| Watson House Builds Ltd | Construction | 2022 |
| Watts Farm Services Limited | Agriculture & fishing | 2011 |
| Wavves Ltd | Real estate | 2022 |
| WBB Consultants Ltd | Construction | 2025 |
| WBG Transport Ltd | Transport & logistics | 2017 |
| WDA Pipework Services Ltd | Construction | 2023 |
| WE Drive Recruitment Ltd | Transport & logistics | 2016 |
| WE FIX 24-7 Ltd | Households | 2026 |
| WE FIX ANY Ltd | Construction | 2023 |
| WE Need to BE Limited | Information & communication | 2026 |
| WE Takeaway Ltd | Hospitality | 2025 |
| WE Value ADD Ltd | Wholesale & retail | 2019 |
| We'Ll LET Your House Ltd | Real estate | 2019 |
| Weathertek Limited | Construction | 2019 |
| Weave & Wear Ltd | Wholesale & retail | 2025 |
| Web Centre Plus Limited | Information & communication | 2009 |
| Web DEN Ltd | Information & communication | 2016 |
| Webuki Ltd | Wholesale & retail | 2011 |
| Wecandid Limited | Information & communication | 2023 |
| Welbeck Independent Training Services Ltd | Energy | 2025 |
| Well Step Medical Ltd | Health & social care | 2025 |
| Welland & Glen Home Care Ltd | Health & social care | 2017 |
| Welland Brewery Ltd | Manufacturing | 2018 |
| Welland BUS Tours Limited | Wholesale & retail | 2019 |
| Welland Flooring Limited | Wholesale & retail | 2026 |
| Welland Gym (Spalding) Ltd | Arts & recreation | 2024 |
| Welland Hire Ltd | Administrative & support | 2020 |
| Welland Homes Limited | Construction | 2015 |
| Welland Marketing Limited | Information & communication | 2012 |
| Welland Plumbing & Heating Ltd | Construction | 2015 |
| Welland Power Limited | Manufacturing | 2010 |
| Welland Stores (2018) Ltd | Wholesale & retail | 2018 |
| Welland Transport Limited | Transport & logistics | 2011 |
| Welland Workspace Ltd | Extraterritorial | 2021 |
| Wellknown Accountancy Ltd | Professional & scientific | 2023 |
| Wellness by ML Ltd | Other services | 2026 |
| Wells Tarpaulins Limited | Manufacturing | 2005 |
| WEN Housing and Management Ltd | Households | 2017 |
| Wendy Fernandez Ltd | Extraterritorial | 2024 |
| Wendy Madeline Fernandez Limited | Extraterritorial | 2024 |
| West Norfolk Developments Limited | Health & social care | 2017 |
| Westbourne Holdings (Spalding) Ltd | Real estate | 2020 |
| Westhorpe Developments Ltd | Construction | 2019 |
| Westhorpe Farming Limited | Agriculture & fishing | 1998 |
| Westmere Developments Ltd | Financial services | 2019 |
| Weston Distribution Limited | Transport & logistics | 2014 |
| Westonvs Limited | Wholesale & retail | 2019 |
| Westside Timber (Services) Limited | Wholesale & retail | 2007 |
| Wesy Ltd | Professional & scientific | 2024 |
| WF PAY Ltd | Administrative & support | 2026 |
| Whaplode Car Wash Ltd | Administrative & support | 2022 |
| Whaplode Manor Ltd | Hospitality | 2025 |
| Whaplode Playing Field Association Limited | Arts & recreation | 2012 |
| What the Big Idea Ltd | Administrative & support | 2023 |
| Whenman Ltd | Manufacturing | 2018 |
| Whiskey Throttle Limited | Wholesale & retail | 2023 |
| White Eagle Cultural and Development Centre CIC | Education | 2024 |
| White Gates Puppy Palace Limited | Agriculture & fishing | 2018 |
| White House Chambers Management Company Limited | Households | 2004 |
| White Motors Recovery Ltd | Wholesale & retail | 2025 |
| White Properties (Boston) Ltd | Real estate | 2025 |
| Whitegate Stables Ltd | Transport & logistics | 2019 |
| Whiterose Care Limited | Health & social care | 2022 |
| Whites Building and Construction Limited | Construction | 2024 |
| Whites Environmental Limited | Water & waste | 2014 |
| Whittlesey Car and Van Sales Ltd Ltd | Wholesale & retail | 2025 |
| Wicked Inflatables Ltd | Administrative & support | 2025 |
| Wignals Wood Management Company Limited | Households | 2019 |
| Wilcare Co. Limited | Wholesale & retail | 2000 |
| Wild Fantasy Joinery Ltd | Manufacturing | 2026 |
| Wild Vine Ltd | Wholesale & retail | 2025 |
| Wiljo Holdings Limited | Financial services | 2023 |
| Wilkins Chimney Sweep Franchising Limited | Administrative & support | 2024 |
| Will the Tree MAN Ltd | Agriculture & fishing | 2021 |
| William Foster & Co Limited | Manufacturing | 1998 |
| William Marshal Holdings Limited | Professional & scientific | 2024 |
| Williamgreen Property Ltd | Real estate | 2023 |
| Williams Travel Ltd | Transport & logistics | 2018 |
| Willoughby Data Busters Ltd | Extraterritorial | 2026 |
| Willoughby Genius Ltd | Extraterritorial | 2026 |
| Willow Court Management Company (Spalding) Ltd | Households | 2024 |
| Willow Croft (East Anglia) Limited | Construction | 2025 |
| Willow Tree Potatoes Limited | Transport & logistics | 1991 |
| Willowgate Finance Ltd | Financial services | 2019 |
| Willowgate Trout & Salmon Fishery Limited | Agriculture & fishing | 2009 |
| Willows Childcare Limited | Health & social care | 2011 |
| Wilsdon Way Limited | Real estate | 2016 |
| Wilson Builders Ltd | Construction | 2012 |
| Wilson Capital Estates Ltd | Construction | 2026 |
| Wilson Construction & Groundworks Limited | Construction | 2012 |
| Wilson Dental Laboratory Limited | Health & social care | 2006 |
| Wilsons Park Homes Ltd | Construction | 2021 |
| Winchester Square Properties Limited | Real estate | 2000 |
| Windcatch Caravan Park Limited | Hospitality | 2005 |
| Windohaus Ltd | Manufacturing | 2024 |
| WINDOW2DOOR Limited | Construction | 2019 |
| Wink Engineering Ltd | Manufacturing | 2014 |
| Winner Trans Ltd | Transport & logistics | 2021 |
| Winters Lane Energy Limited | Energy | 2018 |
| Winters Lane Storage (2018) Limited | Transport & logistics | 2018 |