| K & S (560) Limited | Administrative & support | 2005 |
| K & S Dog House Ltd | Agriculture & fishing | 2024 |
| K & S Installations (Staffs) Limited | Construction | 2019 |
| K 2 Foods Ltd | Wholesale & retail | 2019 |
| K a Fabrications & Installations Limited | Manufacturing | 1983 |
| K and B Properties Ltd | Hospitality | 2025 |
| K Apostolou Healthcare Services Limited | Health & social care | 2022 |
| K J B Groundworks Ltd | Construction | 2011 |
| K Kudrycki Ltd | Transport & logistics | 2015 |
| K L Hancock Ltd | Health & social care | 2022 |
| K M C I Limited | Manufacturing | 2000 |
| K N Services Staffordshire Limited | Construction | 2013 |
| K R Latham Limited | Wholesale & retail | 2017 |
| K S Plasterers and Property Maintenance Limited | Construction | 2013 |
| K S Sandhu Ltd | Wholesale & retail | 2026 |
| K Sarin Estates Limited | Real estate | 2014 |
| K Takeaway Stoke Ltd | Hospitality | 2025 |
| K Wheawall Limited | Transport & logistics | 2018 |
| K&J Tavern Ltd | Hospitality | 2026 |
| K&R Accountants Ltd | Professional & scientific | 2014 |
| K&R Financial Solutions Ltd | Extraterritorial | 2017 |
| K&S Malik Investments Ltd | Financial services | 2024 |
| K&S Malik Properties Ltd | Real estate | 2023 |
| K&Sp Developments Limited | Real estate | 2025 |
| K&V Associates Ltd | Health & social care | 2023 |
| K&V Chinese Grocery Limited | Wholesale & retail | 2007 |
| K-Crown Solutions Ltd | Transport & logistics | 2026 |
| K.C. Building Services Ltd | Construction | 2005 |
| K.Dee.K.Danceworks Limited | Arts & recreation | 2013 |
| K.E.J.J.J Ltd | Health & social care | 2024 |
| K.M Aesthetics and Laser Ltd | Other services | 2025 |
| K.O. Shows Ltd | Arts & recreation | 2022 |
| K.P. Weston (Embalming Services) Ltd | Other services | 2011 |
| K.S Builders Limited | Construction | 2010 |
| K.S.A Logistical Services Ltd | Transport & logistics | 2026 |
| K15 Developments Limited | Real estate | 2025 |
| K19 Community CIC | Arts & recreation | 2026 |
| K2 Hair, Beauty & Sunbed Centre Ltd | Other services | 2005 |
| K2 Windows & Doors (UK) Limited | Construction | 2014 |
| K9 PAW Security Ltd | Administrative & support | 2024 |
| Kaafkart Ltd | Wholesale & retail | 2026 |
| Kabizza on Trent Ltd | Hospitality | 2026 |
| Kabul House Ltd | Hospitality | 2023 |
| Kaczmar Properties Ltd | Real estate | 2011 |
| Kadama Limited | Wholesale & retail | 2017 |
| Kadree Properties Limited | Real estate | 2025 |
| Kaga Homes Limited | Construction | 2024 |
| Kaian Branco DE Miranda Ltd | Wholesale & retail | 2025 |
| Kainn Limited | Manufacturing | 2011 |
| Kaizen Connected Limited | Professional & scientific | 2022 |
| Kaizen Marketing Ltd | Professional & scientific | 2024 |
| Kaizen Property Group Limited | Real estate | 2016 |
| Kajenthiran Property Services Ltd | Real estate | 2025 |
| Kajul Limited | Professional & scientific | 2003 |
| Kaleem Group Limited | Financial services | 2025 |
| Kalhara Ltd | Wholesale & retail | 2024 |
| Kaloo Ltd | Extraterritorial | 2024 |
| Kalsi Ventures Ltd | Real estate | 2026 |
| Kalsoom BI & Co Ltd | Financial services | 2026 |
| Kalyal Travel Ltd | Transport & logistics | 2018 |
| KAM Yuen Ltd | Hospitality | 2021 |
| Kama Tech Ltd | Professional & scientific | 2014 |
| Kamana Ltd | Health & social care | 2023 |
| Kameleon Coatings Limited | Wholesale & retail | 2013 |
| Kamg Ltd | Transport & logistics | 2019 |
| Kamkoz Limited | Administrative & support | 2024 |
| Kamm Composites Ltd | Manufacturing | 2025 |
| Kamm Group Limited | Financial services | 2020 |
| Kamm Projects Ltd | Manufacturing | 2013 |
| Kande International Ltd | Professional & scientific | 2002 |
| Kanection Limited | Wholesale & retail | 1999 |
| Kanesan Ltd | Real estate | 2025 |
| Kaneshawfitness Ltd | Extraterritorial | 2024 |
| Kangaroo Homes Ltd | Real estate | 2023 |
| Kannan Doctors Limited | Health & social care | 2012 |
| Kanto Card Corner Limited | Wholesale & retail | 2025 |
| Kaolin Limited | Manufacturing | 2026 |
| Kara Food Ltd | Hospitality | 2023 |
| Karaas Ltd | Real estate | 2024 |
| Karah Ltd | Wholesale & retail | 2016 |
| Karah Properties Ltd | Real estate | 2020 |
| Karahi Master (SOT) Ltd | Hospitality | 2025 |
| Karen Haycock Limited | Professional & scientific | 2024 |
| Karerisk Ltd | Construction | 2013 |
| Kart Electrical Solutions Ltd | Construction | 2014 |
| Kart Holdings Limited | Financial services | 2015 |
| Kart Industrial Doors Limited | Manufacturing | 2015 |
| Karwan-E-Mustafa Limited | Administrative & support | 2025 |
| Kasamy Limited | Hospitality | 2022 |
| Kasanda's Handcrafted Ltd | Arts & recreation | 2018 |
| Kasch OIL and GAS Consultants Ltd | Mining & quarrying | 2010 |
| Kashmir Gardens (Stoke) Limited | Hospitality | 2023 |
| Kass Kebab Limited | Hospitality | 2020 |
| Katanga Ltd | Transport & logistics | 2026 |
| Kate Davison Equine Ltd | Professional & scientific | 2025 |
| Katie JAY Slater Hairdressing Limited | Other services | 2019 |
| Katovelle Ltd | Wholesale & retail | 2025 |
| Katsura Consulting Limited | Professional & scientific | 2013 |
| Kaundalproperties Limited | Real estate | 2024 |
| KAW Autos Limited | Wholesale & retail | 2004 |