| Within International Limited | Administrative & support | 2006 |
| Withycombe Management Co. Limited | Households | 1977 |
| Wolfshack Films Ltd | Information & communication | 2025 |
| Wonham Place RTM Company Limited | Households | 2009 |
| Woodandhome Limited | Manufacturing | 2015 |
| Woodblock Limited | Manufacturing | 2005 |
| Woodcote (South Godstone) Management Limited | Households | 2020 |
| Woodcote House Estate Co.Limited | Real estate | 1939 |
| Woodcote House(Trading) Limited | Professional & scientific | 1971 |
| Woodhayes Residents Association Limited | Households | 2007 |
| Woodland Drive Ltd | Households | 2019 |
| Woodland Services UK. Ltd | Agriculture & fishing | 2022 |
| Woodland View Management Company Limited | Households | 2007 |
| Woodlands (Reigate) Management Limited | Households | 1967 |
| Woodlands (Reigate) NO 3 Limited | Households | 1969 |
| Woodpecker Gardens Residents Company Limited | Households | 2022 |
| Woods Fencing and Exterior Maintenance Ltd | Administrative & support | 2024 |
| Woodside Consulting Limited | Professional & scientific | 2009 |
| Woodvill Court Management Company Limited | Households | 2004 |
| Woodyard Mead (Cobham) Management Company Limited | Households | 2024 |
| Woolford Developments Limited | Real estate | 2024 |
| Woolford Farms Limited | Agriculture & fishing | 2017 |
| Wools (London) Limited | Professional & scientific | 1982 |
| Wooster Safety Products Ltd | Professional & scientific | 2024 |
| Workforce Partnership Limited | Administrative & support | 2024 |
| Workin Fitness Limited | Information & communication | 2024 |
| Working Capital Consultancy Ltd | Professional & scientific | 2015 |
| Workspace Office Solutions Ltd | Construction | 2009 |
| Worlds END Epsom Limited | Extraterritorial | 2015 |
| Worldwide Picture Vehicle Services Ltd | Information & communication | 2020 |
| Worldwide Travel Benefits Ltd | Professional & scientific | 2019 |
| Wotton Farms Limited | Agriculture & fishing | 2009 |
| Wraysbury Courtyard Residents Management Company Limited | Households | 2001 |
| WSG Midland Holdings Limited | Information & communication | 2012 |
| WTA Tour (UK) Limited | Arts & recreation | 2021 |
| WTS Building Services Ltd | Construction | 2020 |
| WTS Plumbing & Heating Limited | Construction | 2008 |
| Wwcw Limited | Other services | 2021 |
| Wychwood Environmental Limited | Professional & scientific | 2013 |
| Wychwood RTM Company Limited | Households | 2011 |
| Wyckham House (Oxted) Management Company Limited | Households | 2011 |
| WYN Consulting Limited | Professional & scientific | 2025 |
| Xenderma Limited | Wholesale & retail | 2012 |
| Xenium Properties (UK) Limited | Information & communication | 2005 |
| Xenium Solutions Limited | Information & communication | 2000 |
| Xks-Geo Ltd | Professional & scientific | 2020 |
| Xylem Global | Agriculture & fishing | 2020 |
| Y & M Finance Ltd | Financial services | 2025 |
| Y L K Limited | Hospitality | 2013 |
| Yachats Productions Limited | Professional & scientific | 2021 |
| Yarl Ltd | Wholesale & retail | 2015 |
| Yarl Properties Ltd | Real estate | 2019 |
| YBS London Ltd | Other services | 2024 |
| Yelverton Court (Lessees) Limited | Households | 1961 |
| YOO Digital Ltd | Information & communication | 2016 |
| Youden & Company Ltd | Professional & scientific | 2026 |
| Your Blink Entertainment Limited | Information & communication | 2008 |
| Your Digital Finance Partner Limited | Professional & scientific | 2018 |
| Your Finance Partner Limited | Professional & scientific | 2024 |
| Your Lease Partner Limited | Administrative & support | 2018 |
| Your Life UK Limited | Other services | 2002 |
| Your Local Property Agent Ltd | Real estate | 2024 |
| Your Safe Ltd | Administrative & support | 2024 |
| YS Media Content Creation Ltd | Professional & scientific | 2024 |
| Z Design Works Ltd | Professional & scientific | 2026 |
| Z317 Music Ltd | Information & communication | 2020 |
| Zaben Bott Limited | Financial services | 2024 |
| Zaben Ltd | Construction | 2018 |
| ZED Publishing Limited | Professional & scientific | 2008 |
| Zema Media Ltd | Professional & scientific | 2021 |
| Zenia Homes Limited | Real estate | 2015 |
| ZN Digital Ltd | Professional & scientific | 2023 |