| Wensley Roofing Limited | Construction | 1996 |
| Werio Ltd | Transport & logistics | 2026 |
| West Coach Limited | Information & communication | 2012 |
| West END Musical Theatre Company Limited | Arts & recreation | 2012 |
| West House Asset Management Limited | Construction | 2017 |
| West House Holdings Limited | Professional & scientific | 2024 |
| West House UK Ltd | Information & communication | 2007 |
| West Lakes Fine Foods Limited | Wholesale & retail | 2014 |
| West Road Eyecare Ltd | Health & social care | 2017 |
| Westcountry Enterprises Limited | Real estate | 2018 |
| Westcountry Ventures Limited | Extraterritorial | 2018 |
| Western Grange Residents Management Company Limited | Households | 2024 |
| Westfield House Nursery Limited | Education | 2025 |
| Westfield Lodge Freehold Limited | Households | 2018 |
| Westhorpe North Limited | Professional & scientific | 2026 |
| Westline Roofing Services Limited | | 1973 |
| Westmorland House (Management) Limited | Households | 2003 |
| Westmount DS Ltd | Financial services | 2015 |
| Westoe Estates Ltd | Real estate | 2023 |
| Westray Recruitment Consultants (Tyneside) Limited | Administrative & support | 1998 |
| Westray Recruitment Consultants Limited | Administrative & support | 1990 |
| Westray Recruitment Group Limited | Administrative & support | 1998 |
| Westrop Product Management Ltd | Information & communication | 2018 |
| Westway Developments (North East) Limited | Real estate | 2007 |
| WEY AYE MAN Rope Access Ltd | Manufacturing | 2010 |
| Weymouth Dent Ltd | Health & social care | 2020 |
| Wezan Group Ltd | Construction | 2025 |
| WFD Property Limited | Real estate | 2022 |
| WH002 Limited | Other services | 2025 |
| WH2022 Limited | Energy | 2022 |
| WH2022 LN Ltd | Other services | 2025 |
| WH2026 Ltd | Other services | 2025 |
| Wham (Newcastle) Ltd | Professional & scientific | 2019 |
| Whas Estates Ltd | Real estate | 2017 |
| What's My Attendance Limited | Information & communication | 2026 |
| Wheelhouse Commercial Limited | Professional & scientific | 2020 |
| Whickham Parochial Pre-School Limited | Education | 2017 |
| Whickham Wraparound & Holiday Club Ltd | Health & social care | 2025 |
| Whin Sill Property Ltd | Real estate | 2025 |
| Whinfell Property Investments Ltd | Real estate | 2026 |
| Whinney House Limited | Health & social care | 2000 |
| Whinney House Management Company Limited | Other services | 2014 |
| Whistles & Breeze Ltd | Real estate | 2025 |
| White Oaks Healthcare Management Limited | Professional & scientific | 2025 |
| White Oaks Living Ltd | Health & social care | 2021 |
| White Oaks Lodge Ltd | Health & social care | 2021 |
| White Oaks Village Ltd | Health & social care | 2021 |
| White PAW Productions Ltd | Arts & recreation | 2022 |
| White Willow Person Centred Therapy Limited | Health & social care | 2024 |
| Whitedene Ltd | Real estate | 2024 |
| Whitehall Road Management (NE) Ltd | Households | 2006 |
| Whitehalluk Ltd | Real estate | 2013 |
| Whitemond Estates Limited | Real estate | 2023 |
| Whites Paving & Brickwork's Ltd | Construction | 2026 |
| Whitley Bay Ltd | Real estate | 2019 |
| Whitley Bay Properties Limited | Real estate | 2014 |
| WHM Investments Limited | Agriculture & fishing | 2023 |
| Whne Energy Solutions Ltd | Construction | 2017 |
| Whtn Leisure Limited | Hospitality | 2026 |
| Widnes Car Centre (1994) Limited | Extraterritorial | 1981 |
| Widnes Car Centre Limited | Extraterritorial | 1986 |
| Wild Bear Designs Ltd | Professional & scientific | 2024 |
| Wild Plum Solutions Limited | Information & communication | 2022 |
| Wildcard Holdings Ltd | Wholesale & retail | 2025 |
| Wildcat Films Limited | Arts & recreation | 1989 |
| Wilde Developments Ltd | Construction | 2024 |
| Wildebeest Commercial Ltd | Professional & scientific | 2019 |
| Wildenenergy Ltd | Construction | 2024 |
| Willaw Limited | Financial services | 2025 |
| Willbe Energy Limited | Construction | 2025 |
| William George Investments Limited | Administrative & support | 2022 |
| William Hynes Energistics Limited | Other services | 2021 |
| William Hynes Global Cables Limited | Wholesale & retail | 2024 |
| William Hynes Group Limited | Other services | 2021 |
| Willigby Property Limited | Real estate | 2021 |
| Willmore Construction Ltd | Construction | 2020 |
| Willow Home Management Limited | Households | 2019 |
| Wilson Haulage Ltd | Transport & logistics | 2009 |
| Wilsons Lane Management Company Limited | Households | 2009 |
| Winbright Cleaning Limited | Administrative & support | 2025 |
| Windmere Ltd | Real estate | 2023 |
| Windows Plus Roofs Ltd | Construction | 2018 |
| Windy Nook Fabrications Ltd | Manufacturing | 2024 |
| Winners Edge Ltd | Professional & scientific | 2019 |
| Winter Shows Limited | Arts & recreation | 2023 |
| Winvestment Services Ltd | Households | 2022 |
| Wiper Blades Limited | Extraterritorial | 2005 |
| Wiseline Interior Linings Limited | Construction | 2003 |
| Wisemere Limited | Real estate | 2017 |
| Wisteria Property Solutions Limited | Real estate | 2025 |
| Witcraft PR Ltd | Professional & scientific | 2025 |
| Witka Ltd | Health & social care | 2016 |
| Witton Court Management Company Limited | Real estate | 2015 |
| WJ Plastering & Drylining Services Limited | Construction | 2015 |
| WLD Records Ltd | Information & communication | 2025 |
| WMG Consultants Limited | Administrative & support | 2012 |
| Wobbly Aleways Ltd | Hospitality | 2023 |
| Wobbly Duck Ltd | Hospitality | 2016 |
| Wobbly Duckling Ltd | Hospitality | 2017 |
| Wolfgang Capital LLP | | 2019 |