| Willowbrook Technical Services Limited | Arts & recreation | 2017 |
| Willy Nilly Brewing Company Limited | Extraterritorial | 2021 |
| Wilson & Bailey Limited | Wholesale & retail | 2001 |
| Wilson 55 Holdings Limited | Financial services | 2022 |
| Wilson Groundworks, Fencing & Landscaping Limited | Manufacturing | 2015 |
| Wilson&Button Ltd | Hospitality | 2025 |
| Wilsons Funeral Directors Ltd | Other services | 2025 |
| Wiluc Motors Limited | Wholesale & retail | 2025 |
| Wilvern Motorsport Limited | Manufacturing | 2019 |
| WIN TAI NSM Limited | Real estate | 2023 |
| WIN TAI Printing (UK) Ltd | Manufacturing | 2006 |
| Winchester Brothers Ltd | Construction | 2019 |
| Windermere Businesses Limited | Real estate | 2007 |
| Window Tech Advisory Ltd | Wholesale & retail | 2013 |
| Window Wizard Repairs Limited | Construction | 2014 |
| Window Wright Ltd | Professional & scientific | 2021 |
| Windsor Catering Ltd | Wholesale & retail | 2017 |
| Winfield Services Limited | Professional & scientific | 2016 |
| Winford Baxter Limited | Extraterritorial | 2025 |
| Wingelock Limited | Professional & scientific | 2006 |
| Winn Property Limited | Real estate | 2016 |
| Winnie Developments Ltd | Real estate | 2025 |
| Winning Installations Ltd | Construction | 2020 |
| Winopiq Ltd | Information & communication | 2026 |
| Winston Joinery Limited | Manufacturing | 2009 |
| Winterfield Kennels Limited | Arts & recreation | 2018 |
| Wira Limited | Professional & scientific | 2018 |
| Wireless Racer Limited | Professional & scientific | 2018 |
| Wirys 1STOP Ltd | Wholesale & retail | 2025 |
| Wisdom Consultants Ltd | Wholesale & retail | 2014 |
| Wisdom Holdings Limited | Financial services | 2023 |
| Wisdom Property Limited | Real estate | 2014 |
| Wisdom Property Management Limited | Real estate | 2020 |
| Wisdomnet Limited | Information & communication | 2004 |
| Wisp Global Limited | Professional & scientific | 2016 |
| Witch DAS Construction Ltd | Construction | 2017 |
| Without Walls Women International CIC | Education | 2021 |
| Witnall Automatics Limited | Arts & recreation | 1973 |
| Wizard Appliances Limited | Wholesale & retail | 2003 |
| Wizz's Wraps Ltd | Professional & scientific | 2020 |
| WJ Commercial Property Limited | Real estate | 2016 |
| WJ Commercial Property South West Limited | Real estate | 2016 |
| WJ Consultants Ltd | Professional & scientific | 2018 |
| WM Realisations 2025 Limited | Manufacturing | 1913 |
| Wm.Riley & Sons Limited | Wholesale & retail | 1946 |
| WMS Elite Limited | Real estate | 2022 |
| WMS Properties Limited | Real estate | 2019 |
| WN Towing Ltd | Wholesale & retail | 2025 |
| WNL Solutions Ltd | Construction | 2026 |
| WNZ Enterprise Limited | Wholesale & retail | 2021 |
| WOBBLE5389 Ltd | Extraterritorial | 2017 |
| Wolfstack Property Ventures Ltd | Real estate | 2025 |
| Wolfx Auto Care Limited | Wholesale & retail | 2025 |
| Wolstanton Hardware Limited | Real estate | 2022 |
| WOM Automotive Limited | Wholesale & retail | 2013 |
| Women of the Year Luncheon and Awards Ltd | Professional & scientific | 2004 |
| Wonder LUX Beauty Limited | Other services | 2023 |
| Wonderlandart Ltd | Wholesale & retail | 2025 |
| Wonders of GOD Services Ltd | Wholesale & retail | 2025 |
| Wong & Sing Ltd | Hospitality | 2025 |
| Wood Bank Hall Enterprises Limited | Hospitality | 2020 |
| Wood Goldstraw Limited | Professional & scientific | 2023 |
| Wood Goldstraw Yorath Holdings Limited | Financial services | 2026 |
| Wood Joinery Ltd | Construction | 2022 |
| Woodall Technical Services Ltd | Manufacturing | 2018 |
| Woodberry Stores Ltd | Wholesale & retail | 2017 |
| Woodcock Welding and Fabrications Limited | Manufacturing | 2026 |
| Wooden Hill Homes Limited | Real estate | 2021 |
| Woodford Gray Group Ltd | Administrative & support | 2022 |
| Woodland Village Ltd | Hospitality | 2024 |
| Woodlyn Construction Ltd | Construction | 2023 |
| Woodrow Warmth Holdings Ltd | Real estate | 2025 |
| Woodrow Warmth UK Ltd | Construction | 2015 |
| Woods Construction Ltd | Construction | 2021 |
| Woods Quality Menswear Limited | Wholesale & retail | 2015 |
| Woodside Management (Oakamoor) Company Limited | Real estate | 2018 |
| Woodward Commercial Services Ltd | Construction | 2025 |
| Woodward Electrical Contractors Ltd | Construction | 2024 |
| Woodward Plumbing & GAS Services Ltd | Manufacturing | 2012 |
| Woolliscroft Psychotherapy Ltd | Health & social care | 2023 |
| Woomarts Ltd | Wholesale & retail | 2021 |
| Wopad Limited | Health & social care | 2018 |
| Wordbeams Limited | Information & communication | 2021 |
| Work LYF Group Limited | Administrative & support | 2017 |
| Work LYF Holdings Limited | Financial services | 2020 |
| Work Stay Ltd | Households | 2020 |
| Workforce Employment Limited | Administrative & support | 1972 |
| Workwise Software Ltd | Information & communication | 2025 |
| World Life Assets Ltd | Construction | 2024 |
| Worldview Group Ltd | Information & communication | 2025 |
| WPD Property Lettings Ltd | Real estate | 2026 |
| WPS Group Ltd | Construction | 2021 |
| WR Automotive Ltd | Wholesale & retail | 2024 |
| WR Fire & Security Limited | Extraterritorial | 2022 |
| WRC MOT & Repair Centre Ltd | Wholesale & retail | 2021 |
| Wren Goods Ltd | Wholesale & retail | 2020 |
| Wren Lloyd Ltd | Health & social care | 2026 |
| Wright & Ravenscroft Ltd | Construction | 2021 |
| Wright Consultancy Services Limited | Financial services | 2006 |
| Wright Operations Ltd | Wholesale & retail | 2022 |