| Kilo Electrical Limited | Construction | 2012 |
| Kilowatt Electrical Contractors Ltd | Construction | 2025 |
| Kilroy Travels UK Limited | Administrative & support | 2022 |
| KIM PMU Nails and Spa Limited | Other services | 2024 |
| Kim's Cafe Limited | Hospitality | 2019 |
| Kimba Digital Ltd | Professional & scientific | 2019 |
| Kimber Acoustics Ltd | Professional & scientific | 2013 |
| Kimberley Bailey Ltd | Professional & scientific | 2016 |
| Kimberley Court Management Company Limited | Real estate | 1975 |
| Kimera Facilities Management UK Limited | Administrative & support | 2009 |
| Kimera Investments Limited | Financial services | 2021 |
| Kimera Properties Limited | Real estate | 2019 |
| Kimmy Nails Limited | Other services | 2023 |
| Kimo Limited | Health & social care | 2018 |
| Kimono Ltd | Professional & scientific | 2020 |
| Kims K9 Ltd | Other services | 2015 |
| KIN Creative Studio Ltd | Professional & scientific | 2025 |
| KIN Health Care Limited | Health & social care | 2015 |
| KIN House Limited | Hospitality | 2021 |
| Kinara Living Group Limited | Hospitality | 2026 |
| Kinaxis UK Limited | Information & communication | 2018 |
| Kind AI Limited | Information & communication | 2021 |
| Kind Education Ltd | Administrative & support | 2025 |
| Kind Food Group Ltd | Manufacturing | 2022 |
| Kind to Animals Ltd | Wholesale & retail | 2023 |
| Kindklaw Ltd | Extraterritorial | 2025 |
| Kindling Transformative Interventions Limited | Professional & scientific | 2021 |
| Kindly Safe Ltd | Administrative & support | 2020 |
| Kindlycare Ltd | Health & social care | 2022 |
| Kindoftech Ltd | Information & communication | 2020 |
| Kindom Events Ltd | Arts & recreation | 2026 |
| Kindred Learning Limited | Information & communication | 2016 |
| Kindred Property Ltd | Real estate | 2016 |
| Kindred Skin Aesthetics Ltd | Health & social care | 2015 |
| Kindred: Trails & Trials Ltd | Wholesale & retail | 2025 |
| Kineo Finance Limited | Financial services | 2024 |
| Kinetic Alliance Limited | Other services | 2017 |
| Kinetic SIX Limited | Arts & recreation | 2021 |
| Kinetic Systems (Bristol) Limited | Construction | 2012 |
| Kineticads Limited | Professional & scientific | 2021 |
| Kinetikpro Ltd | Professional & scientific | 2020 |
| King & BOW Consulting Ltd | Professional & scientific | 2010 |
| King and Webbon Ltd | Manufacturing | 2017 |
| King Creation Limited | Information & communication | 2003 |
| King Johns Court Management Limited | Households | 2007 |
| King Kong Building Services Ltd | Construction | 2024 |
| King of the Road Limited | Education | 2024 |
| King Sound Reinforcement Ltd. | Administrative & support | 1998 |
| King Square Avenue Management Company Limited | Households | 2005 |
| King Square Limited | Households | 2021 |
| King's Vegan Grooming Ltd | Wholesale & retail | 2017 |
| Kingacre Limited | Professional & scientific | 2002 |
| Kingdom Auto Storage Limited | Transport & logistics | 2014 |
| Kingdom Finance Technology Limited | Information & communication | 2023 |
| Kingdom Mortgages Ltd | Financial services | 2010 |
| Kingdom Occupier's Ambassadorship Foundation | Other services | 2020 |
| Kingdon Faith Ltd | Administrative & support | 2026 |
| Kingfisher 7 Limited | Education | 2017 |
| Kingfisher Bathrooms Bristol Ltd | Construction | 2021 |
| Kingfisher Fuels Limited | Transport & logistics | 2016 |
| Kingfisher Green Management Company Limited | Households | 1997 |
| Kingfisher Healthcare Limited | Health & social care | 2008 |
| Kingfisher Labels Limited | Administrative & support | 1995 |
| Kingfisher Management Company Limited | Real estate | 1983 |
| Kingfisher Renovations Ltd | Construction | 2020 |
| Kingfisher Solutions Ltd | Administrative & support | 2016 |
| Kingfisher Training Services Ltd | Education | 2022 |
| Kingfisher Way Management Company Ltd | Real estate | 2023 |
| Kingo Consultancy Ltd | Professional & scientific | 2016 |
| Kingpin Electrical Limited | Construction | 2015 |
| Kings Court (Southville) Management Company Limited | Households | 2004 |
| Kings Court Trust Limited | Professional & scientific | 2002 |
| Kings Heavy Haulage (Bristol) Limited | Transport & logistics | 1977 |
| Kings House Construction Consultants Limited | Professional & scientific | 2021 |
| Kings of Somerset Limited | Other services | 2016 |
| Kings Plastics Limited | Other services | 1957 |
| Kings Property Enterprise Ltd | Construction | 2024 |
| Kings Weston House Limited | Hospitality | 2002 |
| Kings Weston Limited | Real estate | 2019 |
| Kings Wood Court (Cleeve) Management Limited | Other services | 2007 |
| Kingsbake Limited | Manufacturing | 2010 |
| Kingsbridge Holiday Lets Limited | Real estate | 2023 |
| Kingsbridge Independent Mortgage Advice Limited | Professional & scientific | 2016 |
| Kingsbridge Mortgage Advice Limited | Professional & scientific | 2020 |
| Kingscote Accountancy Limited | Professional & scientific | 2013 |
| Kingscote Property Limited | Real estate | 2021 |
| Kingscourt Cladding Services Limited | Construction | 2013 |
| Kingsdown Parade Management Company Limited | Households | 1971 |
| Kingsfield Close Wick (Bristol) Management Company Limited | Water & waste | 2011 |
| Kingsfield Inns Limited | Wholesale & retail | 2007 |
| Kingshill Court Nailsea Management Limited | Households | 2005 |
| Kingsholm Church | Other services | 2014 |
| Kingsland House Property Management Limited | Real estate | 2001 |
| Kingsley John Limited | Wholesale & retail | 2022 |
| Kingsley Property Bristol Limited | Real estate | 2025 |
| Kingsmead Bath Ltd | Hospitality | 2019 |
| Kingsmeadow @ Madeforever Ltd | Other services | 2012 |
| Kingsmill Residents (Stoke Bishop) Limited | Households | 1977 |
| Kingsmoor Construction Ltd | Construction | 2020 |
| Kingsthorpe Ltd | Real estate | 2014 |