| Whoscity International Limited | Information & communication | 2017 |
| Whyte Pyramid Academy Limited | Education | 2026 |
| Wick P Invest Limited | Financial services | 2025 |
| Wick Topco Limited | Financial services | 2023 |
| Wickerable Ltd | Wholesale & retail | 2025 |
| Wicks Homes Limited | Real estate | 2026 |
| Wide Media Ltd | Information & communication | 2024 |
| Wiehag UK Limited | Manufacturing | 2016 |
| Wift-Tech UK Limited | Information & communication | 2019 |
| Wiin Ltd | Professional & scientific | 2016 |
| Wije Homes Ltd | Real estate | 2019 |
| Wilcotts Ltd | Real estate | 2025 |
| Wild at Heart Dog Boarding Ltd | Agriculture & fishing | 2024 |
| Wild Brain Ltd | Information & communication | 2026 |
| Wild ERB Limited | Administrative & support | 2021 |
| Wild Fusion Foods Ltd | Hospitality | 2019 |
| Wild WE Stand CIC | Education | 2025 |
| Wild Within Coaching Ltd | Education | 2026 |
| Wildbite Ltd | Manufacturing | 2024 |
| Wildflower Orchard Management Limited | Households | 2023 |
| Wildhome Digital Ltd | Information & communication | 2025 |
| Wildlife Mamma Limited | Manufacturing | 2002 |
| Wildways Education CIC | Education | 2026 |
| Wildwood Tipis Ltd | Hospitality | 2026 |
| Wildye Limited | Information & communication | 2022 |
| Wilect Limited | Construction | 2012 |
| Will I GET in Limited | Information & communication | 2026 |
| Will Jefferies Carpentry Limited | Manufacturing | 2022 |
| Willett House Vets Limited | Professional & scientific | 2013 |
| William Anderson Consulting Limited | Information & communication | 2023 |
| William Elliott Limited | Education | 2018 |
| William Francis Specialist Cars Limited | Wholesale & retail | 2014 |
| William Marcel Limited | Construction | 2002 |
| Williams Work Solutions Limited | Administrative & support | 2025 |
| Williamson Plant Services Ltd | Professional & scientific | 2025 |
| Willow & Riverstone Ltd | Construction | 2025 |
| Willow & Riverstone Sidelands CIC | Agriculture & fishing | 2025 |
| Willow 1959 Limited | Extraterritorial | 2015 |
| Willow Acres Ltd | Manufacturing | 2026 |
| Willow Brickwork Limited | Construction | 2025 |
| Willow Court (New Brighton) Management Company Ltd | Households | 2004 |
| Willow Tree Kids Care Limited | Health & social care | 2023 |
| Willowbridge Labels Limited | Manufacturing | 1992 |
| Willowserve Limited | Construction | 1991 |
| Willowstate Ltd | Real estate | 2024 |
| Willowtree Care Ltd | Professional & scientific | 2018 |
| Willtheypay Limited | Administrative & support | 2023 |
| Willvoice.It Ltd | Arts & recreation | 2026 |
| Wilson & Clarke Limited | Manufacturing | 2025 |
| Wilson & Wilson Homes Ltd | Construction | 2025 |
| Wilson Blanc Holdings Limited | Financial services | 2026 |
| Wilson Blanc Limited | Professional & scientific | 2026 |
| Wilson Connectivity Ltd | Information & communication | 2025 |
| Wilson Homes & Developments Ltd | Construction | 2023 |
| Wilson Wraight LLP | | 2020 |
| WIN With Shaw Ltd | Arts & recreation | 2026 |
| Winam Services Limited | Administrative & support | 2024 |
| Wine Selection Ltd | Administrative & support | 2012 |
| Winfield Homes Ltd | Construction | 2018 |
| Winforreal Ltd | Wholesale & retail | 2026 |
| Wing Chun Street Defence Limited | Arts & recreation | 2013 |
| Wingate Commercial Advisory Ltd | Professional & scientific | 2026 |
| Winslow Stark Consultancy Ltd | Information & communication | 2025 |
| Winslow Trading Co., Ltd | Wholesale & retail | 2026 |
| Winthrop Consultancy Services Limited | Construction | 2017 |
| Winway Estate Limited | Real estate | 2024 |
| Wirebits Ltd | Information & communication | 2022 |
| Wisdom Education BD Ltd | Education | 2022 |
| Wisdomventures Ltd | Wholesale & retail | 2023 |
| Wise Owls Club Limited | Health & social care | 2006 |
| Wise Owls DN Limited | Health & social care | 2022 |
| Wisest Management Services Ltd | Professional & scientific | 2015 |
| Wisewiser Technologies Ltd. | Information & communication | 2023 |
| Wiseword Pro Ltd | Information & communication | 2025 |
| Wishsight Limited | Agriculture & fishing | 1983 |
| Wisper Digital Limited | Information & communication | 2019 |
| Wissey Water Limited | Water & waste | 2000 |
| Wistaria Valley Ltd | Real estate | 2024 |
| Wisteria Frutescens Ltd | Wholesale & retail | 2024 |
| With Gather Ltd | Information & communication | 2025 |
| Wivertown Ltd | Real estate | 2025 |
| Wiwo Limited | Professional & scientific | 2013 |
| Wizard Balloons Limited | Arts & recreation | 2003 |
| WJM Accounting Limited | Professional & scientific | 2002 |
| WJS SG Limited | Hospitality | 2023 |
| Wliya Ltd | Wholesale & retail | 2025 |
| Wlwsc Limited | Arts & recreation | 2018 |
| Wnhh Ltd | Agriculture & fishing | 2021 |
| Wnman Ltd | Real estate | 2023 |
| Wobbly Socials CIC | Health & social care | 2024 |
| Wolby Ltd | Wholesale & retail | 2024 |
| Wolf TCG Ltd | Wholesale & retail | 2025 |
| Wolfpixel Ltd | Professional & scientific | 2023 |
| Wolfstone Digital Ltd | Professional & scientific | 2026 |
| Wolves Traders Limited | Wholesale & retail | 2024 |
| Wonderful Things Creative Studio Limited | Professional & scientific | 2024 |
| Wonderfully Yours Ltd | Wholesale & retail | 2024 |
| Wonderworld Investments Ltd | Real estate | 2021 |
| Woobart Ltd | Agriculture & fishing | 2021 |
| Wood Wellness CIC | Education | 2025 |