| KC Hair Academy Ltd | Other services | 2022 |
| KC Hair Ltd | Other services | 2021 |
| KC Modular Solutions Ltd | Construction | 2025 |
| KC Power Solutions Limited | Construction | 2023 |
| KCA Accounts Ltd | Professional & scientific | 2024 |
| KCJ Haulage Ltd | Transport & logistics | 2014 |
| Kcjsmithies Ltd | Professional & scientific | 2022 |
| KCN Building Services Limited | Construction | 2007 |
| Kcompany Ltd | Construction | 2014 |
| KCP Private Limited | Real estate | 2025 |
| KCR Property Developments Ltd | Real estate | 2024 |
| KCS Estates Inc Ltd | Real estate | 2025 |
| KCS Roofing Specialists Ltd | Construction | 2023 |
| KCS Technology Limited | Information & communication | 2023 |
| KD (BA) Limited | Other services | 2017 |
| KD Additions Heating & Plumbing Limited | Construction | 2024 |
| KD Consult Limited | Transport & logistics | 2021 |
| KD KBB Ltd | Other services | 2025 |
| KDA Healthcare Limited | Health & social care | 2019 |
| Kdcleanpro Limited | Administrative & support | 2026 |
| KDJ Systems Ltd | Information & communication | 2025 |
| Kdoc Ltd | Professional & scientific | 2023 |
| KDS Interiors Ltd | Construction | 2021 |
| KDW Auto Solutions Ltd | Wholesale & retail | 2019 |
| Kealytech Ltd | Information & communication | 2023 |
| Kean Holdings Limited | Real estate | 2003 |
| Kean Street Productions Ltd | Arts & recreation | 2022 |
| Kearney Accounting and Consultancy Services Ltd | Professional & scientific | 2014 |
| Keary Contractors Limited | Construction | 2006 |
| Keast Consulting Limited | Professional & scientific | 2013 |
| Keay Holdings Ltd | Real estate | 2020 |
| Keba Keba Limited | Construction | 2014 |
| Kebba Bojang Care Services Limited | Health & social care | 2020 |
| Kebbi Electrical Services Ltd | Manufacturing | 2022 |
| Kebel Limited | Hospitality | 2024 |
| Keble Communications UK Ltd | Information & communication | 2025 |
| Kech Ltd | Wholesale & retail | 2019 |
| Kech Property & Management Ltd | Real estate | 2022 |
| Kechi Consulting Limited | Administrative & support | 2018 |
| Kedola Holdings Limited | Financial services | 2025 |
| Kedu Testing Ltd. | Information & communication | 2012 |
| Kedward Properties Ltd | Real estate | 2021 |
| Keedwell Properties LLP | | 2025 |
| Keegan-Phipps Surveying Ltd | Professional & scientific | 2024 |
| Keeley Truck Services Ltd | Manufacturing | 2018 |
| Keeling Legal Limited | Professional & scientific | 2015 |
| Keem Care Ltd | Health & social care | 2020 |
| Keen Klean Ltd | Administrative & support | 2026 |
| Keenamon Limited | Real estate | 2005 |
| Keenan Property Solutions Ltd | Real estate | 2020 |
| Keenan Systems Engineering Solutions Ltd | Information & communication | 2022 |
| Keene & Baytree Management Company Ltd | Households | 2023 |
| Keenvenus Limited | Households | 1979 |
| Keep IT Clean Bristol Ltd | Administrative & support | 2022 |
| Keep IT Personal Ltd | Wholesale & retail | 2010 |
| Keep My Home Safe Limited | Administrative & support | 2024 |
| Keepers of Light Ltd | Financial services | 2025 |
| Keeping's Maintenance Ltd | Manufacturing | 2020 |
| Keepsake Digital Ltd | Wholesale & retail | 2026 |
| Keepstone Ltd | Construction | 2020 |
| Kefcom Limited | Information & communication | 2022 |
| Kefi Greek Dining Ltd | Manufacturing | 2025 |
| Keir Roofing Ltd | Construction | 2020 |
| Keith Bates Development Ltd | Administrative & support | 2011 |
| Keith Ferris Limited | Health & social care | 1996 |
| Keith James Physiotherapy Ltd | Education | 2025 |
| Keith Pople Limited | Real estate | 1951 |
| Keith Properties Ltd | Real estate | 2023 |
| Keith's School of Motoring Ltd | Administrative & support | 2005 |
| Keithco Limited | Hospitality | 1998 |
| Keiths PHC Limited | Construction | 2021 |
| KEJ Properties Limited | Real estate | 2022 |
| Keja Ltd | Health & social care | 2014 |
| Kelcey and Hall Limited | Professional & scientific | 2018 |
| Kelico Limited | Real estate | 1988 |
| Kellas & Co Property Ltd | Construction | 2026 |
| Kellaway (Bristol) Limited | Real estate | 1987 |
| Kellaway 2 Fish Bar Limited | Hospitality | 2024 |
| Kellaway Building Supplies Limited | Wholesale & retail | 1987 |
| Kellaway Court Limited | Real estate | 1976 |
| Kellaway Hire Services Limited | Wholesale & retail | 2009 |
| Kellaway Investments Limited | Real estate | 1963 |
| Kellaway Motorcycles Limited | Wholesale & retail | 2007 |
| Kellaway Premier Store Ltd | Wholesale & retail | 2020 |
| Keller Accountancy Services Limited | Professional & scientific | 2001 |
| Kellie Hopley Design Ltd | Information & communication | 2021 |
| Kellie Moody Hair & Makeup Ltd | Other services | 2025 |
| Kelloway Electrical Limited | Construction | 2012 |
| Kelly Farm Consulting Limited | Professional & scientific | 2015 |
| Kelly Industries Limited | Manufacturing | 2024 |
| Kelly Robin Ltd | Information & communication | 2012 |
| Kelly Sardo Limited | Professional & scientific | 2014 |
| Kelly Scott Art Ltd | Professional & scientific | 2024 |
| Kelly Ville Analytics Ltd | Information & communication | 2025 |
| Kelly's Animal Naturals Ltd | Wholesale & retail | 2024 |
| Kelly's Butchery Ltd | Manufacturing | 2025 |
| Kelp Industries Ltd | Professional & scientific | 2020 |
| Kelrise Property Investments Limited | Real estate | 2022 |
| Kelsen Law Limited | Professional & scientific | 2018 |
| Kelso Enterprise Ltd | Wholesale & retail | 2015 |