| Wonder Kidz Ltd | Other services | 2014 |
| Wonderbuild Limited | Construction | 2007 |
| Wonderful Sewing Ltd | Manufacturing | 2018 |
| Wonderworks Communications Limited | Professional & scientific | 2014 |
| Wonderworks Drinks Company Limited | Manufacturing | 2020 |
| Wondrly Limited | Information & communication | 2026 |
| WOO Architects Limited | Professional & scientific | 2014 |
| WOO Holdings Limited | Professional & scientific | 2020 |
| Woober Limited | Transport & logistics | 2018 |
| Woodcote Carriage Limited | Wholesale & retail | 2008 |
| Woodcote Construction Management Limited | Construction | 2025 |
| Woodcote Mechanical Services Limited | Construction | 2008 |
| Woodcutts Management (Plots 70-81) Limited | Households | 1992 |
| Woodfield Management Company (Wantage) Limited | Households | 2018 |
| Woodfire Pizzeria Croydon Ltd | Manufacturing | 2026 |
| Woodhayes Ltd | Real estate | 2015 |
| Woodland Chase Management Company Limited | Households | 2002 |
| Woodland Gardens (Bloxham) Management Company Limited | Households | 2011 |
| Woodland House Development Ltd | Real estate | 2022 |
| Woodland Mews Management Ltd | Households | 2015 |
| Woodland Place Residents Management Company Limited | Households | 2014 |
| Woodlands (Barrow Gurney) Managing Company Limited | Professional & scientific | 2022 |
| Woodlands (Merstham) Management Company Limited | Households | 2015 |
| Woodlands Heights RTM Company Limited | Households | 2009 |
| Woodlands Holdings Group Limited | Construction | 2020 |
| Woodlands Management (Warlingham) Company Limited | Households | 2011 |
| Woodlands Park (Acton) Management Company Limited | Households | 2021 |
| Woodlands Place (Caterham) Management Company Limited | Households | 2007 |
| Woodmere Food and Wine Ltd | Wholesale & retail | 2022 |
| Woodpecker View Management Co Ltd | Households | 2020 |
| Woods Bank Management Company Limited | Households | 2004 |
| Woods of London Chauffeurs Limited | Transport & logistics | 2015 |
| Woods Road Management Company Limited | Households | 2015 |
| Woodside Court (Block A1) RTM Company Limited | Households | 2014 |
| Woodside Court (Block A2) RTM Company Limited | Households | 2015 |
| Woodside Court (Block B1) RTM Company Limited | Households | 2015 |
| Woodside Court (Block B2) RTM Company Limited | Households | 2015 |
| Woodside Court (Block B3) RTM Company Limited | Households | 2015 |
| Woodside Green (Croydon) NO.5 Residents Company Limited | Households | 1987 |
| Woodside Motor Company (Croydon) Limited | Wholesale & retail | 2022 |
| Woodvale Management Company Limited | Households | 2002 |
| Woodville Gardens (Deanshanger) Management Company Limited | Real estate | 2014 |
| Woodzgoods Ltd | Wholesale & retail | 2025 |
| Wookie Properties (Cardiff) Ltd | Real estate | 2017 |
| Woolwich CEX Ltd | Wholesale & retail | 2012 |
| Wootton Venues Ltd | Professional & scientific | 2009 |
| Wordfusion AI Ltd | Information & communication | 2025 |
| Wordwrite Limited | Arts & recreation | 2017 |
| Work Force Supplies Limited | Other services | 2014 |
| Work on IT Limited | Administrative & support | 2016 |
| Work,Environment & Lifelong Learning (Well) | Other services | 2014 |
| Workforce Solutions London Limited | Administrative & support | 2022 |
| Working Water Limited | Administrative & support | 2007 |
| Workit Consulting Limited | Administrative & support | 2019 |
| Worksgroundup Ltd | Real estate | 2025 |
| Workshop, Portland Ltd | Hospitality | 2023 |
| Worktrail Limited | Information & communication | 2018 |
| World of Afro Foods Ltd | Wholesale & retail | 2023 |
| World Wide Software Consultant Ltd | Information & communication | 2025 |
| Worldclocks Limited | Administrative & support | 2017 |
| Worldewide Limited | Wholesale & retail | 1999 |
| Worldlink Consulting Ltd | Education | 2024 |
| Worldtech Consulting Limited | Information & communication | 2023 |
| Worldwide Furniture London Limited | Wholesale & retail | 2017 |
| Worldwide Silver Lining | Education | 2002 |
| Worrall Gardens Management Company Limited | Households | 2008 |
| Worsley Bridge Garage Ltd | Wholesale & retail | 2025 |
| Worsley Grange Freehold Limited | Households | 2007 |
| Worsley Grange Management Company Limited | Households | 2002 |
| Worth More Limited | Real estate | 2005 |
| Worthmore Holdings Limited | Construction | 2025 |
| Worthyground Property Management Limited | Households | 1989 |
| Worting Park (Basingstoke) Management Company Limited | Households | 2025 |
| WOW London Ltd | Arts & recreation | 2014 |
| WP Healthcare Consulting Ltd | Professional & scientific | 2019 |
| WP Mcmanus Limited | Professional & scientific | 2014 |
| Wquarshie Limited | Manufacturing | 2014 |
| WR Finances Ltd. | Financial services | 2019 |
| WR Interiors Ltd | Construction | 2023 |
| WR Recruitment Ltd | Other services | 2019 |
| Wrapstarzldn Ltd | Administrative & support | 2019 |
| Wray Coppice (Freehold) Limited | Households | 2016 |
| Wray Estate Ltd | Real estate | 2019 |
| Wray Haven Properties Limited | Health & social care | 2026 |
| Wren & Sons Ltd | Construction | 2014 |
| Wren Place Management Company Limited | Households | 2016 |
| Wrencote Flats Limited | Real estate | 2026 |
| Wrencote Limited | Real estate | 2006 |
| Wright Brain Thinking Limited | Professional & scientific | 2014 |
| Wright Locations Ltd | Other services | 2013 |
| Wrightcare Solution Ltd | Health & social care | 2025 |
| Wrights Academy Ltd. | Education | 2017 |
| Writtle Road (Chelmsford) Residents Association Limited | Households | 2000 |
| WS Healthcare Career Limited | Wholesale & retail | 2018 |
| WS Property Surgery Limited | Construction | 2018 |
| WS Thai Food Products Limited | Agriculture & fishing | 2016 |
| Wscastles Ltd | Hospitality | 2023 |
| WT Partnership - Health and Safety Consultants | Professional & scientific | 1984 |
| WT Partnership - South & West | Professional & scientific | 1981 |
| WT Partnership Healthcare Capital Projects Limited | Professional & scientific | 2001 |