| Warwick Lane Developments Limited | Construction | 2018 |
| Warwick Retail Ltd | Wholesale & retail | 2020 |
| Warwickfirst Limited | Real estate | 2018 |
| Washington Building Development (Sussex) Ltd | Construction | 2022 |
| Washington Caravan & Camping Park Limited | Hospitality | 2013 |
| Washington-Jones Consulting Ltd | Professional & scientific | 2023 |
| Waste Wise Services Ltd | Water & waste | 2025 |
| Watch Healthcare Ltd | Health & social care | 2020 |
| Watch Reserve Ltd | Wholesale & retail | 2025 |
| Water Front Café Woolwich Ltd | Hospitality | 2017 |
| Water Mini Market Ltd | Wholesale & retail | 2025 |
| Waterbear Education Ltd | Education | 2017 |
| Waterfall Homes UK Ltd | Real estate | 2021 |
| Waterford East Investments Limited | Construction | 2018 |
| Waterford Properties Ltd | Construction | 1995 |
| Watertech Worldwide Limited | Construction | 2017 |
| Watford Commercial Vehicles Limited | Wholesale & retail | 2008 |
| Watkins I Limited | Wholesale & retail | 2015 |
| Watson-Rekai Properties Limited | Real estate | 2022 |
| Watts Technology Services Ltd | Construction | 2023 |
| Watts Works Limited | Construction | 2018 |
| Waukesha Bearings Limited | Manufacturing | 2001 |
| Wave Hair Ltd | Wholesale & retail | 2025 |
| Wave Installs Limited | Professional & scientific | 2016 |
| Wave Office Limited | Wholesale & retail | 1998 |
| Wave Office Stationery Limited | Wholesale & retail | 2014 |
| Waves Salon Limited | Other services | 2006 |
| Wavo Ltd | Education | 2013 |
| Waybridge Educational Advisory Limited | Education | 2009 |
| Wayfair Innovations Limited | Administrative & support | 2017 |
| Wayfinder Yacht Charter Ltd | Real estate | 2022 |
| Wayra UK Limited | Financial services | 2012 |
| Wayward LAD Limited | Administrative & support | 2004 |
| Wazobia Afro Trading UK Ltd | Wholesale & retail | 2026 |
| Wbcollection Ltd | Wholesale & retail | 2025 |
| Wcdoan Holdings Ltd | Financial services | 2023 |
| WCM Services Ltd | Financial services | 2023 |
| WCS Electrical Contractors Limited | Construction | 2014 |
| WCS Electrical Limited | Administrative & support | 2018 |
| WE ARE Archipelago Ltd | Information & communication | 2019 |
| WE ARE Covert Limited | Professional & scientific | 2016 |
| WE ARE Pollinator Pioneers C.I.C. | Education | 2015 |
| WE Have Sound Limited | Wholesale & retail | 2011 |
| WE Progress Ltd | Real estate | 2020 |
| WE R Fire Door Solutions Ltd | Manufacturing | 2024 |
| WE Will Concierge Ltd | Administrative & support | 2026 |
| WE Will Drive Limited | Transport & logistics | 2025 |
| Wealth Nominees Limited | Extraterritorial | 2008 |
| Weava Limited | Information & communication | 2017 |
| Web Breakfast Ltd | Information & communication | 2007 |
| Weber & Hudson (Margaret Street) Limited | Wholesale & retail | 1935 |
| Websters Property Cleaning Services Limited | Administrative & support | 2015 |
| Wedge Estates Limited | Real estate | 2017 |
| Wedge Fish Limited | Wholesale & retail | 2009 |
| Wedge Foods Limited | Wholesale & retail | 2019 |
| Weee Consultancy Ltd | Water & waste | 2024 |
| Weeks & Hamill Holdings Ltd | Hospitality | 2026 |
| Weeks & Hamill Ltd | Hospitality | 2026 |
| Welcome Engineering Limited | Wholesale & retail | 2008 |
| Weldscan Limited | Administrative & support | 2009 |
| Well Hungry Ventures Ltd | Hospitality | 2024 |
| Wellifypro Ltd | Administrative & support | 2025 |
| Wellis Hot Tubs Ltd | Wholesale & retail | 2021 |
| Wells Place West Chiltington Limited | Households | 2024 |
| Wendy Edwards Consulting Ltd | Information & communication | 2022 |
| Weniger Holdings Limited | Financial services | 2020 |
| Wenlong AD Limited | Professional & scientific | 2026 |
| Went Consultants Limited | Professional & scientific | 2009 |
| Wentworth Industries Limited | Wholesale & retail | 2016 |
| Wessex Aerospace Ltd | Extraterritorial | 1999 |
| West Avenue Properties Limited | Real estate | 1999 |
| West Grinstead Ploughing Ltd | Arts & recreation | 2024 |
| West Leisure Developments Limited | Hospitality | 2020 |
| West Maddox LLP | | 2014 |
| West Park Nursery Ltd | Health & social care | 2026 |
| West Square Productions Limited | Arts & recreation | 2021 |
| West Sussex Care Services Limited | Health & social care | 2020 |
| West Sussex Carpentry Ltd | Manufacturing | 2020 |
| West Sussex Cars Ltd | Extraterritorial | 2025 |
| West Sussex Classic Wedding Cars Ltd | Transport & logistics | 2016 |
| West Sussex Cleaning Service Ltd | Administrative & support | 2024 |
| West Sussex Driveways Limited | Administrative & support | 2017 |
| West Sussex Electrical Limited | Energy | 2014 |
| West Sussex Fitted Interiors Ltd | Wholesale & retail | 2022 |
| West Sussex HIP and Knee Unit Ltd | Extraterritorial | 2004 |
| West Sussex Hire Ltd | Administrative & support | 2025 |
| West Sussex Holdings Ltd | Financial services | 2025 |
| West Sussex Investments Ltd | Real estate | 2021 |
| West Sussex Mind | Health & social care | 2014 |
| West Sussex Motors Limited | Real estate | 1962 |
| West Sussex Roofing Company Limited | Construction | 1981 |
| West Sussex Thatching Co Limited | Construction | 2024 |
| West Sussex Van Centre Limited | Wholesale & retail | 2005 |
| West Sussex Windows Ltd | Construction | 2025 |
| West Worthing Club C.I.C. | Arts & recreation | 2014 |
| West Worthing Club Trading Limited | Arts & recreation | 2024 |
| West Worthing Dental Chambers Ltd | Health & social care | 2014 |
| West Worthing PO Limited | Transport & logistics | 2015 |
| WEST59 Ltd | Information & communication | 2013 |
| Westair Services Ltd | Manufacturing | 2008 |