| WJL Group Limited | Financial services | 2015 |
| Wjwl Engineering Ltd | Other services | 2016 |
| WKL Training Ltd | Administrative & support | 2023 |
| Woburn (Eco) Limited | Construction | 2023 |
| Woburn Mechanical Services Ltd | Energy | 2011 |
| Woburn Sands (Eco) Limited | Real estate | 2024 |
| WOO Consulting Limited | Financial services | 2023 |
| WOO Estates Limited | Real estate | 2026 |
| Wood Reloved Ltd | Manufacturing | 2022 |
| Woodham Ferrers Ltd | Administrative & support | 2022 |
| Woodhaust Projects Ltd | Construction | 2022 |
| Woodhead Enterprise Limited | Real estate | 2013 |
| Woodhead Regeneration Ltd | Construction | 2003 |
| Woodhouse Carpentry and Joinery Ltd | Manufacturing | 2021 |
| Woodhouse Mill Ltd | Administrative & support | 2022 |
| Woodhouse Property Group Ltd | Real estate | 2025 |
| Woodhouse Timber&Fencing Ltd | Wholesale & retail | 2026 |
| Woods & Willow Ltd. | Administrative & support | 2021 |
| Woods Accounting and Consulting Limited | Professional & scientific | 2024 |
| Woodstock Homes Limited | Real estate | 2024 |
| Woodsview Properties Ltd | Other services | 2021 |
| Woof-Audio Ltd | Wholesale & retail | 2015 |
| Woolville Alpacas Ltd | Wholesale & retail | 2020 |
| Woope Creative Limited | Administrative & support | 2019 |
| Wordworcs Limited | Professional & scientific | 2022 |
| Work Healthcare Limited | Health & social care | 2022 |
| Work Quality Services Limited | Extraterritorial | 2006 |
| Workforce Skills Support Ltd | Administrative & support | 2017 |
| Worksop Workspace Ltd | Real estate | 2023 |
| Workwear-Ppe Nottingham Ltd | Wholesale & retail | 2015 |
| World Padel Academy (WPA) Ltd | Arts & recreation | 2022 |
| World Physiques Gym & Physio Clinic Ltd | Arts & recreation | 2020 |
| World Wide Web (UK) Limited | Information & communication | 1996 |
| Worldwide Truck Racing Ltd | Arts & recreation | 2024 |
| Worthington Welding & Agriculture Ltd | Manufacturing | 2021 |
| Worthingtons of Mansfield Limited | Construction | 2024 |
| Wortley Brothers Wooden Gates Limited | Manufacturing | 2019 |
| Wortley Holdings Limited | Financial services | 2022 |
| WPR Services Ltd | Other services | 2019 |
| Wraith.Graphics Limited | Professional & scientific | 2015 |
| Wright & Fernandez Properties Ltd | Real estate | 2024 |
| Wright Clenton Limited | Real estate | 1975 |
| Wright Property Investment Group Limited | Real estate | 2021 |
| Wright Sports Media Limited | Information & communication | 2017 |
| Wrights Garage (Shirebrook) Limited | Wholesale & retail | 2025 |
| WS Canton Limited | Hospitality | 2017 |
| WSG Joinery Limited | Construction | 2014 |
| Wudhus Limited | Information & communication | 2016 |
| Wykin Convenience Limited | Wholesale & retail | 2020 |
| WZN Limited | Transport & logistics | 2019 |
| Xanthosed Ltd | Wholesale & retail | 2021 |
| Xceed Training Limited | Education | 2006 |
| Xclusiv Hair & Beauty Ltd | Other services | 2025 |
| Xibit Jewellery Limited | Wholesale & retail | 2012 |
| Xpert Electrical & Property Innovations Ltd | Construction | 2020 |
| Xtreme Electrical Contractors Limited | Construction | 2008 |
| Y8 Home Farm Limited | Wholesale & retail | 2018 |
| Yana Derby Ltd | Wholesale & retail | 2023 |
| Yana-Hari Limited | Wholesale & retail | 2026 |
| Yang Cheng Ltd | Wholesale & retail | 2023 |
| Yardleys Vehicle Repair & Test Centre Limited | Wholesale & retail | 2001 |
| Yatesey Entrance Systems Limited | Manufacturing | 2013 |
| YB Distribution Ltd | Wholesale & retail | 2025 |
| Yellow Music Ltd | Information & communication | 2012 |
| Yellowboard Ltd | Information & communication | 2022 |
| YES Property Ltd | Real estate | 2024 |
| Yiamas Ltd | Wholesale & retail | 2026 |
| YK1PRO Limited | Wholesale & retail | 2018 |
| YKX 1 Ltd | Wholesale & retail | 2024 |
| Yllw Investments Limited | Real estate | 2026 |
| Yogi Wave Consulting Ltd | Information & communication | 2017 |
| Yolre Limited | Information & communication | 2023 |
| Yonita Marcelo Ltd | Construction | 2022 |
| York Apple LLP | | 2011 |
| York Solar Ltd | Energy | 2026 |
| Yorkshire PUB Foods Limited | Hospitality | 2008 |
| YOT Construction Ltd | Construction | 2024 |
| YOU Have IT Limited | Education | 2011 |
| Your Best Supplement Limited | Hospitality | 2023 |
| Your Embroidery Services Limited | Wholesale & retail | 1994 |
| Your Home Care Group Limited | Health & social care | 2020 |
| Your Home Consoles World Ltd | Wholesale & retail | 2021 |
| Your Legacy Matters Ltd | Financial services | 2015 |
| Your Legacy Matters Storage and Aftercare Ltd. | Professional & scientific | 2017 |
| Your Property Management Limited | Real estate | 2014 |
| Your Sport Solutions Limited | Administrative & support | 2022 |
| Your-Next-Door Limited | Administrative & support | 2008 |
| YU Martial Arts Limited | Arts & recreation | 2022 |
| Yummy Jiang 2026 Ltd | Hospitality | 2026 |
| Yumsing (Mansfield) Limited | Hospitality | 2024 |
| YZY Corp Limited | Health & social care | 2026 |
| Zabcia Mansfield Limited | Wholesale & retail | 2019 |
| Zabka Fresh Food Ltd | Wholesale & retail | 2026 |
| Zanova Solutions Limited | Information & communication | 2025 |
| Zara and Zubair Corporation Ltd | Wholesale & retail | 2026 |
| Zarak and Company Limited | Health & social care | 2018 |
| Zarytrans Ltd | Transport & logistics | 2015 |
| Zaza Barbers Enterprise Ltd | Other services | 2023 |
| Zaza Properties Limited | Real estate | 2023 |
| Zbigniew Transport Ltd | Transport & logistics | 2019 |