| Yama (Batley) Ltd | Hospitality | 2025 |
| Yaqoob Healthcare Ltd | Health & social care | 2024 |
| Yasry Ltd | Real estate | 2024 |
| YAY Investments Ltd | Financial services | 2022 |
| YBP Properties Limited | Real estate | 2025 |
| YBS Holdings Limited | Construction | 2006 |
| YCB Ltd | Administrative & support | 2026 |
| YED Ltd | Transport & logistics | 2026 |
| Ymode Ltd | Wholesale & retail | 2025 |
| Yorem Turkish Restaurant Ltd | Hospitality | 2018 |
| Yorkshire Autos Ltd | Wholesale & retail | 2019 |
| Yorkshire Beds (MN) Ltd | Manufacturing | 2026 |
| Yorkshire Beds Ltd | Manufacturing | 2026 |
| Yorkshire Building Services Holdings Limited | Financial services | 2021 |
| Yorkshire Building Services Limited | Construction | 1992 |
| Yorkshire Car HUT Limited | Wholesale & retail | 2022 |
| Yorkshire Care Services Ltd | Health & social care | 2019 |
| Yorkshire Carpets Morley Ltd | Wholesale & retail | 2018 |
| Yorkshire Catering & Equipment Ltd | Other services | 2026 |
| Yorkshire Catering Butchers Ltd | Wholesale & retail | 2024 |
| Yorkshire Clearance Services Ltd | Water & waste | 2026 |
| Yorkshire Components Limited | Wholesale & retail | 2014 |
| Yorkshire Components UK Ltd | Wholesale & retail | 2022 |
| Yorkshire Dales Building Consultancy Ltd | Administrative & support | 2009 |
| Yorkshire Dental Spa Ltd | Health & social care | 2024 |
| Yorkshire Fabric Shop Limited | Wholesale & retail | 2020 |
| Yorkshire Fantasy Beds Ltd | Manufacturing | 2020 |
| Yorkshire Fasteners Ltd | Wholesale & retail | 2019 |
| Yorkshire Flat Roofing Specialist Limited | Construction | 2022 |
| Yorkshire Flooring Supplies Limited | Wholesale & retail | 2006 |
| Yorkshire Home Services Ltd | Construction | 2020 |
| Yorkshire Laser Ltd | Other services | 2018 |
| Yorkshire Light Commercials Ltd | Wholesale & retail | 2018 |
| Yorkshire Medical Supplies Limited | Wholesale & retail | 2015 |
| Yorkshire Memorabilia Limited | Wholesale & retail | 2020 |
| Yorkshire Muddings Ltd | Education | 2026 |
| Yorkshire Neurosurgical Spine Clinic Ltd | Health & social care | 2024 |
| Yorkshire Property Rentals Limited | Real estate | 2016 |
| Yorkshire Rose Engineering Limited | Professional & scientific | 2022 |
| Yorkshire Spray Tech Ltd | Construction | 2022 |
| Yorkshiregiftbox Limited | Wholesale & retail | 2025 |
| Yorkshirehqbeds Ltd | Manufacturing | 2025 |
| Young Goat Ltd | Wholesale & retail | 2025 |
| Young Lions Cricket Championship Ltd | Education | 2025 |
| Younis Rail Services Limited | Construction | 2017 |
| Your Bottom Line Ltd | Wholesale & retail | 2004 |
| Your Brand Partner Yorkshire Limited | Manufacturing | 2021 |
| Your Mattress Stop Ltd | Manufacturing | 2026 |
| Youth BEY Ltd | Wholesale & retail | 2023 |
| YPS Lettings Ltd | Real estate | 2021 |
| YSL Trading Ltd | Wholesale & retail | 2021 |
| YUM in a Box Limited | Hospitality | 2025 |
| Yusaf Entertainment Exchange Limited | Wholesale & retail | 2013 |
| Yvoiresavoie Ltd | Wholesale & retail | 2025 |
| Z.E.X. (Yorkshire) Ltd | Wholesale & retail | 2007 |
| ZA Cleaners Ltd | Other services | 2023 |
| Zaalsh Ltd | Health & social care | 2015 |
| Zabtaa Ltd | Wholesale & retail | 2025 |
| Zabtaa Traders Limited | Wholesale & retail | 2025 |
| Zain Holdings Limited | Professional & scientific | 2016 |
| Zainab Khawaj Ltd | Wholesale & retail | 2023 |
| Zainy Store Ltd | Wholesale & retail | 2026 |
| Zak's Driving School Ltd | Education | 2025 |
| ZAM ZAM Catering Ltd | Hospitality | 2024 |
| Zamanoptics Limited | Public administration | 2025 |
| ZAP Motors UK Ltd | Wholesale & retail | 2023 |
| ZAP Performance Ltd | Wholesale & retail | 2023 |
| ZAQ Trans Ltd | Transport & logistics | 2017 |
| Zecko Furniture Limited | Wholesale & retail | 2021 |
| Zeeshan Holdings Ltd | Real estate | 2024 |
| ZEM Properties Ltd | Construction | 2016 |
| Zenith Beds Ltd | Manufacturing | 2019 |
| ZEX Properties Limited | Real estate | 2020 |
| ZF CV Distribution UK Limited | Manufacturing | 1961 |
| Zfkk Ltd | Wholesale & retail | 2022 |
| Ziba Yara Limited | Health & social care | 2023 |
| Zippy Hand Car Wash & Valeting Ltd | Wholesale & retail | 2026 |
| ZM Commerce Ltd | Wholesale & retail | 2023 |
| ZN Eco Solutions Ltd | Construction | 2025 |
| Zneon Ltd | Wholesale & retail | 2024 |
| Zoha's Shine Ltd | Wholesale & retail | 2025 |
| Zoom Scaffolding Yorkshire Limited | Construction | 2025 |
| Zoya Living Ltd | Manufacturing | 2022 |
| Zoyara Events Ltd | Administrative & support | 2026 |
| ZQ Bespoke Ltd | Manufacturing | 2025 |
| ZR Training Ltd | Arts & recreation | 2025 |
| ZRM Trading Ltd | Wholesale & retail | 2023 |
| ZSR Ltd | Transport & logistics | 2012 |
| Zuha Limited | Real estate | 2018 |
| Zwift Properties Ltd | Real estate | 2020 |