| White & Sons Logistics (London) Limited | Professional & scientific | 2003 |
| White & TAN Ltd | Real estate | 2026 |
| White Acre Wood Ltd | Real estate | 2025 |
| White Pearl Group Ltd | Financial services | 2024 |
| White Pearl Holdings Ltd | Wholesale & retail | 2015 |
| White Rose Properties (Saddleworth) Limited | Real estate | 1948 |
| White Sakura Limited | Hospitality | 2019 |
| White Wall Clothing Company Limited | Wholesale & retail | 2019 |
| Whitefield Coffee Shop Ltd | Hospitality | 2018 |
| Whitegate and Crompton Limited | Professional & scientific | 1995 |
| Whitehead Land & Securities Limited | Real estate | 2017 |
| Whiteley Eaves (Holdings) Ltd | Financial services | 2021 |
| Whiteline 5000 Ltd | Administrative & support | 2016 |
| Whiteoak (NW) Ltd | Administrative & support | 2012 |
| Whitesmiles Promotions Ltd | Health & social care | 2010 |
| Whitestone Furniture Ltd | Wholesale & retail | 2022 |
| Whitfield Dairy Farm Limited | Agriculture & fishing | 2000 |
| Whitworth Building Limited | Construction | 2004 |
| Whitworth Housing Ltd | Real estate | 2016 |
| Whitworth Park Properties Ltd | Financial services | 2022 |
| Whitworth Property Rentals Ltd | Real estate | 2024 |
| Whizz Courier Services Ltd | Transport & logistics | 2022 |
| Wickens Developments Limited | Construction | 2017 |
| Wickens Estates Limited | Real estate | 2017 |
| Widdop & Co (Holdings) Limited | Financial services | 2022 |
| Wide Care Limited | Health & social care | 2019 |
| Widecare UK Limited | Extraterritorial | 2019 |
| Wiggett Construction Group Limited | Professional & scientific | 1998 |
| Wilaye Ltd | Wholesale & retail | 2024 |
| Wilberry Developments Limited | Real estate | 2014 |
| Wilco Estates Limited | Real estate | 2019 |
| Wilco Investments Ltd | Real estate | 2025 |
| Wilco Plumbing Commercial Limited | Construction | 2021 |
| Wild & Griffiths Ltd | Real estate | 2014 |
| Wild and Brierley Limited | Other services | 1997 |
| Wild and Form Digital Ltd | Professional & scientific | 2017 |
| Wild Developments Limited | Administrative & support | 2021 |
| Wild Forest School Limited | Health & social care | 2025 |
| Wild Ochre Consulting Ltd | Professional & scientific | 2017 |
| Wild Strawberry Uppermill Limited | Wholesale & retail | 2022 |
| Wild Things Performing Arts CIC | Education | 2020 |
| Wildbore Greene Properties Limited | Real estate | 2026 |
| Wilde Automotive Limited | Wholesale & retail | 2020 |
| Wilde Contracts Limited | Construction | 2005 |
| Wilde Property Developments Ltd | Construction | 2020 |
| Wilde Ventures Limited | Wholesale & retail | 2020 |
| Wilkinson Brickwork Ltd | Construction | 2019 |
| Willandco Limited | Financial services | 2019 |
| Willerby Bedroom & Kitchen Design Limited | Manufacturing | 2016 |
| William Alistair Limited | Transport & logistics | 2021 |
| William Anthony Hairdressing Ltd | Other services | 2007 |
| William ASH Ltd | Arts & recreation | 2012 |
| William Chadderton Holdings Limited | Real estate | 2022 |
| William H Bonney Ltd | Other services | 2020 |
| William Mccall Architectural Services Limited | Professional & scientific | 2016 |
| Williams CM Ltd | Health & social care | 2009 |
| Williams SFE Ltd | Construction | 2023 |
| Willmer Road (Birkenhead) Management Limited | Households | 2023 |
| Willow Boutique (NW) Ltd | Wholesale & retail | 2025 |
| Willow Lane Gardens & Landscapes Ltd | Administrative & support | 2023 |
| Willow Meadow Residential Limited | Health & social care | 2025 |
| Willow Tree Connections Ltd | Construction | 2024 |
| Willow Tree Construction Group Ltd | Construction | 2024 |
| Willow Tree Landscaping & Maintenance Limited | Administrative & support | 2017 |
| Willow Tree Scaffolding Ltd | Construction | 2024 |
| Willowbank Management Company Limited | Hospitality | 1988 |
| Willscaff Limited | Construction | 2007 |
| Willymax Limited | Health & social care | 2022 |
| Wilmot Homes Ltd | Real estate | 2018 |
| Wilson Building&Joinery Ltd | Construction | 2025 |
| Wilson Landscapes Driveways & Paving Limited | Administrative & support | 2020 |
| Wilson Parks Limited | Hospitality | 2011 |
| Wiltonhill Ltd | Hospitality | 2009 |
| WIM Logistics Ltd | Transport & logistics | 2025 |
| Wimberry Ventures Limited | Information & communication | 2015 |
| WIN Big for Less Ltd | Arts & recreation | 2020 |
| WIN OUR House Ltd | Administrative & support | 2024 |
| Windoorsuk Ltd | Construction | 2026 |
| Windy Tree Ventures Limited | Professional & scientific | 2012 |
| Wine With Jimmy Limited | Education | 2019 |
| Wing Runner Limited | Hospitality | 2026 |
| Wing Sing Ltd | Hospitality | 2020 |
| Wingchase Limited | Administrative & support | 2000 |
| Wings Assets Unlimited | Real estate | 2015 |
| Wings Chinese Food Ltd | Hospitality | 2024 |
| Winners Care Limited | Health & social care | 2020 |
| Winos Limited | Wholesale & retail | 2003 |
| Winsford Roofing Ltd | Construction | 2026 |
| Winsford Vehicle Sales Limited | Wholesale & retail | 2020 |
| Winters Medical Ltd | Health & social care | 2024 |
| Winton Square Ltd | Real estate | 2019 |
| Winton Technical Services Ltd | Arts & recreation | 2013 |
| Wire Cart Ltd | Wholesale & retail | 2024 |
| Wired for Film Ltd | Construction | 2025 |
| Wise Wear Shop Ltd | Wholesale & retail | 2025 |
| Wise Wolf Security Services PVT Ltd | Other services | 2019 |
| Wiser Corporation Limited | Hospitality | 2022 |
| Wishing Moon Ltd | Other services | 2002 |
| Wishy Washy Limited | Wholesale & retail | 2025 |
| Wiszniewski Milk and Cream Production Ltd | Manufacturing | 2025 |