| Weaver ROW Associates Limited | Extraterritorial | 2016 |
| Web Gear Ltd | Information & communication | 2010 |
| Web Wise Digital Ltd | Information & communication | 2025 |
| Web-Hoster Ltd. | Information & communication | 2000 |
| Webbercare Limited | Health & social care | 2021 |
| Webbit Studio Ltd | Information & communication | 2025 |
| Webfinity Studio Limited | Professional & scientific | 2026 |
| Webiwise Ltd | Wholesale & retail | 2023 |
| Weblinea Ltd | Information & communication | 2017 |
| Webnovation Digital Ltd | Information & communication | 2026 |
| Webplus Ltd | Information & communication | 2023 |
| Webpr Limited | Wholesale & retail | 2022 |
| Websatpro Ltd | Information & communication | 2018 |
| Webstars Ltd | Information & communication | 2003 |
| Websters Militaria Ltd | Wholesale & retail | 2025 |
| Webxxs Services Ltd | Professional & scientific | 2026 |
| Weddings Abroad Ltd | Other services | 2021 |
| Wedjosse Ltd | Education | 2025 |
| Weekend Wayne Limited | Wholesale & retail | 2026 |
| Weekes Weekly Cleans Ltd | Administrative & support | 2025 |
| Wefix NE Tech Ltd | Other services | 2025 |
| Wefixdem Limited | Information & communication | 2017 |
| Weflatpack Ltd | Wholesale & retail | 2024 |
| Wehelpyoumoveit Limited | Transport & logistics | 2016 |
| Welbeck Accountants Limited | Professional & scientific | 2008 |
| Weld-Fab Stage Engineering Limited | Professional & scientific | 1991 |
| Well Done Entertainment Ltd | Information & communication | 2024 |
| Wellbeing 4 U Limited | Health & social care | 2019 |
| Wellness Therapies Limited | Health & social care | 2017 |
| Wellnotes Ltd | Information & communication | 2019 |
| Wellq Ltd | Health & social care | 2025 |
| Wellspring Private GP Services Limited | Health & social care | 2023 |
| Wellwear Socks Ltd | Wholesale & retail | 2025 |
| Wenguard Limited | Wholesale & retail | 2026 |
| Wentwood Sport Ltd | Arts & recreation | 2020 |
| Wentworth Financial Services Limited | Information & communication | 2007 |
| Wertyworld Limited | Information & communication | 2025 |
| Wesleycare Limited | Health & social care | 2013 |
| West Breeze H&S Ltd | Professional & scientific | 2021 |
| West Bury Community Cafe & Takeaway Ltd | Hospitality | 2022 |
| West Coast Holidays Ltd. | Hospitality | 2021 |
| West Coast Wellbeing CIC | Other services | 2026 |
| West Cocking Horse Group Ltd | Agriculture & fishing | 2020 |
| West Dron Farm Limited | Agriculture & fishing | 2016 |
| West END Fish and Chips Ltd | Hospitality | 2026 |
| West HAM United Official Supporters' Club Limited | Other services | 2018 |
| West HAM United Supporters' Club Limited | Other services | 2018 |
| West Kent Urology Limited | Health & social care | 2009 |
| West Stow Pods Limited | Hospitality | 2014 |
| West Suffolk Academy Limited | Arts & recreation | 2024 |
| West Suffolk Group Riding for the Disabled Association | Other services | 2007 |
| West Suffolk Hive CIC | Education | 2019 |
| West Suffolk Vineyard Church | Education | 2000 |
| West Suffolk Wireless Consulting Ltd | Professional & scientific | 2024 |
| Westcoast Window Systems Ltd | Construction | 2009 |
| Westeria Crest Care Ltd | Health & social care | 2023 |
| Westfall Ridge Ltd | Wholesale & retail | 2026 |
| Westland Court Management Ltd | Real estate | 2021 |
| Westmoor College Ltd | Education | 2025 |
| Westnetworks Holdings Ltd | Information & communication | 2023 |
| Westport Place RTM Company Limited | Households | 2024 |
| Westrope Farming Limited | Agriculture & fishing | 2004 |
| Wests Property Management Limited | Real estate | 2025 |
| Wfco Ltd | Manufacturing | 2023 |
| WG Consultancy Services Limited | Professional & scientific | 2015 |
| Whale Tail Coffee Ltd | Wholesale & retail | 2025 |
| Whalley Home Improvements Limited | Construction | 2020 |
| Wharfside Developments Limited | Real estate | 2004 |
| What IS Next Ltd | Professional & scientific | 2022 |
| What Tax Limited | Information & communication | 2023 |
| Whatisawbefore Consulting Limited | Professional & scientific | 2026 |
| Whbg Ltd | Information & communication | 2022 |
| Wheelie Cleens Limited | Administrative & support | 2025 |
| Wheeze Limited | Information & communication | 1999 |
| Whelan Commercial Property Ltd. | Construction | 2024 |
| Whelan Property Ltd | Real estate | 2023 |
| Wherrydene Limited | Real estate | 1996 |
| Whimsical Analytics Ltd | Information & communication | 2016 |
| Whissteel Ltd | Manufacturing | 2020 |
| Whistle and Wags Dog Services Ltd | Other services | 2026 |
| Whitcaster Limited | Wholesale & retail | 2013 |
| White & Brown Limited | Other services | 2004 |
| White Crane Publishing Ltd | Information & communication | 2010 |
| White Hart Wivvy Ltd | Hospitality | 2023 |
| White Moon Massage Studio Ltd | Health & social care | 2025 |
| White SIX Meow Company Limited | Manufacturing | 2025 |
| Whiteadder Land Limited | Real estate | 2017 |
| Whitebeam Grove Management Limited | Households | 2021 |
| Whitebeam Holdings Limited | Real estate | 2021 |
| Whitechapel One Ltd | Administrative & support | 2024 |
| Whiteenterprise Ltd | Health & social care | 2019 |
| Whitespace Construction Ltd. | Construction | 2018 |
| Whitestones Realty Limited | Real estate | 2025 |
| Whitewater Media Ltd | Professional & scientific | 2024 |
| Whiting & Partners Wealth Management Limited | Extraterritorial | 2020 |
| Whitings Capital Limited | Professional & scientific | 2017 |
| Whitings IT Solutions Ltd | Information & communication | 2006 |
| Whiz Payroll & Consulting Ltd | Administrative & support | 2024 |
| WHO Rain Zone Ltd | Administrative & support | 2026 |
| Who's the New GUY? Ltd | Professional & scientific | 2020 |