| Upstream Financial Ltd | Professional & scientific | 2000 |
| Urban TAP and Table Limited | Hospitality | 2025 |
| V Harvey Transport Limited | Administrative & support | 2002 |
| V.K.M. Motor Accessories Limited | Wholesale & retail | 1970 |
| V.S.W. Technology Limited | Manufacturing | 1970 |
| Vale Builders (Sussex) Limited | Construction | 2007 |
| Valley Builders Limited | Construction | 1995 |
| Vallum Employee Trust Limited | Financial services | 2026 |
| Vapour Trail Limited | Information & communication | 2003 |
| Veblan Limited | Professional & scientific | 2004 |
| Vent-Axia Clean Air Systems Limited | Manufacturing | 1991 |
| Vent-Axia Group Limited | Manufacturing | 1973 |
| Vent-Axia Limited | Manufacturing | 1933 |
| Venuemap Ltd | Administrative & support | 2004 |
| Verdant Groundcare Ltd | Administrative & support | 2026 |
| Verite CM Limited | Information & communication | 2003 |
| Verite Media Limited | Arts & recreation | 2004 |
| Vetrum Limited | Households | 2003 |
| Vibhu Construction Ltd | Construction | 2024 |
| Village Stores West Chiltington Ltd | Wholesale & retail | 2003 |
| Vintage Roots Limited | Wholesale & retail | 1996 |
| VIO Marketing Services Limited | Professional & scientific | 2015 |
| Virglease (4) Limited | Other services | 2020 |
| Virtual Lease Services Holdings Limited | Information & communication | 2011 |
| Vivi Nail & Spa Ltd | Other services | 2019 |
| Vizion 21 Limited | Professional & scientific | 2003 |
| Volution Group PLC | Manufacturing | 2014 |
| Volution Ventilation UK Limited | Manufacturing | 2018 |
| W.Bond Limited | Construction | 2003 |
| W.Jones and Sons(Motor Engineers)Limited | Wholesale & retail | 1961 |
| W.L.West & Sons Limited | Manufacturing | 1957 |
| W.R. Harrison Limited | Construction | 1997 |
| W.T. Lamb Holdings Limited | Mining & quarrying | 1947 |
| Wakefields Jewellers Limited | Wholesale & retail | 1964 |
| Wallis Transport Ltd | Transport & logistics | 2006 |
| Wards of Kent Limited | Administrative & support | 2018 |
| Warminghurst Limited | Real estate | 2007 |
| Warner Court Management Limited | Households | 2002 |
| Warwick Baker Estate Agents Limited | Real estate | 2007 |
| Wastadel Limited | Real estate | 1968 |
| Watlow Limited | Manufacturing | 1987 |
| Wavelength Electronics Services Limited | Administrative & support | 2004 |
| Wayne Moore Ltd | Professional & scientific | 2001 |
| WD. Systems Ltd | Professional & scientific | 1994 |
| Wealdesign Ltd | Professional & scientific | 2006 |
| Web Essentials Limited | Information & communication | 1992 |
| Webber Group London Ltd | Wholesale & retail | 1997 |
| Webmarkit Solutions Limited | Manufacturing | 2005 |
| Webwise Solutions European Limited | Information & communication | 2006 |
| Wedge Scaffolding Ltd | | 2007 |
| Wedzyy Ltd | Other services | 2017 |
| Wellbeing Ideas Ltd | Education | 2017 |
| Wellmore International Limited | Wholesale & retail | 2000 |
| Wenport Limited | | 1981 |
| Wessex Hanseatic Marine Services Limited | Wholesale & retail | 2006 |
| Westec Holding Company Limited | Professional & scientific | 1999 |
| Westergaard International Limited | Real estate | 2002 |
| Westmeads Masala Ltd | Hospitality | 2024 |
| Westway Sussex Limited | Administrative & support | 2003 |
| Wheelers Horological Limited | Administrative & support | 2002 |
| Whibleys the Jewellers Ltd | Wholesale & retail | 2002 |
| White Raven Associates Limited | Information & communication | 2003 |
| White Square Holdings Limited | Professional & scientific | 2015 |
| Wholesale Carpets Limited | Wholesale & retail | 2007 |
| Wickham Flats Limited | Households | 1962 |
| Wilbar Associates Limited | Transport & logistics | 1995 |
| William Reed Ltd | Information & communication | 1993 |
| Williams Estates Limited | Construction | 2004 |
| Willsmer Wagg Limited | Administrative & support | 1998 |
| Wilson Building & Roofing Services Ltd | Construction | 2003 |
| Wilton Estates Limited | Households | 2005 |
| Wiltshires Florist Limited | Wholesale & retail | 2005 |
| Wimborneheath Limited | Construction | 1995 |
| Window Wise (Sussex) Limited | Construction | 1995 |
| Windowmart (Commercial) Ltd. | Construction | 2002 |
| Winterpick Business Park Limited | Real estate | 1959 |
| Wisvale Limited | Real estate | 1964 |
| Wolf Unique Limited | Professional & scientific | 2005 |
| Women in Games Wigj CIC | Professional & scientific | 2011 |
| Woodgate Residents Management Company Limited | Households | 2017 |
| Woodlands (Sussex) Ltd | Administrative & support | 1990 |
| Woods Holidays Limited | Administrative & support | 1992 |
| Woodshill Services Limited | Professional & scientific | 2006 |
| Woolgar Engineering Limited | Manufacturing | 2007 |
| Worth Abbey Projects Limited | Administrative & support | 2002 |
| Worthing Pavilion Bowling Club,Limited | Arts & recreation | 1960 |
| Worthing Sports & Social Club Limited | Real estate | 1957 |
| WR Consultancy Services Limited | Information & communication | 2003 |
| WR Rebrand Ltd | Extraterritorial | 1927 |
| Yasser Rahman Editing Ltd | Information & communication | 2015 |
| YNB Limited | Hospitality | 2001 |
| York House Ventures Limited | Health & social care | 2003 |
| Yorka Limited | Hospitality | 2005 |
| Young & Smart Limited | Wholesale & retail | 1989 |
| Young & Smart UK Limited | Real estate | 2006 |
| Z S Electrical Services Limited | Construction | 2006 |
| ZEE2 Limited | Information & communication | 2002 |
| Zincroft Computers Limited | | 1986 |
| Zomax Limited | Construction | 1998 |
| Zuxe Consulting Ltd | Professional & scientific | 2025 |