| KBT Construction Ltd | Construction | 2023 |
| KBW Management Limited | Other services | 2005 |
| KC Machine Movers Ltd | Professional & scientific | 2020 |
| KC PVT Ltd | Real estate | 2021 |
| KC Straw Holdings Ltd | Financial services | 2025 |
| KCA Installations Ltd | Construction | 2023 |
| KCF Foods Ltd | Wholesale & retail | 2025 |
| KCL Networks Limited | Information & communication | 2017 |
| KCL Properties & Lettings Ltd | Real estate | 2025 |
| Kcmm Ltd | Professional & scientific | 2022 |
| KCP Professional Services Limited | Professional & scientific | 2024 |
| KCR Manufacturing Limited | Professional & scientific | 2003 |
| Kcrete Limited | Transport & logistics | 2019 |
| KCS Metals and Plant Ltd | Administrative & support | 2024 |
| KD Cosmetics Ltd | Wholesale & retail | 2018 |
| KD Neale Holdings Ltd | Professional & scientific | 2024 |
| KD Property Lettings Limited | Real estate | 2022 |
| KD Tamin Ltd | Health & social care | 2020 |
| KDA Management Limited | Professional & scientific | 2024 |
| KDA Web Services Limited | Information & communication | 2000 |
| KDG Distribution Ltd | Wholesale & retail | 2017 |
| KDG Property Solutions Ltd | Real estate | 2024 |
| Kdmadeit Ltd | Information & communication | 2022 |
| KDR Global Investments Limited | Construction | 2021 |
| KE YI 88 Ltd | Hospitality | 2018 |
| Kealan Nedrick Ltd | Information & communication | 2023 |
| Kean Plumbing & Heating Ltd | Construction | 2023 |
| Keangame Ltd | Wholesale & retail | 2025 |
| Keapstone Therapeutics Limited | Professional & scientific | 2017 |
| Kebab House Chesterfield Limited | Hospitality | 2025 |
| Kebabies Ltd | Hospitality | 2017 |
| Kebabish Grill and Curry House Limited | Hospitality | 2015 |
| Kebabish House Ltd | Hospitality | 2025 |
| Kebabish Lowedges Ltd | Hospitality | 2025 |
| Kebabish Original Sheff Limited | Hospitality | 2021 |
| Keel's Caff and Community Hub CIC | Hospitality | 2025 |
| Keenan Architecture Ltd | Professional & scientific | 2025 |
| Keep in Touch Ltd | Hospitality | 2025 |
| Keep IT Fifty Limited | Information & communication | 2024 |
| Keep ME UP Ltd | Households | 2020 |
| Keep on Moving Ltd | Health & social care | 2025 |
| Keeton,Sons & Co.,Limited | Transport & logistics | 1924 |
| Keetons Electrical Contractors Ltd | Construction | 2020 |
| Keezify Ltd | Wholesale & retail | 2025 |
| Keighley Furniture Project | Health & social care | 2001 |
| Keighley Property Company Limited | Financial services | 2023 |
| Keighley Takeover Ltd | Real estate | 2020 |
| Keith Mcdonald Wray Ltd | Extraterritorial | 2025 |
| Keith Snow Consulting Ltd | Professional & scientific | 2024 |
| Kejam Limited | Professional & scientific | 2005 |
| Kel-Lets Limited | Real estate | 2015 |
| Keldeo Elite Limited | Wholesale & retail | 2025 |
| Kelectric Spark Ltd | Construction | 2026 |
| Kelevrakuro Ltd | Information & communication | 2021 |
| Kelham Arcade Limited | Real estate | 2016 |
| Kelham Barber - Leah's Yard Ltd | Other services | 2024 |
| Kelham Barber Limited | Other services | 2022 |
| Kelham Bazaar Ltd | Wholesale & retail | 2025 |
| Kelham Cleaning Ltd | Administrative & support | 2024 |
| Kelham Concept Ltd | Professional & scientific | 2019 |
| Kelham Counselling, Wellbeing & Psychotherapy Limited | Health & social care | 2026 |
| Kelham Estates Limited | Real estate | 2012 |
| Kelham Gate Management Company Limited | Extraterritorial | 2020 |
| Kelham Heights Limited | Real estate | 2025 |
| Kelham House Estates (Residential) Limited | Real estate | 2015 |
| Kelham Invest Ltd | Real estate | 2020 |
| Kelham Island Arts Collective Limited | Arts & recreation | 2013 |
| Kelham Island Concrete Limited | Manufacturing | 2017 |
| Kelham Island Express Ltd | Wholesale & retail | 2018 |
| Kelham Island Ltd | Hospitality | 2019 |
| Kelham Island Pizza Limited | Hospitality | 2017 |
| Kelham Island Property Ltd | Real estate | 2013 |
| Kelham Legal Ltd | Professional & scientific | 2026 |
| Kelham News Limited | Wholesale & retail | 2022 |
| Kelham One Limited | Hospitality | 2026 |
| Kelham Print Limited | Wholesale & retail | 2019 |
| Kelham Property Investments Limited | Real estate | 2015 |
| Kelham Riverside Management Company Limited | Real estate | 2007 |
| Kelham Square Limited | Real estate | 2009 |
| Kelham Studio Ltd | Information & communication | 2023 |
| Kell Brook Sports Ltd | Arts & recreation | 2010 |
| Kelldynasty Ltd | Manufacturing | 2026 |
| Kelleher Film Limited | Information & communication | 2023 |
| Kelley and Sons Limited | Administrative & support | 2021 |
| Kelli Young Limited | Arts & recreation | 2026 |
| Kellis Group Limited | Administrative & support | 2002 |
| Kelly Civil Engineering Ltd | Construction | 2025 |
| Kelly J'S Ltd | Administrative & support | 2019 |
| Kelly Robson Coaching and Consultancy Ltd | Health & social care | 2025 |
| Kellygardner@White Lion Limited | Administrative & support | 2025 |
| Kelpack Limited | Manufacturing | 2018 |
| Kelsey Construction Limited | Construction | 2020 |
| Kelty Surgery Limited | Health & social care | 2013 |
| Kelu Sky Bar Ltd | Hospitality | 2022 |
| Kelvin Apartment Ltd | Real estate | 2019 |
| Kelwick Engineering (GKE) Ltd | Professional & scientific | 2011 |
| Kelwick Technical Services Ltd | Information & communication | 2018 |
| KEM Events Limited | Administrative & support | 2002 |
| Kem&Hus Enterprise Ltd | Administrative & support | 2017 |
| Kemi Freedom Ltd | Health & social care | 2023 |