| Kidswitch Ltd | Manufacturing | 2018 |
| Kidz Fantasy Club Limited | Education | 2017 |
| Kidz Party BUS Ltd | Arts & recreation | 2022 |
| Kidz Place After School & Holiday Club Ltd | Education | 2017 |
| Kieleg Ltd | Transport & logistics | 2025 |
| Kiemol Ltd | Professional & scientific | 2020 |
| Kieran Hall Holding Ltd | Administrative & support | 2015 |
| Kieran Malone Properties Limited | Construction | 2020 |
| Kieron Hospitality Group Limited | Hospitality | 2024 |
| KIH Property Ltd | Real estate | 2025 |
| Kiing Barber Oswestry Ltd | Other services | 2023 |
| Kiing Kebab Smithdown Road Ltd | Hospitality | 2023 |
| Kiing Shawarma Liverpool Ltd | Hospitality | 2025 |
| Kiingsley Store Ltd | Wholesale & retail | 2026 |
| Kilberry Estates Ltd | Wholesale & retail | 2002 |
| Kilbury and Alton Trading Ltd | Wholesale & retail | 2015 |
| Kilicbabacatering Ltd | Hospitality | 2025 |
| Kilimanjaro Foods Limited | Wholesale & retail | 2024 |
| Kilkern Vacuum Excavation Ltd | Construction | 2020 |
| Killa Builds Ltd | Wholesale & retail | 2023 |
| Killby & Gayford (Consolidation) Limited | Professional & scientific | 1998 |
| Killer (Holdings) Limited | Professional & scientific | 2014 |
| Killer INK Limited | Wholesale & retail | 2009 |
| Killer Presentations Ltd | Professional & scientific | 2011 |
| Killoran Civil Engineering Limited | Construction | 1973 |
| Kilm IT Ltd | Professional & scientific | 2019 |
| Kilmarnon Consulting Limited | Information & communication | 2015 |
| Kiln HEY Residents Association Limited | Households | 1990 |
| Kiloecho Ltd | Administrative & support | 2017 |
| Kilter Homes Ltd | Health & social care | 2022 |
| Kilty & Co Events Ltd | Hospitality | 2024 |
| Kilty Hospitality Limited | Hospitality | 2019 |
| Kilty Properties Ltd | Real estate | 2025 |
| Kim's Hair Ltd | Other services | 2020 |
| Kimberley Curran Limited | Professional & scientific | 2017 |
| Kimblewick Solar Limited | Energy | 2021 |
| Kimell Leisure Ltd | Arts & recreation | 2016 |
| Kimish Ltd | Real estate | 2024 |
| Kimmance (North West) Ltd | Real estate | 2001 |
| Kimmance Holdings Limited | Real estate | 2022 |
| Kimmance Properties Limited | Real estate | 1994 |
| Kimmance Property Development & Consulting Limited | Real estate | 2019 |
| Kimosi Property Group Ltd | Real estate | 2019 |
| Kimwall Limited | Wholesale & retail | 1975 |
| KIN & Clementine Holdings Ltd | Professional & scientific | 2025 |
| KIN Ball UK CIC | Education | 2018 |
| KIN Probate Limited | Professional & scientific | 2017 |
| KIN Village CIC | Hospitality | 2024 |
| Kincou Limited | Real estate | 2024 |
| Kind Heart Support Services Ltd | Health & social care | 2024 |
| Kindecs Properties LLP | | 2025 |
| Kindergarten Day Nursery Ltd | Education | 2018 |
| Kinderwagon Limited | Wholesale & retail | 2003 |
| Kindheart Care Limited | Public administration | 2025 |
| Kindly Connect CIC | Health & social care | 2025 |
| Kindmindsltd Ltd | Health & social care | 2025 |
| Kindness Services Ltd | Transport & logistics | 2026 |
| Kindnest Companions Ltd | Education | 2026 |
| Kindred Care Recruitmnet Ltd | Administrative & support | 2026 |
| Kindred Data Services Limited | Information & communication | 2025 |
| Kindred Earth Ltd | Wholesale & retail | 2023 |
| Kindred Estate Planning Ltd | Professional & scientific | 2020 |
| Kindred LCR CIC | Financial services | 2020 |
| Kindred Nest & Properties Ltd | Hospitality | 2025 |
| Kinematics Space Ltd | Manufacturing | 2021 |
| Kinetic Claims Ltd | Administrative & support | 2026 |
| Kinetic GAS Solutions Limited | Construction | 2025 |
| Kinetik Grips Ltd. | Manufacturing | 2018 |
| Kinexis Group Ltd | Professional & scientific | 2023 |
| King Components Limited | Wholesale & retail | 1999 |
| King David and Harold House Foundation | Education | 2010 |
| King of Spades Landscaping Ltd | Administrative & support | 2015 |
| King Property Ltd | Real estate | 2019 |
| King Refining Limited | Other services | 2017 |
| Kinga Chyb Ltd | Health & social care | 2018 |
| Kingdom Ecology Ltd | Professional & scientific | 2011 |
| Kingdom Heritage Investments Ltd | Real estate | 2019 |
| Kingfisher Carpets & Artificial Grass (NW) Ltd | Wholesale & retail | 2024 |
| Kingfisher Distribution Limited | Wholesale & retail | 2019 |
| Kingfisher Project Services Limited | Construction | 2022 |
| Kingham Liverpool Limited | Professional & scientific | 2012 |
| Kingmoor Aviation Limited | Transport & logistics | 2002 |
| KINGOBI1 Ltd | Other services | 2022 |
| Kings Cross Area Property Limited | Real estate | 2017 |
| Kings Kidswear Ltd | Wholesale & retail | 2025 |
| Kings Property Investments Ltd | Real estate | 2020 |
| Kings Sport Ltd | Arts & recreation | 2025 |
| Kings Waterfront (Management Company) Limited | Households | 2001 |
| Kingsheath and District Veteran's Association | Other services | 2023 |
| Kingslake Management Ltd | Real estate | 2013 |
| Kingsley Apiary Ltd | Hospitality | 2023 |
| Kingsley Property Partners Limited | Real estate | 2025 |
| Kingsman Software Solutions Ltd. | Information & communication | 2015 |
| Kingston & Johnson Ltd | Professional & scientific | 2026 |
| Kingston Construction (NW) Limited | Construction | 2019 |
| Kingsway Consultancy Ltd | Professional & scientific | 2019 |
| Kingsway Plumbing & Heating Limited | Construction | 2002 |
| Kingsway Tanning Lounge Ltd | Other services | 2025 |
| Kingswood Construction & Adaptation Services Ltd. | Construction | 2021 |
| Kinicho Ltd | Information & communication | 2012 |