| White Lion Global Ltd | Professional & scientific | 2018 |
| White Lion Trading & Clearing Ltd | Wholesale & retail | 2021 |
| White Tiger Coaching Ltd | Professional & scientific | 2023 |
| Whitefield Blue Limited | Administrative & support | 2010 |
| Whitehead Historical Research Services Limited | Professional & scientific | 2014 |
| Whitehouse Hand Tools Limited | Manufacturing | 2015 |
| Whiting Architects Limited | Professional & scientific | 2014 |
| Whitnash Carpets and Flooring Ltd | Wholesale & retail | 2016 |
| Whittaker Associates (Worcestershire) Limited | Administrative & support | 2002 |
| Whittaker Associates Limited | Administrative & support | 2012 |
| Whittle Productions CIC | Arts & recreation | 2022 |
| Whoosh & Blah ....Limited | Other services | 2001 |
| Whyte Design Limited | Professional & scientific | 2011 |
| Wick Technology Ltd | Information & communication | 2018 |
| Wicked Cookies Bakery Ltd | Manufacturing | 2019 |
| Wicked Cookies Ltd | Hospitality | 2018 |
| Wickham Growth Consultancy Limited | Professional & scientific | 2024 |
| Wight Waves Holidays Limited | Hospitality | 2019 |
| Wiglesworth & Co Limited | Real estate | 2015 |
| Wigman Professional Services Limited | Administrative & support | 2014 |
| Wilbert and Hermon Ltd | Professional & scientific | 1997 |
| Wilbest Engineering Company Limited | Manufacturing | 1965 |
| Wild Ocean Designs Ltd | Wholesale & retail | 2021 |
| Wild Violet Limited | Wholesale & retail | 2020 |
| Wildfireworks Limited | Professional & scientific | 2005 |
| Wildflower Ventures Ltd | Manufacturing | 2022 |
| Wilhelmina Limited | Wholesale & retail | 2021 |
| Wilkinson JPM Ltd | Real estate | 2022 |
| Will George Ltd | Wholesale & retail | 2022 |
| Will Rent for Beer Limited | Real estate | 2024 |
| Willes Court Management Company Limited | Households | 1972 |
| Williams and Yemm Limited | Real estate | 2017 |
| Williams Cook Limited | Administrative & support | 2010 |
| Williams Investments (Midlands) Limited | Real estate | 2018 |
| Williams Urology Ltd. | Health & social care | 2021 |
| Williamson Sabine Ltd | Real estate | 2025 |
| Willmaker Direct Limited | Professional & scientific | 2001 |
| Willoughbee Properties Ltd | Real estate | 2025 |
| Willow Design Associates Ltd | Professional & scientific | 2019 |
| Wilson Financial Modelling Limited | Professional & scientific | 2018 |
| Wilson's Road Limited | Construction | 2022 |
| WIN Your Dream Ltd | Wholesale & retail | 2025 |
| Windhurst Consultants Limited | Information & communication | 2000 |
| Windhurst Investments Ltd | Real estate | 2005 |
| Windmill Farming Limited | Financial services | 2012 |
| Windmill Hill Brewing Co. Ltd. | Manufacturing | 2017 |
| Windmill House Racing Ltd | Arts & recreation | 2023 |
| Windmill House Thoroughbred Ltd | Professional & scientific | 2021 |
| Window Warm Limited | Construction | 2010 |
| Winlock Security Limited | Manufacturing | 1987 |
| Winson Takeaway Ltd | Hospitality | 2024 |
| Wintage Limited | Wholesale & retail | 2024 |
| Wired and Wireless Technologies Ltd | Professional & scientific | 2020 |
| Wiseglare Ltd | Wholesale & retail | 2017 |
| Wiseman Lettings Management Ltd | Real estate | 2020 |
| Wisla Delikatesy Ltd | Wholesale & retail | 2020 |
| Wisuals Limited | Professional & scientific | 2022 |
| With Gratitude Ltd | Information & communication | 2023 |
| WJ Hampton Ltd | Real estate | 2018 |
| WK Creative Limited | Information & communication | 2020 |
| WKS Group Ltd | Real estate | 2021 |
| Wlkpqs Ltd | Professional & scientific | 2018 |
| WLW Group Limited | Construction | 2018 |
| Wolston Finance Limited | Construction | 2014 |
| Wood & Sons (Properties) Limited | Real estate | 2012 |
| Wood Brook Training Solutions Ltd | Education | 2023 |
| Wood Lane Residential Limited | Construction | 2023 |
| Woodberry of Leamington Spa Ltd | Manufacturing | 2021 |
| Woodbine Street Recording Studios Limited | Arts & recreation | 1988 |
| Woodcote Flats Management Company Limited | Households | 1991 |
| Woodland Road 1957 Limited | Extraterritorial | 2014 |
| Woodley & Sons Co. Ltd | Real estate | 2022 |
| Woodley Limited | Financial services | 2018 |
| Woodrose Developments Limited | Construction | 2009 |
| Woodwinds Property Investments Limited | Real estate | 2002 |
| Woodyserve Limited | Construction | 2024 |
| Wool Warehouse Direct Limited | Wholesale & retail | 2012 |
| Wool Warehouse Group Limited | Financial services | 2024 |
| Wootton Consulting Ltd | Professional & scientific | 2023 |
| Wootton Link Limited | Real estate | 1970 |
| Woottons Surveying Limited | Administrative & support | 2013 |
| Word Properties Ltd | Real estate | 2015 |
| Working Data Ltd | Information & communication | 2025 |
| Workwear Supply Co. Ltd | Wholesale & retail | 2026 |
| Worldwide PRODUCTS1 Ltd | Wholesale & retail | 2023 |
| Worm Company Ltd | Professional & scientific | 2024 |
| WPC Catering Ltd | Manufacturing | 2017 |
| WPH Wealth Management Limited | Professional & scientific | 2024 |
| WPR Engineering Ltd | Professional & scientific | 2026 |
| Wrapculture Ltd | Manufacturing | 2025 |
| Wrenvale Limited | Extraterritorial | 2016 |
| Wright and Wild Limited | Wholesale & retail | 2025 |
| Wrightkind Consultancy Limited | Agriculture & fishing | 2025 |
| Wrightkind Limited | Financial services | 2025 |
| Wrightkind Livestock Limited | Agriculture & fishing | 2025 |
| Wrights Farming Partnership Limited | Agriculture & fishing | 2016 |
| Wunsen Music Ltd | Arts & recreation | 2024 |
| Wunsen Showcase Ltd | Arts & recreation | 2024 |
| Wuzo Holdings Ltd | Information & communication | 2025 |
| Wychwood & Cotswolds Ltd | Wholesale & retail | 2021 |