| K M Everitt Limited | Professional & scientific | 2010 |
| K Mooney Roofing Ltd | Construction | 2024 |
| K Plumbing Solutions Limited | Construction | 2011 |
| K Q Logistics Limited | Transport & logistics | 2025 |
| K S Properties NW Ltd | Real estate | 2025 |
| K Taylor Properties Ltd | Real estate | 2017 |
| K X Mgmt Group Ltd | Real estate | 2023 |
| K&A Oldham Ltd | Hospitality | 2023 |
| K&A Travel Services Ltd | Administrative & support | 2022 |
| K&H Haulage Ltd | Transport & logistics | 2024 |
| K&K Optical Limited | Wholesale & retail | 2026 |
| K&K Travel Ltd | Transport & logistics | 2021 |
| K&K UK Properties Ltd | Real estate | 2020 |
| K&L Precision Engineering Ltd | Professional & scientific | 2025 |
| K&M Global Limited | Administrative & support | 2017 |
| K'S Pátisserie Ltd | Hospitality | 2023 |
| K-Huss Properties Ltd | Real estate | 2020 |
| K.D&G Nanny Services Ltd | Transport & logistics | 2022 |
| K2 Sports Management Limited | Arts & recreation | 1999 |
| K2 Union Hospitality Limited | Financial services | 2021 |
| K9 Boot Camp Limited | Other services | 2014 |
| K9 Protocol Ltd | Wholesale & retail | 2026 |
| KA Motors Oldham Ltd | Wholesale & retail | 2023 |
| KA Software Services Ltd | Professional & scientific | 2025 |
| Kaaboom Fireworks Ltd | Wholesale & retail | 2023 |
| Kaagaz Ltd | Wholesale & retail | 2012 |
| Kaasuu Properties Ltd | Real estate | 2018 |
| KAB Systems UK Ltd | Manufacturing | 2005 |
| Kaddy's Superwhip MCR Ltd | Hospitality | 2022 |
| Kaddys Ices Ltd | Hospitality | 2025 |
| Kaisa the Label Ltd | Wholesale & retail | 2024 |
| Kaise Ltd | Wholesale & retail | 2020 |
| Kaiza Capital Ltd | Financial services | 2020 |
| Kaizen Engineering Group Limited | Manufacturing | 2017 |
| KAL Building Solutions Limited | Construction | 2022 |
| KAL Commercials Ltd | Wholesale & retail | 2025 |
| Kalar Proprties Ltd | Real estate | 2025 |
| Kalco Investments Limited | Construction | 2000 |
| Kaleidomachina Ltd | Information & communication | 2025 |
| Kalix Ltd | Professional & scientific | 2026 |
| Kalyal Ltd | Wholesale & retail | 2023 |
| Kamba HL Accounting Ltd | Professional & scientific | 2024 |
| Kameer Enterprise Ltd | Wholesale & retail | 2026 |
| Kamo for Multi Activities Ltd | Wholesale & retail | 2021 |
| Kana Locums Ltd | Wholesale & retail | 2023 |
| Kande Trade Ltd | Wholesale & retail | 2021 |
| Kandy Kingdom 786 Ltd | Wholesale & retail | 2025 |
| Kandy Kraze Bar Limited | Hospitality | 2020 |
| Kandy Kraze Bar Oldham Limited | Hospitality | 2025 |
| Kandy Land Oldham Ltd | Wholesale & retail | 2025 |
| Kangafix Limited | Wholesale & retail | 2017 |
| Kanisi Ltd | Information & communication | 2012 |
| Kannatrix UK Ltd | Manufacturing | 2025 |
| Kanyadan Wedding Services Limited | Information & communication | 2015 |
| Kapal Vera Ltd | Wholesale & retail | 2024 |
| Kara Property Holdings Ltd | Real estate | 2024 |
| Kara Stores Ltd | Wholesale & retail | 2024 |
| Karat Traders Ltd | Administrative & support | 2017 |
| Karel Food Ltd | Wholesale & retail | 2022 |
| Karen Barnes Consultancy Ltd | Professional & scientific | 2017 |
| Karl Deen International Ltd | Other services | 2018 |
| Karldtm Ltd | Construction | 2025 |
| Karma Printing Ltd | Manufacturing | 2011 |
| Karony Enterprise Ltd | Wholesale & retail | 2020 |
| Karpathia Limited | Wholesale & retail | 2014 |
| Kart Housing Limited | Financial services | 2017 |
| Kartham Holdings Ltd | Financial services | 2022 |
| Karts, Parts & Prep Limited | Wholesale & retail | 2019 |
| Kasgumma Cricket Club | Arts & recreation | 2026 |
| Kashif HC Ltd | Health & social care | 2018 |
| Kashkustoms Ltd | Wholesale & retail | 2025 |
| Kashmir Protection Limited | Administrative & support | 2023 |
| Kaskosan Limited | Other services | 2014 |
| Kasmir Advisory Limited | Professional & scientific | 2026 |
| Katawaz Ltd | Wholesale & retail | 2024 |
| Katherine Mcloughlin PA Ltd | Health & social care | 2022 |
| Katherine Rees Ltd | Health & social care | 2011 |
| Katie Ford Ltd | Wholesale & retail | 2018 |
| Kaushal Holdings Limited | Real estate | 2025 |
| Kawaru Co Ltd | Wholesale & retail | 2017 |
| KAY FOX Controls Limited | Manufacturing | 1991 |
| KAY Performance Ltd | Administrative & support | 2023 |
| Kay's Salon Ltd | Other services | 2026 |
| Kayash Limited | Wholesale & retail | 2025 |
| Kazmy Ltd | Real estate | 2026 |
| KBB Build & Design Ltd | Wholesale & retail | 2018 |
| KCB Storage Limited | Transport & logistics | 2016 |
| KCL Comprop Ltd. | Real estate | 2015 |
| KCL Healthcare Limited | Health & social care | 2010 |
| KCL Quality Services Ltd | Professional & scientific | 2024 |
| Kcollectables Ltd | Wholesale & retail | 2025 |
| Kctp Properties Limited | Real estate | 2024 |
| KCY Assets Limited | Real estate | 2021 |
| KDG Transport Limited | Transport & logistics | 2014 |
| KDH Accountancy Limited | Professional & scientific | 2019 |
| KDL Consulting (NW) Limited | Arts & recreation | 2016 |
| KDM Construction Limited | Construction | 2013 |
| Keating Civil Engineering Ltd | Construction | 2023 |
| Kebab Wingdom Ltd | Hospitality | 2025 |
| Kebabish House Oldham Ltd | Hospitality | 2023 |