| KS Projects London Ltd | Construction | 2023 |
| KS20 Builders Ltd | Construction | 2024 |
| Ksar Consulting Limited | Information & communication | 2020 |
| Ksar Property Management Ltd | Real estate | 2023 |
| Ksawhney Consulting Limited | Administrative & support | 2016 |
| KSB Cleaning Services Ltd | Administrative & support | 2024 |
| Ksbg Ltd | Hospitality | 2025 |
| KSD Developments Limited | Real estate | 2024 |
| KSD Finance Ltd | Financial services | 2015 |
| Kseye Ltd | Financial services | 2009 |
| KSG London Limited | Hospitality | 2011 |
| KSG Restaurant Ltd | Hospitality | 2023 |
| Ksgxtsa Ltd | Education | 2024 |
| KSJ Accountants Ltd | Professional & scientific | 2011 |
| Ksjd Ltd | Hospitality | 2004 |
| KSK (Inc) Limited | Administrative & support | 2019 |
| KSM Foods 2003 Ltd | Hospitality | 2026 |
| KSM Optical Limited | Administrative & support | 2003 |
| KSM Sales Ltd | Construction | 2024 |
| KSM Trading Limited | Real estate | 2019 |
| Ksmv Mill Consultant Props Limited | Real estate | 2026 |
| Kspark Entertainments Limited | Education | 2008 |
| KSR Property and Investments Limited | Real estate | 2023 |
| KSR Property Limited | Real estate | 2023 |
| Ksrup Properties Limited | Real estate | 2015 |
| KSS Maxillofacial Ltd | Health & social care | 2022 |
| KST Construction Ltd | Construction | 2023 |
| KT & a Limited | Health & social care | 2016 |
| KT London Limited | Hospitality | 2015 |
| KT Private Limited | Wholesale & retail | 2025 |
| KT Rehoboth Ltd | Transport & logistics | 2024 |
| Ktan Ltd | Real estate | 2018 |
| KTB Creative Limited | Arts & recreation | 2024 |
| KTE After School Club Limited | Health & social care | 2026 |
| Kticic Design and Build Ltd | Other services | 2019 |
| KTM (North East) Limited | Hospitality | 2018 |
| KTM Properties Ltd | Real estate | 2023 |
| KTM Property Solutions Ltd | Real estate | 2026 |
| KTM Stores Ltd | Wholesale & retail | 2020 |
| KTM2 Properties Ltd | Real estate | 2019 |
| Ktmi Limited | Professional & scientific | 2014 |
| Ktnj Ltd | Real estate | 2018 |
| KTS Accountants Ltd | Professional & scientific | 2017 |
| KTS Housing Ltd | Real estate | 2026 |
| KTS Investment Ltd | Professional & scientific | 2020 |
| KTX Solution Ltd | Construction | 2025 |
| Kubapetals Ltd | Wholesale & retail | 2023 |
| Kuber Commerce Ltd | Transport & logistics | 2026 |
| Kuber Scooter Ltd | Wholesale & retail | 2024 |
| Kubha Ltd | Wholesale & retail | 2025 |
| Kuchh NAI Marketing Limited | Other services | 1996 |
| Kuga Holidays Ltd | Administrative & support | 2025 |
| Kujo Ltd | Health & social care | 2023 |
| Kuku Investments Limited | Real estate | 2024 |
| Kult Fiktion Limited | Information & communication | 2004 |
| Kuluc Ltd | Administrative & support | 2017 |
| Kumar Group Limited | Real estate | 2022 |
| Kumarkones Limited | Real estate | 2024 |
| Kumar’S Vegetarian Ltd | Hospitality | 2024 |
| Kunal Patel Sound Limited | Information & communication | 2026 |
| Kundi Development Corporation UK Ltd | Professional & scientific | 2025 |
| Kunjdil Holdings Limited | Financial services | 2023 |
| Kunvarj Capital Ltd | Financial services | 2020 |
| Kurata UK Limited | Financial services | 2011 |
| Kurinji Food Ltd | Hospitality | 2026 |
| Kurt Hicks Ltd | Construction | 2025 |
| Kush Housing Service Ltd | Real estate | 2022 |
| Kuthumania Ltd | Education | 2023 |
| Kutumba Limited | Real estate | 2020 |
| Kuvarji & Sons Ltd | Construction | 2013 |
| KV Investments Ltd | Households | 2012 |
| KV Property Partners Ltd | Real estate | 2017 |
| KV Real Estate Limited | Real estate | 2019 |
| KVG19 Limited | Professional & scientific | 2014 |
| KVK Financial Services Ltd | Financial services | 2022 |
| Kvkp Ltd | Construction | 2025 |
| KVP Crown Limited | Wholesale & retail | 2025 |
| KVP Solutions Ltd | Transport & logistics | 2025 |
| KVS Solutions Ltd | Construction | 2014 |
| KWA Services Limited | Wholesale & retail | 2003 |
| Kwear UK Limited | Wholesale & retail | 2024 |
| Kwetu Restaurants Limited | Hospitality | 2025 |
| Kwik FIX Motors Ltd | Wholesale & retail | 2021 |
| KWJ Properties Limited | Real estate | 2023 |
| Kwong Ming Corporation Ltd | Health & social care | 2010 |
| KWT Motors Ltd | Wholesale & retail | 2026 |
| KWV Ltd | Construction | 2019 |
| Kyles Online Ltd | Wholesale & retail | 2024 |
| Kylie Clark Consultancy Limited | Professional & scientific | 2019 |
| Kylu Limited | Hospitality | 2017 |
| Kymd Properties Limited | Real estate | 2018 |
| KYN Construction Ltd | Financial services | 2025 |
| KYN Services Ltd | Construction | 2012 |
| Kynet Direct Ltd | Wholesale & retail | 2008 |
| Kynet Limited | Information & communication | 2002 |
| KYO Service Properties Limited | Real estate | 1991 |
| Kyoho Ltd | Information & communication | 2024 |
| Kyrah Motors Ltd | Wholesale & retail | 2021 |
| Kyrah Travels Ltd | Transport & logistics | 2019 |
| Kyrav Ltd | Professional & scientific | 2015 |