| Westward Reach Bideford Management Company Limited | Households | 2009 |
| Wetherby Court Management Company Limited | Households | 1989 |
| WEY 21 Ltd | Professional & scientific | 2021 |
| Weycorner (Guildford) Management Company Limited | Households | 2017 |
| Weymuff (UK) Limited | Real estate | 2018 |
| Weymuff Limited | Real estate | 2018 |
| Wharncliffe Court (Highcliffe) Limited | Households | 1986 |
| Wheatlands Residents Limited | Households | 1963 |
| White Forest Property Ltd | Real estate | 2025 |
| White Horses (B.O.S.) Management Limited | Households | 2005 |
| White Land (Forum) Management Company Limited | Households | 2024 |
| White Lodge Consulting Limited | Professional & scientific | 2005 |
| White Rock Nursing Home Limited | Health & social care | 2010 |
| White Willows Management Company Limited | Households | 2013 |
| Whitebeam Close Maintenance Ltd | Households | 2008 |
| Whitehayes House Estate Limited | Households | 2003 |
| Whitehouse Park (M Keynes) Management Limited | Households | 2015 |
| Whiter Than White Cleaning Services Limited | Administrative & support | 2025 |
| Whites Bnbs Cleaning Ltd | Administrative & support | 2025 |
| Whittington Walk (Worcester) Management Company Limited | Households | 2017 |
| Whittington's Meadow Management Company Limited | Households | 2007 |
| Whitworth Gardens Management Company Limited | Households | 2022 |
| Wholesale Beads Limited | Wholesale & retail | 2013 |
| Wichelstowe Estate Management CIC | Other services | 2020 |
| Wigmore Fields Management Company Limited | Households | 2003 |
| Wilford Fields Management Company Limited | Households | 2018 |
| Wilkio Limited | Information & communication | 2020 |
| Williamson Road Management Company Limited | Households | 1999 |
| Willoughby Walk Residents Management Company Limited | Households | 2010 |
| Willow Heights Management Co Ltd | Households | 2017 |
| Willow House Management (Newbury) Limited | Real estate | 2006 |
| Willow Lake (Bletchley One) Management Company Limited | Households | 2008 |
| Willow Lake (Bletchley Two) Management Company Limited | Households | 2009 |
| Willow Palm Limited | Hospitality | 2015 |
| Willows Hatch (Bathpool) Management Company Limited | Households | 2012 |
| Willoyork Limited | Real estate | 2024 |
| Winchester Park Amenity Areas Management Company Limited | Households | 2013 |
| Winchfield Crescent Management Company Limited | Households | 2017 |
| Windmill Chase (Chinnor) Management Company Limited | Households | 2017 |
| Wing Ling Ltd | Wholesale & retail | 2021 |
| Wingfield Place Estate Management Company Limited | Real estate | 2022 |
| Winsford Park Management Company Limited | Households | 2024 |
| Winterbourne Gardens Management Company Ltd | Real estate | 2017 |
| Wintringham (ST Neots) Management Company Limited | Households | 2020 |
| Winway Investment Ltd | Professional & scientific | 2025 |
| Wirral (Carlett Park) Management Company Limited | Households | 2013 |
| Withnoe Farm Management Company Limited | Households | 2016 |
| Wixams 4.3 Management Company Limited | Households | 2019 |
| Wolsey Manor Management Company Limited | Administrative & support | 2022 |
| Wolsey Way (Milford) NO. 2 Management Company Limited | Administrative & support | 1973 |
| Wombridge Gardens Management Company Limited | Households | 1991 |
| Woodberry Copse (Phase 2) Management Company Limited | Households | 2016 |
| Woodberry Copse Management Company Limited | Households | 2014 |
| Woodbottom Management Company Limited | Real estate | 2017 |
| Woodcroft Park Management Company Limited | Real estate | 2021 |
| Woodcroft, (Moira) Residents Management Limited | Households | 2016 |
| Woodford Grange Management Company Limited | Households | 2016 |
| Woodgate Court Management Company Limited | Households | 2008 |
| Woodgate Grange (Kelvedon Hatch) Management Company Limited | Administrative & support | 2016 |
| Woodland Gate - 358 Company Ltd | Households | 2025 |
| Woodlands (Barton-On-Sea) Management Company Limited | Households | 1985 |
| Woodlands Gate Management Company Limited | Households | 1982 |
| Woodlands Watford Management Company Limited | Households | 2018 |
| Woodley (Lymington) Management Company Limited | Households | 1984 |
| Woodside (Rayleigh) Management Company Limited | Households | 2006 |
| Woodside Capital Limited | Real estate | 2016 |
| Woodside Link (Linmere) Residents Management Company Limited | Households | 2024 |
| Woodside Place DRY Street Management Company Ltd | Households | 2018 |
| Wooldridge Site Management Ltd | Professional & scientific | 2017 |
| Woolley and Ford Asbestos Services Ltd | Construction | 2024 |
| Wootton (Hall END Road) Management Limited | Households | 2016 |
| Wootton Homes Limited | Construction | 2003 |
| Wootton Rise Homes Limited | Construction | 2009 |
| Worcester Gate (Worcester) Management Company Limited | Households | 2020 |
| Workmans Aircon Limited | Construction | 2005 |
| World Land Limited | Real estate | 2021 |
| Worldwidewater Ltd | Wholesale & retail | 2014 |
| Worlebury Park (Weston Super Mare) Management Company Limited | Households | 2004 |
| Wrenshaw Court Freeholders Ltd | Households | 1996 |
| Wrenshaw Court Management Company Limited | Households | 1994 |
| Wrights Letting Agents Limited | Real estate | 2013 |
| WV Four Management Company Limited | Households | 2007 |
| Wychcroft (Management) Limited | Households | 1989 |
| Wychwood H Management Company Limited | Households | 2010 |
| Wyld Exotics Limited | Wholesale & retail | 2025 |
| WYN Davies 5201 Consultancy Limited | Professional & scientific | 2007 |
| Wyndham Park Management Company Limited | Households | 2012 |
| Wyntergrove Residents Association Limited | Households | 2000 |
| X Studio Car Ltd | Administrative & support | 2025 |
| XYZ Quality Ltd | Professional & scientific | 2024 |
| Yannons Court Management Company Limited | Households | 2015 |
| Yaverland Chalets Limited | Professional & scientific | 2015 |
| Yellow FOX Carpet Cleaners Ltd | Other services | 2020 |
| Yeomans Lodge Management Company Limited | Households | 2004 |
| YEW Tree Farm (Droitwich) Management Company Limited | Households | 2016 |
| York Gate Management Company Limited | Households | 2008 |
| Young Family Properties Ltd | Real estate | 2016 |
| Young, Smith and Company Limited | Professional & scientific | 2006 |
| Your Logistic Solution Ltd | Transport & logistics | 2024 |
| Ytene Ltd | Real estate | 2021 |