| Waterfall Estate Planning Limited | Professional & scientific | 2025 |
| Waterloo Food and Wine Convenience Stores Ltd | Wholesale & retail | 2013 |
| WE ARE Create & Print Ltd | Manufacturing | 2022 |
| Webkiss Limited | Information & communication | 2014 |
| Webster Family Property Investments Ltd | Other services | 2023 |
| Weilai Midlands Ltd | Hospitality | 2023 |
| Wellington Express Discount Store Ltd | Wholesale & retail | 2014 |
| Wellman Thermal Engineering Limited | Professional & scientific | 1990 |
| West Administration Ltd | Financial services | 2024 |
| West Midlands KOI Ltd | Wholesale & retail | 2013 |
| Westbury Social Care Ltd | Health & social care | 2025 |
| Westren Film Production Ltd | Extraterritorial | 2023 |
| Whitebox Interior Solutions Limited | Construction | 2017 |
| WHY NOT Fade Ltd | Other services | 2024 |
| Wieslaw Transport Ltd | Transport & logistics | 2020 |
| WIR Administration Ltd. | Professional & scientific | 2023 |
| WMA Management Ltd. | Financial services | 2025 |
| Wolf Auto Locksmith Ltd | Wholesale & retail | 2024 |
| Women’S Club World Ltd | Administrative & support | 2025 |
| Wonder Years International Ltd | Other services | 2021 |
| Wonderful Gospel Ministries | Health & social care | 2016 |
| Wondersoft Services Limited | Construction | 2022 |
| Woodward Consultancy Ltd | Professional & scientific | 2025 |
| Word Language Services Limited | Professional & scientific | 2015 |
| Work Edge Limited | Professional & scientific | 2025 |
| Wynnovate Ltd | Information & communication | 2024 |
| Wyvern Group Limited | Real estate | 1993 |
| Xineloyd Ltd. | Financial services | 2026 |
| Xtra MED Limited | Health & social care | 2006 |
| Y&B Convenience Store Ltd | Wholesale & retail | 2024 |
| YG Logistics Limited | Transport & logistics | 2025 |
| YNA Cars UK Ltd | Wholesale & retail | 2026 |
| Young Asylum CIC | Real estate | 2025 |
| Your Urban Nest Ltd | Construction | 2025 |
| Z Cuts Barber Ltd | Other services | 2025 |
| Zakurah Ltd | Hospitality | 2025 |
| ZAP Coffee Ltd | Hospitality | 2017 |
| ZEB Telecom Ltd | Information & communication | 2016 |
| Zenith Commercial Limited | Households | 2019 |
| Zoozly Ltd | Professional & scientific | 2023 |
| Zulfiis Ltd | Wholesale & retail | 2020 |