| Kernella Court Management Company Limited | Households | 1983 |
| Kerry's Cleaning Company Ltd | Administrative & support | 2020 |
| Kerstar (UK) Limited | Manufacturing | 2006 |
| Keser Food Ltd | Hospitality | 2026 |
| Kesten Ltd | Other services | 2024 |
| Keswick Hotel Developments Ltd | Construction | 2026 |
| Keswick Lease Developments Ltd | Construction | 2024 |
| Ketley MOT Station Limited | Wholesale & retail | 2017 |
| Ketley News and Booze Ltd | Wholesale & retail | 2021 |
| Ketley Town Convenience Store Ltd. | Wholesale & retail | 2017 |
| KEV Autos Ltd | Wholesale & retail | 2020 |
| Kevety Ventures Ltd | Real estate | 2023 |
| Kevin G James Limited | Wholesale & retail | 2012 |
| KEW Accountants & Tax Specialists Limited | Professional & scientific | 2014 |
| Key 360 (Property Solutions) Ltd | Real estate | 2020 |
| Key Consumables Limited | Other services | 2011 |
| Key Estates Shropshire Ltd | Real estate | 2022 |
| Key Homes (Shropshire) Ltd | Real estate | 2018 |
| Key Stores Limited | Wholesale & retail | 2006 |
| Keycap Care & Catering Ltd Ltd | Health & social care | 2023 |
| Keys Industrial Estate Management Ltd | Real estate | 2026 |
| Keysforpeaceautolocksmith Ltd | Wholesale & retail | 2026 |
| Keystone Development Homes Ltd | Real estate | 2022 |
| Keystone Development Shawbury Limited | Real estate | 2023 |
| Keystone Property Group Limited | Households | 2025 |
| Kg&P Limited | Transport & logistics | 2025 |
| KH Traderz Limited | Other services | 2017 |
| Khan Property Investments Ltd | Real estate | 2018 |
| Khan Securities Ltd | Real estate | 2020 |
| Khimki Ltd | Other services | 2019 |
| Kickass Endurance Limited | Arts & recreation | 2014 |
| Kiddos Kingdom Limited | Education | 2025 |
| Kidz in Sport (Shropshire) Ltd | Administrative & support | 2009 |
| Kiki Link Limited | Wholesale & retail | 2025 |
| Kilimanjaro Mavens Treks & Safaris Ltd | Administrative & support | 2025 |
| Kilkee Limited | Wholesale & retail | 2025 |
| KIM Goode VA Services Ltd | Administrative & support | 2024 |
| KIN Collective Wellbeing CIC | Education | 2024 |
| Kinch's Coffee Bar & Bistro Ltd | Hospitality | 2024 |
| Kindercare Solutions Ltd | Professional & scientific | 2026 |
| Kindridge Books Ltd | Information & communication | 2024 |
| Kingdom Buzz Ltd | Wholesale & retail | 2024 |
| Kingdom Hands Ltd | Administrative & support | 2024 |
| Kingfisher Lighting Limited | Extraterritorial | 1988 |
| Kingkit Limited | Wholesale & retail | 2016 |
| Kings Court RTM Company Limited | Households | 2007 |
| Kings Junction Limited | Real estate | 2003 |
| Kingscote Limited | Construction | 1997 |
| Kingsland Homes Limited | Construction | 2019 |
| Kingsland Property Group Ltd | Construction | 2017 |
| Kink Knowledge Academy Ltd | Education | 2025 |
| Kirsty's Touch Ltd | Administrative & support | 2025 |
| Kirsty-Marie Ltd | Health & social care | 2020 |
| KIS Sourcing Limited | Real estate | 2020 |
| Kisvarda Ltd | Other services | 2020 |
| Kitchen at Eden Ltd | Hospitality | 2026 |
| Kitchen Fitting Specialists Limited | Construction | 2004 |
| Kitchens by Design (West Midlands) Ltd | Manufacturing | 2017 |
| Kiyokuni Europe Limited | Manufacturing | 1987 |
| KJ Sea Ltd | Financial services | 2024 |
| KJ Watkins Ltd | Other services | 2025 |
| KJD Developments Ltd | Construction | 2016 |
| KJR Heating Services Limited | Construction | 2025 |
| KK Cakes Ltd | Wholesale & retail | 2022 |
| KK Capital Estates Ltd | Hospitality | 2025 |
| KK Plus Retail Ltd | Wholesale & retail | 2026 |
| Kkbassi Consultancy Ltd | Information & communication | 2018 |
| Kkbassi Investments Limited | Financial services | 2020 |
| Kkbassi Property Lettings Limited | Real estate | 2022 |
| KKG 2 Limited | Other services | 2011 |
| Kleinco Ltd | Manufacturing | 2020 |
| KLF Hair & Co Ltd | Other services | 2001 |
| Klip Media Ltd | Information & communication | 2023 |
| Klippie Contracting Ltd | Administrative & support | 2025 |
| KLS Ironing & Cleaning Service Limited | Administrative & support | 2021 |
| KM Bailey Limited | Construction | 1997 |
| KMM Projects Limited | Professional & scientific | 2017 |
| KNG Contractors Ltd | Construction | 2018 |
| Knight and Day Logistics Limited | Transport & logistics | 2018 |
| KNL Groundworks Ltd | Construction | 2026 |
| Knowles Benning LLP | | 2008 |
| KNS Spedition Ltd | Transport & logistics | 2017 |
| Kobe Solutions Ltd | Information & communication | 2020 |
| Kohjenta Limited | Agriculture & fishing | 2006 |
| Kojikojo Limited | Information & communication | 2024 |
| Kokoro Events Ltd | Arts & recreation | 2020 |
| Komplex Care Limited | Health & social care | 2019 |
| Komplex Case Management Ltd | Health & social care | 2024 |
| Komplex Direct Ltd | Financial services | 2020 |
| Komplex Group Ltd | Health & social care | 2018 |
| Kontrive Ltd | Construction | 2024 |
| Koper Ltd | Administrative & support | 2020 |
| Kornhill Consultancy Limited | Information & communication | 2016 |
| Kortus Ltd | Other services | 2018 |
| Kosecost Ltd | Other services | 2019 |
| Kovahq Ltd | Administrative & support | 2015 |
| KPA Recruitment Ltd | Administrative & support | 2017 |
| KR Energy Services UK Ltd | Construction | 2019 |
| Kramba Associates Ltd | Other services | 2005 |
| Krien Ltd | Wholesale & retail | 2019 |