| Warfy Limited | Education | 2006 |
| Warmer Homes Installs Ltd | Administrative & support | 2020 |
| Warmview Windows Ltd | Construction | 2019 |
| Warncken Holdings Limited | Financial services | 2025 |
| Warren Sands Management Company Limited | Construction | 2015 |
| Wasabi Design and Marketing Ltd | Professional & scientific | 2012 |
| Waters - Kitchen Ltd | Wholesale & retail | 2025 |
| Waterworks Developments Ltd | Construction | 2020 |
| Wathen Road Dental Practice Limited | Health & social care | 2012 |
| Watling Homes Limited | Construction | 2018 |
| Way on Down South Ltd | Professional & scientific | 2024 |
| Waymark Construction Limited | Construction | 2007 |
| Ways and Means Associates Limited | Arts & recreation | 2019 |
| Wbsd Holdings Ltd | Financial services | 2022 |
| WBSD2 Holdings Ltd | Financial services | 2023 |
| WBSD3 Holdings Ltd | Financial services | 2023 |
| WE ARE Open Gate Ltd | Administrative & support | 2026 |
| WE ARE Outdoor Ltd | Professional & scientific | 2025 |
| WE Assure Ltd | Other services | 2021 |
| WE Find Sols Limited | Administrative & support | 2023 |
| WE Go Again Limited | Information & communication | 2026 |
| WE Tutor Young Minds Ltd | Education | 2024 |
| Weald Allotments and Gardeners CIC | Wholesale & retail | 2025 |
| Wealden Investments Limited | Real estate | 2000 |
| WEAREMKT360 Ltd | Information & communication | 2022 |
| Weatherflare Limited | Information & communication | 2019 |
| Weatherstone Properties (Seaford) Ltd | Real estate | 2014 |
| Weatherstone Properties Limited | Real estate | 1983 |
| Webber Software Ltd | Information & communication | 2017 |
| Webcycle Ltd | Professional & scientific | 2020 |
| Webfascia Ltd | Professional & scientific | 2026 |
| Webuild Sussex Ltd | Construction | 2017 |
| Wedding in a Teacup Ltd | Wholesale & retail | 2011 |
| Week Tension Ltd | Wholesale & retail | 2025 |
| Weez & Merl Ltd | Manufacturing | 2018 |
| Weft Consultancy Ltd | Professional & scientific | 2026 |
| Welan Real Estates Ltd | Real estate | 2020 |
| Welbeck Court Hove(Residents)Limited | Hospitality | 1960 |
| Welbeck Hazel Limited | Energy | 2014 |
| Welbeck Mansions Hove Limited | Households | 2003 |
| Welcome Touch Wellbeing CIC | Health & social care | 2026 |
| Well Bred Design Limited | Wholesale & retail | 2014 |
| Well Well Well Ltd | Professional & scientific | 2025 |
| Wellbn Ltd | Other services | 2025 |
| Wellmind Health Limited | Information & communication | 2002 |
| Wells Care Limited | Health & social care | 1984 |
| Wells Dental Laboratory Limited | Health & social care | 2021 |
| Wenham Carter Consulting Group Limited | Financial services | 2021 |
| Wenham Carter Consulting Limited | Administrative & support | 2012 |
| Wenham Carter Group Limited | Financial services | 2021 |
| Wenham Carter Ltd | Administrative & support | 2003 |
| Weplumb Ltd | Construction | 2017 |
| Weppons Freeholders Association Limited | Households | 2021 |
| Wertarbeit IT Solutions Ltd | Information & communication | 2017 |
| WES Estates Ltd | Real estate | 2026 |
| West Beach Properties Ltd | Real estate | 2013 |
| West Carclaze Solar PV Ltd | Energy | 2015 |
| West Hove Clinic Limited | Health & social care | 2002 |
| West Hove Golf Club Limited | Arts & recreation | 1997 |
| West Hove Holdings Ltd | Professional & scientific | 2019 |
| West London Psychotherapy Clinic Limited | Health & social care | 2024 |
| West Newleigh House Limited | Households | 2014 |
| West Pier Ltd | Information & communication | 2026 |
| West Rentals Limited | Real estate | 2022 |
| Westall Enterprises Limited | Health & social care | 2025 |
| Westall Estates Limited | Real estate | 2025 |
| Westall Holdings Limited | Financial services | 2025 |
| Westall Limited | Health & social care | 2022 |
| Westbourne Gardens RTM Company Limited | Households | 2019 |
| Westdene Properties Ltd | Real estate | 2020 |
| Western Cape Ltd | Health & social care | 2024 |
| Western Road Cuts Ltd | Other services | 2014 |
| Western Street Limited | Real estate | 1999 |
| Westfield England Ltd | Real estate | 2024 |
| Westhill Property Management Ltd | Real estate | 2015 |
| Westminster House Freehold Limited | Real estate | 2019 |
| Westminster Venue Collection Ltd | Other services | 2008 |
| Weston Longville G1 Solar Farm Limited | Energy | 2014 |
| Westscott Developments Limited | Construction | 2009 |
| Wevie Limited | Arts & recreation | 2014 |
| Whaleback Ltd | Professional & scientific | 2018 |
| Whelan Property Investments Ltd | Real estate | 2010 |
| Where's My Baccy? Ltd | Manufacturing | 2025 |
| Whispering Equus LLP | | 2009 |
| White Compass Associates Ltd | Real estate | 2022 |
| White Cook Chef Ltd | Hospitality | 2020 |
| White House Recruitment Limited | Administrative & support | 2017 |
| White Light Developments Limited | Construction | 2014 |
| White Onyx Limited | Hospitality | 2014 |
| White Shadow Limited | Construction | 2024 |
| White Shadow Renewables Ltd | Construction | 2025 |
| White Tara Healthcare Ltd | Health & social care | 2020 |
| White UK Holdco Limited | Financial services | 2024 |
| Whitegable Limited | Real estate | 1996 |
| Whitlock and Heaps Ltd | Real estate | 2019 |
| Whittle Property Ltd | Real estate | 2023 |
| Whitworth Brough Ltd | Administrative & support | 2017 |
| Whitworth Search Ltd. | Administrative & support | 2017 |
| Wholesale Wood Flooring Ltd | Wholesale & retail | 2013 |
| Wholesome Foodservice Limited | Wholesale & retail | 2004 |