| Westlake Property Investments Limited | Real estate | 2020 |
| Westminster Gardens (the Cedars) Residents Company Limited | Households | 2001 |
| Westminster Gardens (the Sycamores) Residents Company Limited | Households | 2000 |
| Westpoint (Castlefield) Management Company Limited | Households | 2001 |
| Westwood Business Support Limited | Information & communication | 2023 |
| Westwood Core Services Recruitment CIC | Administrative & support | 2026 |
| Westwood Park Limited | Households | 1981 |
| WGH UK Holdings Limited | Professional & scientific | 2003 |
| WGH UK Limited | Professional & scientific | 2003 |
| Wharf Road (Ellesmere) Management Company Limited | Households | 2014 |
| Wharfedale Park Management Company Limited | Households | 2014 |
| Whats My Injury Ltd | Health & social care | 2022 |
| Wheat-In Ltd | Hospitality | 2008 |
| Wheatsheaf Sports PUB Limited | Hospitality | 2013 |
| Wheelabrator Group Limited | Manufacturing | 1891 |
| Wheelabrator Technologies (UK) Limited | Professional & scientific | 1987 |
| Whelley Sports and Community Limited | Hospitality | 2022 |
| Which Media Limited | Professional & scientific | 2003 |
| White Canvas Studios Limited | Administrative & support | 2015 |
| White Coil Limited | Administrative & support | 2002 |
| White Cross Rubber Finance Limited | Financial services | 2025 |
| White Cross Rubber Group Holdings Limited | Financial services | 2025 |
| White Diamond Cosmetics Ltd | Wholesale & retail | 2025 |
| White Hot PPM Ltd | Real estate | 2023 |
| White Logic Solutions Ltd | Information & communication | 2012 |
| White Peak Planning Limited | Professional & scientific | 2012 |
| White Rock Rose Limited | Professional & scientific | 2011 |
| Whitecroft Group Limited | Construction | 2016 |
| Whitefield Holdings Limited | Financial services | 2018 |
| Whitefield Insurance Services Limited | Financial services | 2005 |
| Whitehall Academy Ltd | Education | 2024 |
| Whiteman Bell Wealth Limited | Financial services | 2025 |
| Whiteplains Limited | Administrative & support | 2018 |
| Whitespace Furniture Ltd | Wholesale & retail | 2024 |
| Whitestake Electrical Limited | Construction | 2009 |
| Whittle Site Management Limited | Administrative & support | 2011 |
| Whitton Property Ltd | Real estate | 2019 |
| Whitworth Legal Services Limited | Professional & scientific | 2023 |
| Whole Brain Planning Ltd | Professional & scientific | 2011 |
| Whop UK Private Limited | Wholesale & retail | 2025 |
| Whozaround Ltd | Information & communication | 2026 |
| WHY Wait Wedding Chapel Ltd | Real estate | 2026 |
| Whydle Design Services Limited | Professional & scientific | 2015 |
| Wicked WAX Ltd | Other services | 2014 |
| Wideavenue Limited | Real estate | 2005 |
| Wigan Training North West Limited | Education | 2018 |
| Wiggy 9 Ltd | Arts & recreation | 2011 |
| WIGGY9 Investments Limited | Real estate | 2017 |
| Wigs Couture and Extentions Limited | Wholesale & retail | 2025 |
| Wild Roots Education Ltd | Education | 2025 |
| Wilder House Creative Limited | Professional & scientific | 2025 |
| Wildflower Psychology Limited | Professional & scientific | 2023 |
| Wildgoose Developments Limited | Real estate | 2004 |
| Wildsky Ltd | Wholesale & retail | 2023 |
| Wilform Construction Ltd | Construction | 2016 |
| Wilke Global Limited | Administrative & support | 2007 |
| Wilks & Partners Limited | Professional & scientific | 2001 |
| Will and Jade Ltd | Health & social care | 2022 |
| Willem Developments Ltd | Hospitality | 2018 |
| Willen Field Road Ltd | Financial services | 2025 |
| William Giles Group Limited | Financial services | 2023 |
| William MAN Limited | Administrative & support | 2018 |
| Williams (GB) Limited | Wholesale & retail | 2004 |
| Williams Builders & Roofers Ltd | Construction | 2026 |
| Williams Quality Specialists Limited | Professional & scientific | 2021 |
| Williams Tanker Services Limited | Wholesale & retail | 1995 |
| Willow Hotels Limited | Hospitality | 1996 |
| Willow Tree Day Nursery (Sale) Limited | Education | 2019 |
| Willow Tree Pre-School Limited | Education | 2015 |
| Willowacre Investments and Developments Ltd. | Administrative & support | 2003 |
| Willowbank Residents Management Company Limited | Households | 2003 |
| Willowcrest Consulting Limited | Professional & scientific | 2024 |
| Willowmere Kafe Ltd | Hospitality | 2026 |
| Willows Tree & Garden Services Ltd | Administrative & support | 2021 |
| WILLS1 Limited | Real estate | 2025 |
| Wilmslow PP Limited | Real estate | 2010 |
| Wilmslow Studio and Salon Group Limited | Other services | 2023 |
| Wilson Peacock Estate Agents Limited | Professional & scientific | 2010 |
| Wilson Service Management Limited | Professional & scientific | 2026 |
| WILSON2 Consulting Limited | Administrative & support | 2010 |
| WIN Future Ltd | Professional & scientific | 2025 |
| Winckley Square GP Limited | Health & social care | 2023 |
| Wincontracting Limited | Professional & scientific | 2018 |
| Windart Ventures Ltd | Administrative & support | 2017 |
| Window Retrofit Limited | Construction | 2023 |
| Window-Pro Window Cleaning Limited | Administrative & support | 2023 |
| Windowpro Exterior Cleaning Limited | Administrative & support | 2022 |
| Windsor Court (Hyde) Management Company Limited | Households | 2004 |
| Windstar Cruises UK Ltd | Administrative & support | 2025 |
| Wing Hing Ltd | Real estate | 2022 |
| Wing Sing 888 Ltd | Hospitality | 2023 |
| Wing WAH Delight Ltd | Hospitality | 2026 |
| Wink Lash Bar (Hale) Limited | Other services | 2019 |
| Winlex Travel Ltd | Administrative & support | 2025 |
| Winshark Ltd | Wholesale & retail | 2024 |
| Winsland Consulting Limited | Professional & scientific | 2019 |
| Winston Nguyen Limited | Wholesale & retail | 2019 |
| Winwin Coaching Limited | Professional & scientific | 2022 |
| Wiolis Limited | Real estate | 2025 |
| Wire Apps Limited | Information & communication | 2021 |