| Willow Lakes 002 Limited | Professional & scientific | 2024 |
| Willow Lakes 003 Limited | Professional & scientific | 2024 |
| Willow Rise Management Company Limited | Households | 2022 |
| Willow Tree Flooring Company Leicestershire Limited | Construction | 2025 |
| Willow Tree Property & Developments Ltd | Construction | 2018 |
| Willowbrook Care Services Ltd | Health & social care | 2023 |
| Willowbrook Collection Ltd | Construction | 2025 |
| Willowfox Finance Limited | Real estate | 2015 |
| Willownest Ltd | Real estate | 2025 |
| Willownest Properties Ltd | Real estate | 2025 |
| Willows Academy UK Ltd | Professional & scientific | 2023 |
| Willows Canon Street Property Limited | Real estate | 2025 |
| Willows Crossley Ltd | Health & social care | 2025 |
| Willows Evington Property Ltd | Real estate | 2022 |
| Willows Group Ltd | Health & social care | 2015 |
| Willows Pharma Ltd | Wholesale & retail | 2023 |
| Willows Property Ventures Limited | Real estate | 2020 |
| Willows-Coleman Road Ltd | Other services | 2021 |
| Willprints Limited | Manufacturing | 2003 |
| Willsdon Arros Ltd | Wholesale & retail | 2025 |
| Willsmer Consulting Limited | Administrative & support | 2011 |
| Willson Consultancy Limited | Information & communication | 1997 |
| Willsow Limited | Wholesale & retail | 2019 |
| Wilman & Partners Ltd | Financial services | 2018 |
| Wilmslow Audio Limited | Wholesale & retail | 1996 |
| Wilpbond Limited | Manufacturing | 1977 |
| Wilson & Jacques Limited | Construction | 2015 |
| Wilson & Sloane Ltd | Wholesale & retail | 2009 |
| Wilson Alarm Systems Limited | Administrative & support | 1982 |
| Wilson Derby Properties Ltd | Real estate | 2025 |
| Wilson Fink (Midlands) Limited | Wholesale & retail | 2014 |
| Wilson Hamil Ltd | Wholesale & retail | 2025 |
| Wilson Legacy Investments Ltd | Real estate | 2024 |
| Wilson Osborne Services Limited | Professional & scientific | 2018 |
| Wilson's Property Investors Ltd | Real estate | 2023 |
| Wilton Property Group Holdings Limited | Real estate | 2016 |
| Wiltten Ltd | Transport & logistics | 2019 |
| Wimpole HER Ltd | Health & social care | 2023 |
| WIN Consultants Ltd | Wholesale & retail | 2017 |
| WIN Remedies Limited | Health & social care | 2020 |
| Win-Pro Ltd | Administrative & support | 2016 |
| Wincub Limited | Construction | 2018 |
| Wincub Management Ltd | Real estate | 2024 |
| Wind UP Bird Limited | Arts & recreation | 2006 |
| Wind V Logistics Limited | Transport & logistics | 2025 |
| Windermere Capital Investments Ltd | Real estate | 2016 |
| Windermere Capital Limited | Real estate | 2017 |
| Windermere Grocery Ltd | Wholesale & retail | 2024 |
| Winders Electrical Contractors Limited | Construction | 2015 |
| Winders Group Limited | Financial services | 2019 |
| Winding Machinery Services Limited | | 1976 |
| Winding Services Limited | Manufacturing | 2010 |
| Windlehurst Transport Ltd | Transport & logistics | 2014 |
| Windmill Business Consulting Limited | Information & communication | 2023 |
| Windmill Road Developments Limited | Construction | 2014 |
| Windmill Road Management Company Limited | Households | 2016 |
| Windmill Road Properties Limited | Real estate | 2016 |
| Window FIX Glass Ltd | Construction | 2023 |
| Window Tech (Leicester) Limited | Construction | 2008 |
| Window Warehouse Architectural Ltd | Construction | 2022 |
| Windoworld 21 Limited | Construction | 2020 |
| Windoworld 86 Limited | Construction | 2020 |
| Windridge Ltd | Households | 2010 |
| Windrush Accountancy Services Limited | Real estate | 2010 |
| Wine and Dine Limited | Hospitality | 2023 |
| Wine City Ltd | Wholesale & retail | 2022 |
| Wines Cellars Limited | Manufacturing | 2013 |
| Winext Limited | Administrative & support | 2024 |
| Winfields Bookkeeping Limited | Professional & scientific | 2010 |
| Winfox Limited | Construction | 2018 |
| Wing Training Ltd | Education | 2011 |
| Wingfan GB Limited | Manufacturing | 2006 |
| Wingfield Air Conditioning Limited | Construction | 2023 |
| Wingshack Leicester Ltd | Hospitality | 2018 |
| Wininfy UK Ltd | Information & communication | 2024 |
| Winit UK Supply Chain Limited | Administrative & support | 2023 |
| Winkadale Close (Bushby) Management Ltd | Households | 2015 |
| Winkadale Estates Limited | Real estate | 2025 |
| Winkadale Estates NO 10 Limited | Real estate | 2026 |
| Winkadale Estates NO 2 Limited | Real estate | 2025 |
| Winkadale Estates NO 3 Limited | Real estate | 2025 |
| Winkadale Estates NO 4 Limited | Real estate | 2025 |
| Winkadale Estates NO 5 Limited | Real estate | 2025 |
| Winkadale Estates NO 6 Limited | Real estate | 2025 |
| Winkadale Estates NO 7 Limited | Real estate | 2025 |
| Winkadale Estates NO 8 Limited | Real estate | 2025 |
| Winkadale Estates NO 9 Limited | Real estate | 2026 |
| Winkadale Holdings Limited | Financial services | 2019 |
| Winkfield Park Developments Ltd | Real estate | 2017 |
| Winnens Holdings Ltd | Professional & scientific | 2021 |
| Winrise Bravo Limited | Construction | 2017 |
| Winrise One Ltd | Construction | 2017 |
| Winslow Solutions Ltd | Transport & logistics | 2015 |
| Winston Rhodes Limited | Transport & logistics | 2019 |
| Winters 82 Limited | Professional & scientific | 2024 |
| Winters Forge Games Ltd | Wholesale & retail | 2026 |
| Winterstone Productions Ltd | Information & communication | 2025 |
| Winterton Property Limited | Real estate | 2017 |
| Winvision Ltd | Health & social care | 2021 |
| Winzar York Limited | Professional & scientific | 2015 |