| JSW Investments Limited | Financial services | 2016 |
| JSY Engineers Ltd | Construction | 2021 |
| JT Bannister Property Services Ltd | Real estate | 2026 |
| JTA Kinetic Ltd | Financial services | 2023 |
| JTR Consultants Limited | Professional & scientific | 2019 |
| JTS Welding Services Ltd | Professional & scientific | 2025 |
| Juice Creative (Staffs) Limited | Wholesale & retail | 2011 |
| Julieaharris Consulting Limited | Professional & scientific | 2026 |
| Jumparty Limited | Arts & recreation | 2014 |
| Junction 15 Limited | Information & communication | 2012 |
| Junction 16 Cars Limited | Wholesale & retail | 2025 |
| Junk Angel Limited | Water & waste | 2024 |
| Just Consult Limited | Professional & scientific | 2017 |
| Just Iron Limited | Other services | 2024 |
| Just Scales Ltd | Wholesale & retail | 2024 |
| Just the Business (2018) Limited | Information & communication | 2018 |
| Justice Prince Community Interest Company | Education | 2007 |
| Justquoteme Ltd | Financial services | 2011 |
| Jvjw Lettings Ltd | Hospitality | 2023 |
| JW Peony Limited | Hospitality | 2022 |
| Jwjj Ltd | Transport & logistics | 2025 |
| JXA Management Ltd | Professional & scientific | 2025 |
| JXN Living Ltd | Real estate | 2026 |
| K & a Properties Midlands Limited | Construction | 2020 |
| K & K Flooring (Newcastle) Ltd | Construction | 2003 |
| K J Harte Ltd | Construction | 2017 |
| K J Lines Limited | Construction | 1999 |
| K Scott Construction Limited | Construction | 2015 |
| K Wysocki Ltd | Wholesale & retail | 2025 |
| K&K Vista Ltd | Professional & scientific | 2025 |
| K&S N W Limited | Hospitality | 2015 |
| K&S Pranzo Ltd | Hospitality | 2018 |
| K1NGS Roofing Ltd | Construction | 2018 |
| K2C (KARTS2CARS) Ltd | Arts & recreation | 2024 |
| Kabana Club Ltd | Manufacturing | 2019 |
| KAG Recruitment Consultancy Ltd | Administrative & support | 2017 |
| KAG Training Consultancy Ltd | Professional & scientific | 2025 |
| Kairos Enterprises | Wholesale & retail | 2013 |
| Kaizen Aiseo Limited | Information & communication | 2026 |
| Kalaard Ltd | Wholesale & retail | 2014 |
| Kallara Medicals Limited | Health & social care | 2014 |
| KAM Retailing Ltd | Wholesale & retail | 2013 |
| Kano Precision Engineering Ltd | Manufacturing | 2023 |
| KAR Bodyshop Ltd | Wholesale & retail | 2018 |
| Karapinar Property Investment Ltd | Real estate | 2025 |
| Karci & Dinger Limited | Real estate | 2025 |
| Karen Page Ltd | Other services | 2024 |
| Karl Ruddle Architects Ltd | Professional & scientific | 2017 |
| Karl Snape Tiling Ltd | Construction | 2015 |
| Karla's Personalised Bracelets and Jewellery Ltd | Manufacturing | 2025 |
| Kate Platt Designs Limited | Professional & scientific | 2022 |
| Kavaken Limited | Information & communication | 2023 |
| Kavala Properties Ltd | Households | 2025 |
| KAY3 Limited | Health & social care | 2022 |
| Kaynat Property Lettings Ltd | Real estate | 2024 |
| KB Accountancy & Bookkeeping Services Limited | Professional & scientific | 2003 |
| KB Chinomso Limited | Health & social care | 2021 |
| KBG Construction Ltd | Construction | 2026 |
| KC Cabins Solutions Ltd | Construction | 2015 |
| KC Investment Holdings Ltd | Financial services | 2024 |
| KCM Properties Group Limited | Real estate | 2026 |
| KD Holmes Services Ltd | Construction | 2017 |
| KE Fashion Limited | Wholesale & retail | 2022 |
| Keble Heath Construction Limited | Construction | 1974 |
| Keel Point Management Limited | Households | 2004 |
| Keele Estates Limited | Financial services | 2014 |
| Keele Residences Limited | Real estate | 2019 |
| Keele Student Houses Limited | Extraterritorial | 2015 |
| Keele Student Properties Limited | Real estate | 2024 |
| Keele SU Trading Limited | Other services | 2018 |
| Keele University Science and Business Park Limited | Administrative & support | 2004 |
| Keemon Ltd | Wholesale & retail | 2025 |
| Keep IT Simple Accounts Limited | Professional & scientific | 2021 |
| Keith Hartshorn Limited | Construction | 2003 |
| Kelbourne Property Limited | Construction | 2014 |
| Keltomo Ltd | Transport & logistics | 2025 |
| KEN SNR Limited | Professional & scientific | 2026 |
| Kendal House Ltd | Health & social care | 2016 |
| Kendrick Legal Limited | Professional & scientific | 2021 |
| Kens Roofing & Building Services Ltd | Construction | 2021 |
| Kent Amusements Limited | Arts & recreation | 2022 |
| Kenz Medi Serve Limited | Health & social care | 2015 |
| Keown Nugent Solicitors Ltd | Professional & scientific | 2018 |
| Kerol Hardware Limited | Wholesale & retail | 2013 |
| Kerol Trading Limited | Wholesale & retail | 2004 |
| Kervan Pizza Ltd | Hospitality | 2017 |
| Kevin J Richardson Consulting Limited | Professional & scientific | 2024 |
| Key View Property Group Ltd | Real estate | 2025 |
| Khan Auto Repair Ltd | Wholesale & retail | 2025 |
| Khan's Law Firm Limited | Professional & scientific | 2009 |
| KHG Security Limited | Construction | 2003 |
| Khushi Product Ltd | Wholesale & retail | 2022 |
| Khyber Medical Ltd | Health & social care | 2025 |
| Khyber Property Ltd | Real estate | 2025 |
| Kiaka Ltd | Hospitality | 2024 |
| Kian Group Limited | Wholesale & retail | 2024 |
| Kilimo Limited | Other services | 2008 |
| Kilkeel Eats Ltd | Hospitality | 2023 |
| Kilmegan Lane Management Company Ltd | Households | 2006 |
| Kilmore Design Ltd | Manufacturing | 2015 |