| Whiting's Home Services Ltd | Administrative & support | 2022 |
| Whittaker Belvoir Limited | Construction | 2023 |
| Whittaker Cotgrave Ltd | Construction | 2023 |
| WHO Dares Wins (Alfreton) Ltd | Transport & logistics | 2009 |
| Wibb Builders Limited | Construction | 2015 |
| Wildlogicgames Ltd | Information & communication | 2018 |
| Wilkinson Bros Ltd | Other services | 2015 |
| Willis-Smith Development Ltd | Professional & scientific | 2023 |
| Willow Oak Ltd | Information & communication | 2015 |
| Willowbridge Services Ltd | Construction | 2026 |
| Wilson and Bear Company Limited | Professional & scientific | 2021 |
| Wilson Asset Management Solutions Ltd | Professional & scientific | 2014 |
| Wilson Housing Ltd | Real estate | 2020 |
| Winchester's Grimm Ltd | Manufacturing | 2023 |
| Wingfield Fencing Limited | Manufacturing | 2013 |
| Wingfield M and E Ltd | Construction | 2020 |
| Wingfield Mortgages Ltd | Financial services | 2020 |
| Wink Design Print & Promotions Limited | Manufacturing | 2016 |
| Wistanes Green (Wessington) Management Company Limited | Households | 2017 |
| WJB Consulting Ltd. | Professional & scientific | 2014 |
| WJB Welding & Fabrication Limited | Manufacturing | 2003 |
| WML98 Limited | Information & communication | 2024 |
| Wonderwhite (Alfreton) Limited | Administrative & support | 2015 |
| Woodland Walk Cafe Ltd | Hospitality | 2025 |
| Woodland Walk Day Care Ltd | Health & social care | 2025 |
| Woodpecker HR Ltd | Professional & scientific | 2025 |
| Woodside Grove C and C Ltd | Hospitality | 2026 |
| Woodward and Rodway Properties LLP | | 2012 |
| Woolley Moor Nurseries Limited | Wholesale & retail | 2003 |
| WRA Properties Ltd | Real estate | 2022 |
| Wren Travel Limited | Administrative & support | 2024 |
| Wright and SON Electrical Ltd | Construction | 2015 |
| Wright Choice Lettings & Developments Limited | Real estate | 2026 |
| Wycliff Services Limited | Manufacturing | 1994 |
| Xenon Advisory Limited | Information & communication | 2017 |
| XL Magnis Ltd | Manufacturing | 2015 |
| Yappl Limited | Information & communication | 2017 |
| YAY Property Ltd | Real estate | 2025 |
| Young & Sons Furniture Ltd | Manufacturing | 2022 |
| Young & Sons Investments Limited | Financial services | 2025 |
| Your Floor Store Limited | Wholesale & retail | 2022 |
| YS Foods Limited | Hospitality | 2019 |
| YUM Inn Limited | Hospitality | 2022 |
| ZA Building & Maintenance Ltd | Construction | 2024 |
| Zaxo Pizza Ltd | Hospitality | 2025 |
| Zaza Ripley Ltd | Hospitality | 2016 |
| Zebra Emporium Limited | Wholesale & retail | 2024 |
| Zeppelin PUB Company Ltd | Hospitality | 2011 |
| Ziggy's Salon Limited | Other services | 2007 |
| ZOE Crosby Financial Services Limited | Financial services | 2011 |
| Zycomm Electronics Limited | Information & communication | 1979 |