| Yalcin Ashford Ltd | Hospitality | 2024 |
| Yalcin Catering Ltd | Hospitality | 2025 |
| Yalina Limited | Health & social care | 2022 |
| Yashoram Consultancy Limited | Information & communication | 2015 |
| Yasmine's Cabin Retreat Limited | Real estate | 2026 |
| Yates Aviation Limited | Transport & logistics | 2017 |
| Yaywol Limited | Administrative & support | 2023 |
| Yb's Assets Limited | Real estate | 2025 |
| Yellocations Limited | Information & communication | 2013 |
| Yelloroo International Limited | Professional & scientific | 2018 |
| Yelloroo Ltd | Wholesale & retail | 2017 |
| Yellow Brick Training Ltd | Education | 2019 |
| Yellow Crescent Limited | Hospitality | 2023 |
| Yellow Parrot Properties Ltd | Real estate | 2024 |
| Yellow Train Ltd | Financial services | 2015 |
| Yepp Limited | Information & communication | 2024 |
| Yeti Homes Ashford Limited | Real estate | 2024 |
| YEW Tree Farm Events Ltd | Hospitality | 2026 |
| YEW Tree Futures Ltd | Education | 2026 |
| YG Construction and Maintenance Ltd | Construction | 2015 |
| Ygtbkm Ltd | Wholesale & retail | 2024 |
| YHT 2018 Ltd | Manufacturing | 2017 |
| Yieldradius LLP | | 2025 |
| Yigithan 68 Ltd | Hospitality | 2026 |
| Yiosa Bosty Limited | Public administration | 2021 |
| Yisza Ltd | Professional & scientific | 2025 |
| YLD Agency Limited | Information & communication | 2023 |
| YML Holdings Ltd | Professional & scientific | 2011 |
| YNM Consulting Limited | Professional & scientific | 2013 |
| Yockley Aqua Fitness Ltd | Arts & recreation | 2024 |
| Yogo Smart Ltd | Professional & scientific | 2016 |
| Yolat Inc Ltd | Professional & scientific | 2025 |
| York Mews (Woking) Management Company Limited | Households | 2009 |
| YOU Mind YOU Matter Ltd | Extraterritorial | 2022 |
| You'Ve Been Cleaned Limited | Administrative & support | 2015 |
| Young Reporter Scheme Limited | Education | 2019 |
| Your Business Assist Limited | Construction | 2008 |
| Your Car Zone Ltd | Wholesale & retail | 2023 |
| Your Choice Express Limited | Wholesale & retail | 2023 |
| Your Cleaning Solutions Ltd | Administrative & support | 2021 |
| Your Confidant Limited | Health & social care | 2025 |
| Your Heat Pump Cover UK Ltd | Construction | 2025 |
| Your Kentish Ltd | Information & communication | 2022 |
| Your Security Limited | Administrative & support | 2019 |
| Your Service Zone Ltd | Wholesale & retail | 2024 |
| Your Space Exteriors Limited | Construction | 2022 |
| Your Transformation Global Ltd | Professional & scientific | 2024 |
| Yourdraft AI Ltd | Information & communication | 2025 |
| Yours Transport Limited | Transport & logistics | 2024 |
| Youth Consulting Ltd | Education | 2020 |
| Youth Empowerment Services CIC | Education | 2015 |
| Yuka Company Limited | Real estate | 2021 |
| Yuma Hair & Beauty Limited | Other services | 2020 |
| Yummy Chinese Kent Ltd | Hospitality | 2023 |
| Yunus Ltd | Hospitality | 2012 |
| Yuzurai Ltd | Health & social care | 2025 |
| YV Osteopathy Limited | Financial services | 2025 |
| Yvintage Ltd | Other services | 2020 |
| YY Investments Kent Limited | Construction | 2023 |
| Z&N Consulting Limited | Information & communication | 2022 |
| Z135 Construction Limited | Construction | 2025 |
| Zacharia Properties Limited | Real estate | 2019 |
| Zacs Bonsai Limited | Wholesale & retail | 2003 |
| Zahra Property Management Limited | Real estate | 2023 |
| Zak&Co International Ltd | Wholesale & retail | 2022 |
| Zak's Kombucha Ltd | Manufacturing | 2023 |
| Zamana Ltd | Wholesale & retail | 2021 |
| Zambur Ltd | Manufacturing | 2020 |
| Zantara Services Ltd | Wholesale & retail | 2026 |
| Zapcad Ltd | Extraterritorial | 2020 |
| Zartex Limited | Extraterritorial | 2016 |
| Zasada Solutions Ltd | Construction | 2019 |
| Zask Property Claims Limited | Other services | 2022 |
| Zatheo Ltd | Information & communication | 2019 |
| Zayaanmotors Ltd | Wholesale & retail | 2025 |
| Zayfa Ltd | Hospitality | 2025 |
| Zaza Marketing Ltd | Professional & scientific | 2015 |
| ZDF Property Investments Limited | Real estate | 2022 |
| Zeal Film Ltd | Information & communication | 2011 |
| Zebrabarber Ltd | Other services | 2020 |
| ZED Consulting Limited | Professional & scientific | 2023 |
| Zedko Limited | Professional & scientific | 2007 |
| Zelir Logistics Ltd | Transport & logistics | 2023 |
| Zeltus Technologies Ltd | Information & communication | 2017 |
| Zenith Domes Ltd | Wholesale & retail | 2025 |
| Zenith Glamping Ltd | Hospitality | 2026 |
| Zenith Workforce Solutions Ltd. | Administrative & support | 2016 |
| Zennorflor Limited | Construction | 2022 |
| Zentaum Limited | Real estate | 2022 |
| Zentium Limited | Information & communication | 2012 |
| Zenvs Ltd | Health & social care | 2024 |
| Zenwik Logistics Ltd | Transport & logistics | 2024 |
| Zero FOX Given Kent Ltd | Other services | 2026 |
| Zero.Msh Ltd | Information & communication | 2026 |
| Zerobatics Ltd | Professional & scientific | 2024 |
| Zerohero Drinks Company Limited | Wholesale & retail | 2020 |
| Zest INT Limited | Information & communication | 2014 |
| Zest Signature Limited | Health & social care | 2022 |
| Zestsell Ltd | Information & communication | 2024 |
| Zeyses Ltd | Real estate | 2026 |