| KDR Transport Ltd | Transport & logistics | 2025 |
| KDS Express Limited | Wholesale & retail | 2021 |
| KDS21 Ltd | Wholesale & retail | 2024 |
| KDS318 Ltd | Administrative & support | 2017 |
| Kdstore Ltd | Information & communication | 2025 |
| KDT Roofing Services Ltd | Construction | 2024 |
| Kdta Ltd | Information & communication | 2019 |
| KDZ Cuts Ltd | Other services | 2023 |
| KE 247 Staffing Solutions Ltd | Health & social care | 2018 |
| Ke's Car's Ltd | Wholesale & retail | 2023 |
| Ke.Skin Aesthetic London Ltd | Other services | 2024 |
| Ke.Skin Aesthetic Ltd | Other services | 2024 |
| KE247 SS Ltd | Health & social care | 2026 |
| KE3M Ltd | Wholesale & retail | 2025 |
| KE7 Limited | Other services | 2019 |
| Keane Construction (Midlands) Limited | Construction | 1963 |
| Keane Design Associates Limited | Administrative & support | 1998 |
| Kear-Dudley Holdings Ltd | Financial services | 2024 |
| Kear-Dudley Ltd | Other services | 2020 |
| Keara Aesthetic Ltd | Other services | 2023 |
| Keara Scholar Path Ltd | Education | 2024 |
| Kearan S K Limited | Health & social care | 2024 |
| KEB Installations Ltd | Other services | 2019 |
| Keba Hospitality Ltd | Hospitality | 2020 |
| Kebab Hub Bham Limited | Hospitality | 2024 |
| Kebab Republik Alamrock Ltd | Hospitality | 2025 |
| Kebabs 4 U Ltd | Hospitality | 2023 |
| Kebire UK Ltd | Other services | 2020 |
| Kebra Boutique Ltd | Wholesale & retail | 2025 |
| Kebra Properties Ltd | Construction | 2021 |
| Kebtek Ltd | Manufacturing | 2021 |
| Kecs Holdings Limited | Real estate | 2025 |
| Kedleston Dental Practice Limited | Health & social care | 2014 |
| Kedric Quality Ltd | Wholesale & retail | 2025 |
| KEE Youth UK CIC | Education | 2023 |
| Keebowings Ltd | Hospitality | 2022 |
| Keelan Taylor Care Ltd | Health & social care | 2023 |
| Keeley Ann's Limited | Financial services | 2003 |
| Keeley Capital Limited | Real estate | 2022 |
| Keeley Stokes Catering Ltd | Hospitality | 2022 |
| Keen Care WM Limited | Health & social care | 2023 |
| Keen Consulting Services Limited | Professional & scientific | 2025 |
| Keen Education Ltd | Wholesale & retail | 2018 |
| Keener Kleaning Limited | Administrative & support | 2024 |
| Keenprice Limited | | 1985 |
| Keep Going YOU CAN DO IT Ltd | Administrative & support | 2023 |
| Keep Hope Alive | Health & social care | 2024 |
| Keep IT UP CAN DO IT Ltd | Manufacturing | 2024 |
| Keep ME Toastie Limited | Households | 2024 |
| Keep Reaching OUT Ltd | Health & social care | 2026 |
| Keep Talking Shop Limited | Wholesale & retail | 2014 |
| KEEP-IT-REAL-21ENTERTAINMENT Limited | Information & communication | 2021 |
| Keepers Gate (WSM) Residents Management Company Limited | Households | 2018 |
| Keepers Lock Management Company Limited | Households | 2012 |
| Keepsi Ltd | Information & communication | 2011 |
| Keethu Limited | Professional & scientific | 2016 |
| Keey 2 Ltd | Administrative & support | 2019 |
| KEG Kollective Limited | Hospitality | 2025 |
| Kegmaster Limited | Wholesale & retail | 2002 |
| KEH Electrical Services Limited | Construction | 2022 |
| KEH Enterprises Limited | Real estate | 2022 |
| KEI Hing Kitchen Ltd | Hospitality | 2025 |
| Keicha Limited | Real estate | 2025 |
| Keikae Property Ltd | Real estate | 2020 |
| Keiko Academy Limited | Education | 2025 |
| Keiran Goddard Ltd | Arts & recreation | 2020 |
| Keisha's Kuisine Ltd | Hospitality | 2022 |
| Keith Emery Quality Butchers Limited | Wholesale & retail | 2020 |
| Keith Spedding Notary Public Ltd | Professional & scientific | 2024 |
| Keiths Transport Limited | Transport & logistics | 2016 |
| Keiton Engineering Company Limited | Manufacturing | 1987 |
| Keivaughn Properties Limited | Real estate | 2025 |
| Keke Kosmetics Limited | Other services | 2026 |
| Kel-Van Ltd | Manufacturing | 2010 |
| Kelco Heating Limited | Construction | 2015 |
| Kelcon Construction Ltd | Construction | 2017 |
| Kelford Grinding Limited | Manufacturing | 2009 |
| Kellarcroft Limited | Construction | 2020 |
| Kellmann Recruitment Limited | Other services | 2017 |
| Kelly D Care Limited | Health & social care | 2021 |
| Kelly Development Group Limited | Construction | 2025 |
| Kelly Developments (Hockley) Limited | Construction | 2026 |
| Kelly Developments (Tilehouse) Limited | Construction | 2026 |
| Kelly Groundworks Limited | Construction | 2007 |
| Kelly Haulage & Crane Hire Ltd | Transport & logistics | 2025 |
| Kelly Management Solutions Limited | Professional & scientific | 2014 |
| Kelly Nails 29 Ltd | Other services | 2026 |
| Kelly Sheppard Solutions Ltd | Other services | 2019 |
| Kelly's Nationwide Cars Ltd | Administrative & support | 2016 |
| Kelly-Springfield Tyre Company Limited | Manufacturing | 1927 |
| Kellys Cars Ltd | Transport & logistics | 2022 |
| Kellyu Limited | Wholesale & retail | 2025 |
| Kelmarsh Limited | Wholesale & retail | 2019 |
| Keloo Limited | Wholesale & retail | 2024 |
| Kelper Limited | Financial services | 2025 |
| Kelsall Steele Investment Services Limited | Financial services | 1997 |
| Kelsey One Limited | Financial services | 2026 |
| Kelsey Stores Ltd | Wholesale & retail | 2012 |
| Kelson Contracts Limited | Extraterritorial | 2011 |
| Kelton Court Block 1 - 6 RTM Company Limited | Households | 2026 |