| Whit-T-Chem Limited | Professional & scientific | 2011 |
| Whitby Pyop Studio Limited | Arts & recreation | 2020 |
| Whitcrom Electrical Contractors Limited | Construction | 2003 |
| White Coppice Nursery Limited | Education | 2009 |
| White Energi Limited | Manufacturing | 2022 |
| White House Studios Limited | Information & communication | 2007 |
| White Investments (NW) Limited | Professional & scientific | 2011 |
| White Label Sinks and Taps Ltd | Wholesale & retail | 2010 |
| White Oak Motors Ltd | Wholesale & retail | 2020 |
| White's Management Consultancy LLP | | 2011 |
| Whitebear Adlington Limited | Hospitality | 2026 |
| Whitemerc Ltd | Transport & logistics | 2024 |
| Whites AS Ltd | Arts & recreation | 2017 |
| Whitewell Holdings Limited | Financial services | 2020 |
| Whittakers Same Day Delivery Ltd | Transport & logistics | 2017 |
| Whittinghamadvisory Limited | Professional & scientific | 2026 |
| Whittington Goddard Associates Ltd | Financial services | 2003 |
| Whittle Bookkeeping & Accountancy Ltd | Professional & scientific | 2022 |
| Whittle Business Services Limited | Administrative & support | 2012 |
| Whittle Consulting Limited | Professional & scientific | 2012 |
| Whittle Draughting Services Limited | Professional & scientific | 2013 |
| Whittle Estates Limited | Construction | 2012 |
| Whittle Property Group Limited | Real estate | 2025 |
| Whittle Shaw Ltd. | Administrative & support | 2019 |
| Whittle Springs Accountancy Ltd | Professional & scientific | 2018 |
| Whittle-Le-Woods Community Hall Trust | Arts & recreation | 1999 |
| Wholehealth.Clinic Ltd | Health & social care | 2017 |
| Wholesale Budget Flooring Limited | Wholesale & retail | 2011 |
| WHS Safety Solutions Limited | Extraterritorial | 2013 |
| Whye Ltd | Professional & scientific | 2021 |
| Wickbury Limited | Administrative & support | 2023 |
| Wigan Education Development Ltd | Administrative & support | 2018 |
| Wigan MS Therapy Centre Ltd | Other services | 2003 |
| Wiggleworks Playspace Ltd | Arts & recreation | 2021 |
| Wilbur International Limited | Transport & logistics | 2015 |
| Wilcock Construction Ltd | Construction | 2021 |
| Wild About Security Limited | Administrative & support | 2015 |
| Wild Bricks Limited | Real estate | 2024 |
| Wild Five Enterprises Limited | Financial services | 2017 |
| Wild Weather Ales Ltd | Manufacturing | 2012 |
| Wilde Paws Ltd | Agriculture & fishing | 2026 |
| Wildmoor (Hull) Limited | Real estate | 2004 |
| Wildwood Days CIC | Education | 2019 |
| Wilko Productions Ltd | Administrative & support | 2025 |
| Williamsco Ltd | Wholesale & retail | 2020 |
| Williamsondennis Ltd | Hospitality | 2014 |
| Willisconsultancy Ltd | Professional & scientific | 2025 |
| Willow and Sage Bridal Limited | Wholesale & retail | 2022 |
| Willow House Day Nursery Limited | Education | 2007 |
| Willow Tree Bespoke Joinery Ltd | Professional & scientific | 2017 |
| Willow Tree Studio Ltd | Professional & scientific | 2026 |
| Wills Mining Ltd | Information & communication | 2021 |
| Willtom Properties Limited | Households | 2018 |
| Wilmott Rentals Limited | Real estate | 2022 |
| Wilson Property Holdings Ltd | Real estate | 2020 |
| Windance Ltd | Wholesale & retail | 2019 |
| Windcrest Technical Limited | Professional & scientific | 2007 |
| Windover Worm Counts Ltd | Administrative & support | 2025 |
| Window Spray UK Ltd | Other services | 2018 |
| Windowcraft Limited | Construction | 2012 |
| Wingham Wyatt Financial Advisers Limited | Extraterritorial | 2002 |
| Wingham Wyatt Group Ltd | Extraterritorial | 2003 |
| Winners Enclosure Limited | Information & communication | 2022 |
| Winning Networks Limited | Professional & scientific | 2010 |
| Winstanley Flooring Limited | Other services | 2018 |
| Winstanley Haulage Ltd | Transport & logistics | 2026 |
| Wintel Ltd | Information & communication | 2025 |
| Winterblue Limited | Administrative & support | 2005 |
| Wiserr Ltd | Professional & scientific | 2020 |
| With Love by Anisa Ltd | Construction | 2020 |
| Withnell Car Sales Limited | Wholesale & retail | 2015 |
| Withnell Fold Management Company Limited | Households | 1996 |
| Withnell Fold Millennium Green Limited | Administrative & support | 2011 |
| Withnell Motor Works Ltd | Wholesale & retail | 2025 |
| Witney Winners Ltd | Arts & recreation | 2023 |
| Wizard Computer Services Limited | Information & communication | 1989 |
| WJH Lifting Ltd | Professional & scientific | 2026 |
| WKP Property's Limited | Real estate | 2024 |
| WLD Solutions Ltd | Transport & logistics | 2018 |
| WM1 Ltd | Construction | 2022 |
| WMB Interiors Ltd | Construction | 2024 |
| Wmdc Building Contractors Ltd | Construction | 2025 |
| WMS Holdings Ltd | Wholesale & retail | 2019 |
| Woldale Angling Club Ltd | Agriculture & fishing | 2024 |
| Wolf Green Properties Ltd | Hospitality | 2025 |
| Wolfpk Ltd | Hospitality | 2020 |
| Wonderwall Creations Limited | Extraterritorial | 2021 |
| Wonderwall Direct Limited | Extraterritorial | 2021 |
| Wonderwall Franchises Limited | Administrative & support | 2021 |
| Wonderwall Global Limited | Extraterritorial | 2021 |
| Wood Fairy Dust Ltd | Manufacturing | 2014 |
| Wood Fairy Ltd. | Manufacturing | 2010 |
| Wood Lane Garage (Group) Limited | Wholesale & retail | 1943 |
| Woodchats Limited | Hospitality | 2025 |
| Woodcock Residential Lettings Limited | Real estate | 2012 |
| Woodeaves Residential Limited | Health & social care | 2026 |
| Woodfield Gardens Private Road Limited | Households | 2022 |
| Woodgate Electrical Services Limited | Construction | 2005 |
| Woodhead Tree Services Ltd | Agriculture & fishing | 2026 |
| Woodhill Farm NW Ltd | Wholesale & retail | 2022 |