| Kabir Deliveries Ltd | Transport & logistics | 2025 |
| Kabir Immigration Ltd | Professional & scientific | 2021 |
| Kabir Technologies Ltd | Information & communication | 2023 |
| Kabora Security Services Ltd | Administrative & support | 2022 |
| Kabour HFS Ltd | Wholesale & retail | 2020 |
| Kabsons Ltd | Wholesale & retail | 2025 |
| Kabul A1 Restaurant Ltd | Hospitality | 2025 |
| Kabul Darbar Classic Food Ltd | Hospitality | 2020 |
| Kabul Darbar Restaurants Birmingham Ltd | Hospitality | 2017 |
| Kabul Dessernt and Takeaway Limited | Manufacturing | 2024 |
| Kabul Enterprises Limited | Wholesale & retail | 2022 |
| Kabul Express General Store Ltd | Wholesale & retail | 2023 |
| Kabul Foods Trading Ltd | Wholesale & retail | 2025 |
| Kabul JAN Supermarket Ltd | Wholesale & retail | 2025 |
| Kabul Khana Ltd | Hospitality | 2026 |
| Kabul Royaal Ltd | Hospitality | 2025 |
| Kabuls Enterprise Ltd | Hospitality | 2025 |
| Kacc Ltd | Health & social care | 2021 |
| Kacha Bazar Birmingham Limited | Wholesale & retail | 2019 |
| Kack Catering Ltd | Hospitality | 2021 |
| Kack Express Ltd | Hospitality | 2021 |
| Kack Ltd | Hospitality | 2021 |
| Kacpa Limited | Wholesale & retail | 2015 |
| KAD Building Services Ltd | Construction | 2022 |
| Kadampa Meditation Centre Birmingham | Other services | 1993 |
| Kadd Ltd | Wholesale & retail | 2021 |
| Kadeem Limited | Administrative & support | 2025 |
| Kadelin Ltd | Real estate | 2026 |
| Kadija’S Grill Ltd | Hospitality | 2019 |
| Kadines 360 Photo Booth Ltd | Professional & scientific | 2021 |
| Kadk Ltd | Real estate | 2023 |
| Kadmog Automobile & Services Limited | Wholesale & retail | 2022 |
| Kadosh Jewels Ltd | Wholesale & retail | 2023 |
| Kads Housing Ltd | Real estate | 2025 |
| Kaemingk Limited | Wholesale & retail | 2008 |
| Kafconstruct Limited | Construction | 2024 |
| Kafd Property Group Ltd | Real estate | 2024 |
| Kafel AID | Education | 2013 |
| Kafem Ltd | Construction | 2024 |
| Kafetzis Capital Ltd | Real estate | 2026 |
| Kaffine Ltd | Hospitality | 2016 |
| Kaffykreate Limited | Professional & scientific | 2023 |
| Kafi Enterprise Ltd | Wholesale & retail | 2025 |
| Kafi Transport Limited | Transport & logistics | 2024 |
| Kafur Ltd | Hospitality | 2025 |
| KAG Healthcare Ltd | Health & social care | 2025 |
| Kagool Ltd | Information & communication | 2009 |
| Kahlon Local Limited | Wholesale & retail | 2022 |
| Kahn Estates Maintenance Group Ltd | Households | 2025 |
| Kahu Ltd | Information & communication | 2010 |
| KAI Carbon Ltd | Professional & scientific | 2023 |
| KAI Construction Ltd | Construction | 2023 |
| KAI ECO2U Ltd | Professional & scientific | 2023 |
| KAI ESG Ltd | Professional & scientific | 2023 |
| KAI Ko's Ltd | Other services | 2008 |
| KAI Xuan Limited | Health & social care | 2025 |
| Kaichuang Limited | Health & social care | 2018 |
| Kaid Estates Ltd | Real estate | 2025 |
| Kaiden Homes Ltd | Real estate | 2023 |
| Kaiden Ltd | Real estate | 2025 |
| Kaifi Shop Limited | Wholesale & retail | 2025 |
| Kaifuku Capital Ltd | Administrative & support | 2014 |
| Kaigen Ventures Ltd | Education | 2026 |
| Kaila World Multiservices Ltd | Manufacturing | 2025 |
| Kainat Ijaz Ltd | Wholesale & retail | 2025 |
| Kaine Properties Ltd | Real estate | 2017 |
| Kaira Properties Ltd | Real estate | 2018 |
| Kairabaa Healthcare Ltd | Health & social care | 2023 |
| Kairo Education Limited | Education | 2025 |
| Kairo Enterprise Group Ltd | Financial services | 2025 |
| Kairodev&Transport Ltd | Water & waste | 2025 |
| Kairos Cleaning Solutions Ltd | Administrative & support | 2025 |
| Kairos Dwellings Ltd | Financial services | 2025 |
| Kairos Emergence Ltd | Information & communication | 2025 |
| Kairos Health Limited | Health & social care | 2026 |
| Kairos I T Solution Ltd | Information & communication | 2024 |
| Kairox Global Limited | Real estate | 2025 |
| Kaiser Doors Limited | Construction | 2003 |
| Kaizen 101 Ltd | Information & communication | 2022 |
| Kaizen Capital Limited | Administrative & support | 2018 |
| Kaizen Capital Partners Limited | Administrative & support | 2018 |
| Kaizen Futures Ltd | Financial services | 2023 |
| Kaizen Holding Company 1 Ltd | Financial services | 2021 |
| Kaizen Initiative Ltd | Education | 2023 |
| Kaizen Wealth Group Ltd | Professional & scientific | 2020 |
| Kaizensoft Technologies Limited | Information & communication | 2001 |
| Kajans Educational and Cultural Trust | Education | 2012 |
| Kajans Women's Enterprise Limited | Real estate | 2004 |
| Kaka Cars Birmingham Ltd | Administrative & support | 2024 |
| Kaka Mini Market Ltd | Wholesale & retail | 2026 |
| Kaka Murad Immigration Services Ltd | Other services | 2023 |
| Kaka Tyres Ltd | Other services | 2020 |
| Kakar Investments Ltd | Real estate | 2016 |
| Kakar Traders Ltd | Wholesale & retail | 2025 |
| Kakicleans Ltd | Transport & logistics | 2025 |
| KAL Enterprises Ltd | Wholesale & retail | 2014 |
| KAL Realty Ltd | Real estate | 2023 |
| Kal's Community Projects Community Interest Company | Health & social care | 2020 |
| Kala Phool 2 Limited | Arts & recreation | 2016 |
| Kala Phool Limited | Administrative & support | 2026 |