| Khalsa Couriers London Limited | Transport & logistics | 2025 |
| Khalsa Minds Tutoring Limited | Education | 2025 |
| Khalsa Readymix Concrete Ltd | Construction | 2026 |
| Khalsa Transport & Logistic Limited | Transport & logistics | 2021 |
| Khalsa Travel Ltd | Transport & logistics | 2023 |
| Khan Design Company Ltd | Wholesale & retail | 2025 |
| Khangura Transport Ltd | Transport & logistics | 2021 |
| Khanna Property Limited | Real estate | 2018 |
| Khans Auto Technician Ltd | Wholesale & retail | 2022 |
| Kharal Properties Limited | Real estate | 2026 |
| Kharoud Transport Ltd | Transport & logistics | 2024 |
| Khasria Transport Ltd | Transport & logistics | 2018 |
| Khatoon Trading Ltd | Wholesale & retail | 2025 |
| Khatri Property Investment Ltd | Real estate | 2026 |
| Khatris Tasty Momo Ltd | Manufacturing | 2026 |
| Khattra Saini Transport Ltd | Transport & logistics | 2021 |
| Khayban Mall Ltd | Wholesale & retail | 2026 |
| KHB Properties Ltd | Real estate | 2021 |
| Khehra Transport Ltd | Transport & logistics | 2018 |
| Khela Kustomz Ltd | Wholesale & retail | 2025 |
| Khen Limited | Real estate | 2025 |
| KHH Holdings Limited | Real estate | 2018 |
| Khne Solutions Ltd | Wholesale & retail | 2024 |
| Khosh Construction Ltd | Construction | 2026 |
| KHP Wolverhampton Limited | Other services | 2025 |
| KHR - ENT Ltd | Wholesale & retail | 2026 |
| KHR Solutions Limited | Wholesale & retail | 2025 |
| KHS Constructions Limited | Construction | 2019 |
| KHS Trader Ltd | Wholesale & retail | 2023 |
| KHS Universal Holdings Limited | Financial services | 2022 |
| Khubon Healthcare Limited | Health & social care | 2022 |
| Khyber Shop 14 Ltd | Wholesale & retail | 2023 |
| Khyber Shop 18 WV1 Ltd | Wholesale & retail | 2025 |
| Khyber Shop 21 Ltd | Wholesale & retail | 2024 |
| KI Auto Recovery Ltd | Wholesale & retail | 2017 |
| Kiban Properties Limited | Real estate | 2024 |
| KIC Digital Radio Limited | Information & communication | 2025 |
| KIC FM Limited | Manufacturing | 2004 |
| Kick ASS Curry Ltd | Hospitality | 2025 |
| Kicksix Ltd | Information & communication | 2024 |
| Kickz R URS Limited | Wholesale & retail | 2016 |
| Kicsters Limited | Administrative & support | 2013 |
| Kids After Hours Foundation Limited | Wholesale & retail | 2026 |
| Kids in Communication | Information & communication | 1996 |
| Kielsi Properties Limited | Real estate | 2021 |
| Kigfast Ltd | Manufacturing | 2019 |
| Kik.Bg Ltd | Transport & logistics | 2018 |
| Kiki's Podiatry & Fungal Nail Laser Clinic Ltd | Other services | 2023 |
| Kilco Builders Limited | Construction | 1981 |
| Kilt Outfitter Ltd | Wholesale & retail | 2025 |
| Kimaculate Ltd | Health & social care | 2023 |
| Kimberlin Group Limited | Arts & recreation | 2025 |
| Kimleah Properties Ltd | Real estate | 2023 |
| Kimsonbooks Ltd | Manufacturing | 2026 |
| Kinder Days SEN Ltd | Education | 2025 |
| Kinder Transport Ltd | Transport & logistics | 2023 |
| Kindfort Resource Ltd | Administrative & support | 2022 |
| Kindred Spirit Properties Limited | Real estate | 2022 |
| Kinetic Engineering Supplies Limited | Professional & scientific | 2014 |
| Kinetik Construction Ltd | Construction | 2026 |
| King & Moffatt UK Limited | Construction | 2009 |
| King Trolley Ltd | Manufacturing | 2023 |
| Kingcrest Games Limited | Extraterritorial | 2023 |
| Kingdom Building Services Limited | Construction | 2025 |
| Kingdom Care and Support Ltd | Health & social care | 2025 |
| Kingfisher Software Solutions Limited | Information & communication | 2008 |
| Kings Law Solicitors Limited | Professional & scientific | 2014 |
| Kings Loade Estate Management Company Limited | Households | 1998 |
| Kings Loade Flat Management Company Limited | Households | 1998 |
| Kingsley Academy Ltd | Education | 2025 |
| Kingsley Allen Housing Ltd | Real estate | 2025 |
| Kingslow Group Holdings Limited | Professional & scientific | 2015 |
| Kingslow Group Topco Ltd | Financial services | 2026 |
| Kingswood Lakeside Developments Limited | Real estate | 2013 |
| Kingswood Trust | Education | 2012 |
| Kink Private Limited | Wholesale & retail | 2026 |
| Kinnersley Consultants Limited | Real estate | 2020 |
| Kintsu Official Ltd | Wholesale & retail | 2025 |
| Kinver Design and Marketing Limited | Professional & scientific | 2009 |
| Kinver Funeral Directors Limited | Extraterritorial | 2009 |
| Kinzas Kennel Ltd | Real estate | 2026 |
| Kipiriem Ltd | Hospitality | 2025 |
| Kippa Enterprises Ltd | Hospitality | 2019 |
| Kipsies Bar & Live Music Venues Ltd | Hospitality | 2024 |
| Kiran Millwood Hargrave Ltd | Arts & recreation | 2018 |
| Kirat Transport Ltd | Transport & logistics | 2017 |
| Kirby & Co. Luxe Renovations Ltd | Construction | 2026 |
| Kirpa Electrical Ltd | Construction | 2025 |
| Kirpa Property Ltd | Real estate | 2018 |
| Kirpa Transport Services Ltd | Transport & logistics | 2022 |
| Kirpark Services Limited | Health & social care | 2014 |
| Kirrie Ltd | Health & social care | 2021 |
| Kirstall Limited | Professional & scientific | 2003 |
| Kisaanv Aesthetics Limited | Health & social care | 2024 |
| Kismat Capital Ltd | Administrative & support | 2021 |
| Kismet Coffee Ltd | Hospitality | 2025 |
| Kiss My ASS Productions Ltd | Information & communication | 2003 |
| Kiss of the Dragon Ltd | Wholesale & retail | 2023 |
| Kist Group Ltd | Professional & scientific | 2024 |
| Kitchen & Bedroom Technique Ltd | Wholesale & retail | 2003 |