| Wharf Commercial Limited | Real estate | 2024 |
| Whatevarents Ltd | Administrative & support | 2019 |
| White Hart Manor Estates Ltd | Real estate | 2024 |
| White Rose Acquisitions Ltd | Real estate | 2025 |
| WHITEBOARD2WEBSITE Limited | Information & communication | 2010 |
| Whitecroft Indian Restaurant Ltd | Hospitality | 2022 |
| Whiteheads Property Ltd | Real estate | 2026 |
| Whitewolfart Ltd | Arts & recreation | 2023 |
| Whittaker's Butchers Limited | Wholesale & retail | 1946 |
| Whittakers Cars & Commercials Ltd | Wholesale & retail | 2024 |
| Whittakers Transport Ltd | Transport & logistics | 2018 |
| Whizz Onic Limited | Wholesale & retail | 2024 |
| Whmedical Limited | Health & social care | 2025 |
| Why-Us? Marketing Software Ltd | Professional & scientific | 2025 |
| Wiizard Group Ltd | Professional & scientific | 2025 |
| Wild Soul Grove Ltd | Other services | 2025 |
| Wilde & ME Ltd | Education | 2023 |
| Wiles Properties Ltd | Real estate | 2022 |
| Wilk Bakery Limited | Manufacturing | 2025 |
| Wilkins Holdings Group Limited | Financial services | 2024 |
| Willow Healthcare NW Limited | Wholesale & retail | 2011 |
| Willzet Limited | Financial services | 2020 |
| Wilwork Ltd | Information & communication | 2010 |
| Windermere Joinery Limited | Construction | 2025 |
| Wish Upon a Teepee Ltd | Arts & recreation | 2025 |
| Witch Group Limited | Wholesale & retail | 1989 |
| WJ & DA Rhodes Limited | Agriculture & fishing | 2020 |
| Wolfie Enterprise's Ltd | Hospitality | 2023 |
| Wolfx Ltd | Manufacturing | 2023 |
| Woodnook Convenience Ltd | Wholesale & retail | 2024 |
| Woody (Hyndburn) C.I.C. | Agriculture & fishing | 2012 |
| Woollatt and Clarke Consulting Ltd | Professional & scientific | 2019 |
| Work Point Motors Ltd | Wholesale & retail | 2017 |
| World Education Ltd | Education | 2026 |
| Worldvale 2000 Limited | Real estate | 1997 |
| Worldvale Properties Ltd | Real estate | 2020 |
| WPC Global Limited | Wholesale & retail | 2025 |
| WPC Trading Limited | Wholesale & retail | 2024 |
| WR Coding Limited | Information & communication | 2018 |
| WR Pharma Ltd | Health & social care | 2022 |
| WRA Transport Ltd | Transport & logistics | 2026 |
| Wright 22 Limited | Professional & scientific | 2012 |
| WVS Trading Limited | Wholesale & retail | 2020 |
| WXY Glory Ltd | Hospitality | 2024 |
| Wyvern Pharma Ltd | Wholesale & retail | 2014 |
| X5 AJT Limited | Professional & scientific | 2010 |
| Xappee Ltd | Wholesale & retail | 2014 |
| Xaris Investments Limited | Administrative & support | 2005 |
| Xpertsrus Ltd | Professional & scientific | 2025 |
| Y & H Investments Ltd | Financial services | 2018 |
| Yalla Toum Ltd | Hospitality | 2025 |
| Yankeezkebabs Ltd | Hospitality | 2026 |
| Yarni’S Ltd | Hospitality | 2025 |
| Yarrow Convenience Store Ltd | Wholesale & retail | 2025 |
| Yeates Car and Commercial Ltd | Wholesale & retail | 2010 |
| Yellowsleeve Ltd | Administrative & support | 2022 |
| YM Properties NW Limited | Real estate | 2025 |
| Ynot Aspire Limited | Arts & recreation | 2012 |
| Yolo Desserts Ltd | Hospitality | 2025 |
| Yorkshire Trading Solutions Ltd | Wholesale & retail | 2019 |
| Your Away Days Ltd | Information & communication | 2025 |
| Your Home Trades Ltd | Professional & scientific | 2025 |
| Your Retreats Ltd | Manufacturing | 2022 |
| Yourchoice Send Residentials Ltd | Health & social care | 2018 |
| Youturn Consulting Limited | Professional & scientific | 2025 |
| Yuki Apparel Ltd | Wholesale & retail | 2026 |
| Yummyz Desserts Ltd | Hospitality | 2025 |
| Z&M PH Associates Limited | Health & social care | 2023 |
| ZAK Wholesale Tyres Ltd | Wholesale & retail | 2023 |
| Zakher Ltd | Transport & logistics | 2025 |
| Zaknzak Ltd | Real estate | 2015 |
| Zara Home Living Ltd | Real estate | 2025 |
| Zech Couriers Ltd | Transport & logistics | 2025 |
| Zend Construction Ltd | Construction | 2018 |
| Zenith Holdings UK Limited | Professional & scientific | 2001 |
| Zenith Store Ltd | Wholesale & retail | 2026 |
| Zenthread Ltd | Wholesale & retail | 2024 |
| Zibaq Private Limited | Financial services | 2025 |
| Zimcart Ltd | Wholesale & retail | 2026 |
| Zimpli Medical Limited | Manufacturing | 2016 |
| Zitzen Properties Ltd | Construction | 2023 |
| ZOE Whittaker Ltd | Health & social care | 2022 |
| Zohaib and Co Accrington Ltd | Hospitality | 2026 |
| ZRH Estates Ltd | Households | 2024 |
| Zulu House Film & Television Ltd | Arts & recreation | 2022 |