| Wavetronix Limited | Manufacturing | 2010 |
| Way Advice Ltd | Administrative & support | 2017 |
| Way to Go Logistics Ltd | Transport & logistics | 2025 |
| WBM1 Ltd | Hospitality | 2019 |
| WDY Services Limited | Construction | 2020 |
| WE ARE Groot Ltd | Real estate | 2021 |
| WE ARE MOP! Limited | Other services | 2012 |
| WE ARE the Future Estate Ltd | Real estate | 2022 |
| WE Browns Hair & Beauty Ltd | Other services | 2024 |
| WE Compare Travel Deals Ltd | Transport & logistics | 2019 |
| WE Deal Appliances Ltd | Other services | 2018 |
| WE Flight Limited | Transport & logistics | 2024 |
| WE Sell Genuine Ltd | Wholesale & retail | 2023 |
| WE That Ball Ltd | Wholesale & retail | 2025 |
| WE Want Your Car - Sussex Limited | Wholesale & retail | 2021 |
| Wealden Services Limited | Administrative & support | 2000 |
| Wealth Tracker Ltd | Financial services | 2019 |
| Webber Motor Company (Southern) Limited | Wholesale & retail | 2002 |
| Webber Motor Company Ltd | Wholesale & retail | 2025 |
| Webcode Creative Ltd | Administrative & support | 2022 |
| Webflair.Co.Uk Ltd | Information & communication | 2013 |
| Webster's Media Ltd | Extraterritorial | 2022 |
| Wedgwood Design Limited | Arts & recreation | 2014 |
| Wedofx Ltd | Construction | 2015 |
| WEECR8T Solutions Consulting Ltd | Professional & scientific | 2019 |
| Wega Ltd | Health & social care | 2023 |
| Weidmuller Pension Trustees Limited | Financial services | 2010 |
| Weleng Ltd | Construction | 2020 |
| Well Pharma Ltd | Health & social care | 2024 |
| Well Street Dental Care Limited | Health & social care | 2011 |
| Welldene Dental Care Ltd | Health & social care | 2009 |
| Wells UK Consultancy Ltd | Administrative & support | 2013 |
| Wellsbourne Dental Care Limited | Health & social care | 2010 |
| Weltricx Limited | Manufacturing | 2021 |
| Werdner Limited | Professional & scientific | 2006 |
| Wespiretech Ltd | Information & communication | 2025 |
| Wesson's Exterior Cleaning Ltd | Administrative & support | 2023 |
| West Green Enterprise Ltd | Wholesale & retail | 2026 |
| West Green Food & Wine Ltd | Wholesale & retail | 2018 |
| West Street Recruitment Limited | Extraterritorial | 1998 |
| West Sussex Auto Repairs Ltd | Wholesale & retail | 2025 |
| West Sussex Hydraulics Limited | Manufacturing | 2017 |
| West Sussex Loft Boarding Ltd | Construction | 2026 |
| West Wood Electrical Limited | Energy | 2016 |
| West&Midsussex Transport Ltd | Transport & logistics | 2025 |
| Western Motors International Ltd | Wholesale & retail | 2026 |
| Western Property Crawley Limited | Real estate | 2025 |
| Western Textiles and Launderette Ltd | Other services | 2024 |
| Westerngeco Limited | Mining & quarrying | 1978 |
| Westgate Interiors Ltd | Construction | 2020 |
| Westgreen Window Cleaning &Guttering Ltd | Administrative & support | 2026 |
| Westie Media Limited | Information & communication | 2021 |
| Westmont Developments Ltd | Real estate | 2024 |
| Westside Apartments Limited | Households | 2019 |
| Weyside Manor Stables Limited | Agriculture & fishing | 2021 |
| WF Logistics Limited | Transport & logistics | 2019 |
| WFZ Properties LLP | | 2022 |
| WH Couriers Ltd | Wholesale & retail | 2022 |
| Whackit Beauty London Ltd | Wholesale & retail | 2018 |
| Wheeler Cars Limited | Transport & logistics | 2024 |
| Wheels Mobility Cars Ltd | Transport & logistics | 2023 |
| Wheelx Tyres Ltd | Manufacturing | 2026 |
| Wherenowuk Ltd | Information & communication | 2026 |
| Whiley Services Limited | Professional & scientific | 2019 |
| Whippy Ice's Ltd | Wholesale & retail | 2010 |
| Whippy Ices Events Limited | Wholesale & retail | 2022 |
| Whispering Vines Ltd | Agriculture & fishing | 2026 |
| White Hart House Management Company Limited | Households | 2007 |
| White House Dental Care Limited | Health & social care | 2010 |
| White Label Cocktails Limited | Manufacturing | 2011 |
| White Rose Clothing Limited | Wholesale & retail | 2016 |
| Whitney Home Improvements Ltd | Construction | 2020 |
| WHO ATE My Pretzel Ltd | Extraterritorial | 2026 |
| WHS Prestige Cleaning Ltd | Administrative & support | 2025 |
| Whyte Brokers Limited | Financial services | 2019 |
| Wickflow Limited | Education | 2025 |
| Wickland Court Management Company Limited | Administrative & support | 1989 |
| Widley George Limited | Hospitality | 2005 |
| Wild Arena Ltd | Administrative & support | 2003 |
| Wild Sparks HQ CIC | Arts & recreation | 2025 |
| Wild Tiger Holdings Ltd | Hospitality | 2024 |
| Wild Welfare | Administrative & support | 2015 |
| Wild Wonderland Lancing Ltd | Arts & recreation | 2023 |
| Wilding MAN Ltd | Other services | 2026 |
| Wilkinson Advisory Group Limited | Professional & scientific | 2025 |
| Will O the Wisp Candles Limited | Wholesale & retail | 2015 |
| William Reed Group Ltd | Professional & scientific | 2017 |
| William Reed International Ltd | Information & communication | 2005 |
| Williamsnutrition Ltd | Health & social care | 2024 |
| Willing Hands Care Agency Ltd | Health & social care | 2022 |
| Willow Lane Business Park Ltd | Real estate | 2017 |
| Willoway Mobile Home Park Limited | Administrative & support | 2016 |
| Wilson's Property Development Limited | Real estate | 2014 |
| Wilton Hill Court Limited | Real estate | 1995 |
| Wilton House (Crawley) Limited | Households | 2007 |
| Wims Services Limited | Administrative & support | 2026 |
| Windmill Bidco Limited | Manufacturing | 2011 |
| Windmill Cleanco Limited | Manufacturing | 2011 |
| Windmill Contractors Limited | Administrative & support | 1983 |
| Windmill Midco Limited | Manufacturing | 2011 |