015 |
| Kwerki Limited | Professional & scientific | 2021 |
| Kynde Community Interest Company | Education | 2020 |
| Kyndeconnect Ltd | Professional & scientific | 2025 |
| Kynder Care Ltd | Information & communication | 2025 |
| L Bull Properties Ltd | Real estate | 2017 |