| Winston & Watson Holdings Ltd | Professional & scientific | 2025 |
| Winter Brickwork & Construction Limited | Construction | 2018 |
| Winter Fell Limited | Wholesale & retail | 2025 |
| Winter Foods Ltd | Wholesale & retail | 2025 |
| Winterary Ltd | Wholesale & retail | 2024 |
| Wintergreen Consultancy Ltd | Professional & scientific | 2019 |
| Winterhouse Development Limited | Construction | 2017 |
| Winterton Sealview Limited | Arts & recreation | 2024 |
| Wireless Century Limited | Professional & scientific | 2011 |
| Wireless Sales Ltd | Wholesale & retail | 2023 |
| Wise Commerce Limited | Information & communication | 2022 |
| Wise Mortgages Ltd | Financial services | 2014 |
| Wise Retails Ltd | Wholesale & retail | 2024 |
| Wise Utility Ltd | Professional & scientific | 2011 |
| Wisetax Accountants Ltd | Professional & scientific | 2015 |
| Wisetax Consultants Ltd | Professional & scientific | 2024 |
| Wisetax Services Ltd | Professional & scientific | 2024 |
| Wishing Will Foundation CIC | Other services | 2021 |
| Wishing Wills Limited | Professional & scientific | 2017 |
| Wishly Limited | Real estate | 2021 |
| Wissington Limited | Wholesale & retail | 2017 |
| Wiszr Ltd | Information & communication | 2024 |
| Witchsticks Ltd | Administrative & support | 2019 |
| Without Shape Without Form | Arts & recreation | 2024 |
| Witts Conveyancing Ltd | Professional & scientific | 2025 |
| WIZ Mobile Tyre Ltd | Wholesale & retail | 2024 |
| Wjkf Consulting Ltd | Professional & scientific | 2024 |
| Wjtraders Limited | Wholesale & retail | 2020 |
| WL79 Ltd | Construction | 2025 |
| WM Fitness Ltd | Other services | 2026 |
| WM Interiors Ltd | Manufacturing | 2021 |
| WMG Automotive Limited | Wholesale & retail | 2025 |
| WMK Builder Ltd | Construction | 2025 |
| WMY Properties Ltd | Professional & scientific | 2024 |
| WNC UK Limited | Information & communication | 2014 |
| WNS Services Limited | Professional & scientific | 2021 |
| Wokhei Breath of the WOK Limited | Wholesale & retail | 2024 |
| Wokhei Limited | Hospitality | 2018 |
| Wolf & Sons Security Ltd | Administrative & support | 2019 |
| Wolf Pack IT Ltd | Information & communication | 2023 |
| Wolvera Limited | Wholesale & retail | 2025 |
| Women in Amazon Business Ltd | Professional & scientific | 2025 |
| Wonder X Hub Company Limited | Arts & recreation | 2025 |
| Wonderboy Ltd | Wholesale & retail | 2025 |
| Wonderlan Limited | Information & communication | 2013 |
| Wooburn Limited | Real estate | 1981 |
| Wood & Nail Ltd | Construction | 2025 |
| Woodbridge Assets Limited | Real estate | 2002 |
| Woodlands Bakery Limited | Wholesale & retail | 2003 |
| Woodlands Residents Association (Farnham Common) Limited | Households | 1983 |
| Woodlark Carpentry & Roofing Limited | Construction | 2020 |
| Woodlark Timber & Roofing Merchants Limited | Wholesale & retail | 2021 |
| Woodman Wardrobes Ltd | Construction | 2021 |
| Woodside Care (Aberdeen) Limited | Health & social care | 2019 |
| Wooster Project Services Ltd | Administrative & support | 2011 |
| Word on the Street CIC | Education | 2025 |
| Wordsmith Publishers Ltd | Information & communication | 2022 |
| Wordwings Aviation Support Ltd | Transport & logistics | 2024 |
| Work Hard Transport Limited | Transport & logistics | 2021 |
| Work Partners Limited | Wholesale & retail | 2025 |
| Workdraft Studio Limited | Information & communication | 2019 |
| Workmate OS Systems Limited | Wholesale & retail | 2025 |
| Workstreams Ltd | Professional & scientific | 2022 |
| World Education Consultant Limited | Education | 2025 |
| World Hotel Management Limited | Administrative & support | 2014 |
| World Human Limited | Wholesale & retail | 2025 |
| World Knowledge Ltd | Education | 2023 |
| World Legal Help Corporation Limited | Professional & scientific | 2024 |
| World of Hospitality Ltd | Hospitality | 2011 |
| World of Things Ltd | Wholesale & retail | 2017 |
| World Star Recruitment Solution Limited | Administrative & support | 2013 |
| World Tree Education Ltd | Education | 2024 |
| Worldwide Resourcing Ltd | Construction | 2020 |
| Worldwide Trading Enterprise Ltd | Wholesale & retail | 2019 |
| Worldwide Wine London Limited | Wholesale & retail | 2019 |
| WQM Wholesale Limited | Transport & logistics | 2004 |
| Wrap & Roll Catering Services Limited | Hospitality | 2025 |
| Wright Academy Ltd | Information & communication | 2017 |
| Write Area Ltd | Real estate | 2026 |
| Wrobel Property Limited | Real estate | 2024 |
| WSE Lounge & Restaurants Ltd | Hospitality | 2023 |
| WSL4 Ltd | Real estate | 2020 |
| WSR Property Holding Limited | Real estate | 2024 |
| Wsto Art Limited | Wholesale & retail | 2026 |
| Wsto Property Limited | Construction | 2026 |
| Wsz-Trans Ltd | Transport & logistics | 2016 |
| WTC Medical and Logistics Ltd | Transport & logistics | 2023 |
| Wuai Ltd | Wholesale & retail | 2021 |
| Wunderwings Grill Ltd | Hospitality | 2026 |
| Wunderwings Ltd | Hospitality | 2021 |
| Wutian Martial Art Ltd | Arts & recreation | 2022 |
| Wuwé Ltd | Wholesale & retail | 2025 |
| WV Fishing Lakes Ltd | Agriculture & fishing | 2024 |
| WW GBR Limited | Health & social care | 1976 |
| Www.Kwikpark.Co.Uk Ltd | Transport & logistics | 2019 |
| Wyldsneaks & Co Limited | Wholesale & retail | 2021 |
| Wymers Wood (Management) Limited | Households | 1997 |
| X Airport Transfers Ltd | Transport & logistics | 2024 |
| X Digital Platforms Ltd | Information & communication | 2024 |
| X Glazing Services Ltd | Construction | 2025 |