| Westcroft Domestic & Commercial Cleaning Ltd | Administrative & support | 2020 |
| Westcroft KOI Ltd | Wholesale & retail | 2023 |
| Westcroft Nurseries Ltd | Agriculture & fishing | 2018 |
| Western International Group (UK) Ltd | Wholesale & retail | 2018 |
| Western Park Leicester Limited | Health & social care | 2000 |
| Western Trading Store Limited | Real estate | 1980 |
| Westfield Court East Residents Association Limited | Extraterritorial | 1997 |
| Westfield Court West Residents Association Limited | Households | 1997 |
| Westgate Care Services Ltd | Public administration | 2018 |
| Westhill Commercial Properties Limited | Real estate | 2024 |
| Westmid Financial Services Limited | Financial services | 1996 |
| Westminster Industrial Estate 1 Limited | Administrative & support | 2015 |
| Westminster Industrial Estate 2 Limited | Construction | 2023 |
| Weston Lawn Fisheries Limited | Agriculture & fishing | 2014 |
| Weston Lawn Waterfront Lodges Limited | Hospitality | 2022 |
| Weston Lawns Cafe and Shop Limited | Wholesale & retail | 2014 |
| Weston Lawns LOG Cabins Limited | Hospitality | 2014 |
| Westside Traders Ltd | Wholesale & retail | 2023 |
| Westway Lubricants Ltd | Wholesale & retail | 2014 |
| Westwood (Wholesale Foods) Limited | Professional & scientific | 1968 |
| Westwood Made Ltd | Manufacturing | 2024 |
| Wffl Ltd | Arts & recreation | 2023 |
| Wfopt Limited | Health & social care | 2025 |
| Wfrc Care Ltd | Administrative & support | 2022 |
| Wfrc Ltd | Wholesale & retail | 2020 |
| WGP Management Ltd | Real estate | 2026 |
| Whakapapa Limited | Financial services | 2020 |
| Whale Trade Ltd | Wholesale & retail | 2026 |
| Whale Verse Support Network CIC | Health & social care | 2025 |
| Whanau Nominees Limited | Professional & scientific | 2023 |
| Wharf Street Property Limited | Real estate | 2025 |
| Whatlings Public Limited Company | Professional & scientific | 1935 |
| Whattoys Ltd | Wholesale & retail | 2026 |
| Wheel Vision Group Limited | Financial services | 2011 |
| Wheel Vision Limited | Wholesale & retail | 2024 |
| Where 4 Care Limited | Other services | 2023 |
| Whetstone Green Ltd | Wholesale & retail | 2022 |
| Whimvern Ltd | Transport & logistics | 2021 |
| Whispering Tales Photography Ltd | Professional & scientific | 2026 |
| Whiston Hall Farm Ltd | Agriculture & fishing | 2025 |
| Whitburn CRT Limited | Households | 2023 |
| White Bay Properties (Midlands) Limited | Real estate | 2024 |
| White Bear Digital Ltd | Information & communication | 2019 |
| White Diamond Ltd | Wholesale & retail | 2022 |
| White Hawk Logistics Ltd | Transport & logistics | 2025 |
| White Hawk Property Investments Ltd | Construction | 2022 |
| White Mountain SKI Limited | Wholesale & retail | 2010 |
| White Rose Health Ltd | Administrative & support | 2019 |
| White Water Construction Ltd | Water & waste | 2024 |
| White Willow Recording Studio Ltd | Information & communication | 2023 |
| White Wolf Fine Art & Antiques Limited | Wholesale & retail | 2017 |
| Whitedot Ltd | Information & communication | 2024 |
| Whitehouse Hospitality Ltd | Hospitality | 2025 |
| Whitepebble Investments Limited | Real estate | 2024 |
| Whites Property (Midlands) Ltd | Real estate | 2020 |
| Whiteshed Healthcare Ltd | Health & social care | 2020 |
| Whitgreave Sports Ltd | Wholesale & retail | 2025 |
| Whitlock & Lowe (Holdings) Ltd | Financial services | 2024 |
| Whitlock & Lowe Ltd | Manufacturing | 1997 |
| Whitmore Reans Club Limited | Hospitality | 2019 |
| Whitmore Reans Glass Ltd | Wholesale & retail | 2013 |
| Whitmore Reans Plumbers Merchants Limited | Wholesale & retail | 2005 |
| Whitmore Reans Services Limited | Real estate | 2010 |
| Whitmore Ventures Limited | Extraterritorial | 2014 |
| Whittlesey Power Limited | Energy | 2024 |
| Whizpop Creative Ltd | Professional & scientific | 2025 |
| Whizz Energy Ltd | Energy | 2023 |
| Wholesale Baby Goods Ltd | Wholesale & retail | 2023 |
| Wholesale Crystals UK Ltd | Wholesale & retail | 2023 |
| Wholesale Suppliers Ltd | Wholesale & retail | 2025 |
| WI Logistics Limited | Transport & logistics | 2017 |
| Wickham Security Limited | Construction | 2006 |
| Wider Learning Limited | Education | 2014 |
| Wider Possibilities CIC | Education | 2020 |
| Wiggzdom Limited | Wholesale & retail | 2023 |
| Wightwick & Regis Enterprise Network | Administrative & support | 2002 |
| Wightwick Advisory Limited | Professional & scientific | 2022 |
| Wightwick Investments Limited | Real estate | 2025 |
| Wightwick Lodge Developments Limited | Construction | 2026 |
| Wightwick Orthodontics Ltd | Health & social care | 2018 |
| Wightwick Risk Management Limited | Financial services | 2025 |
| Wightwick UK Ltd | Real estate | 2018 |
| Wigley Logistics Ltd | Transport & logistics | 2013 |
| Wigzo Play Limited | Extraterritorial | 2025 |
| Wild Again Group Ltd | Arts & recreation | 2026 |
| Wild Campers Against Waste Community Interest Company | Professional & scientific | 2020 |
| Wild Cat Cocktails Ltd | Wholesale & retail | 2017 |
| Wild Thing Yachting Ltd | Arts & recreation | 2023 |
| Wildermade Studio Ltd | Information & communication | 2024 |
| Wildman Property 1 Ltd | Real estate | 2021 |
| Wildside Activity Centre | Education | 1996 |
| Wilkinson Educational Services Limited | Education | 2024 |
| Will Interiors Ltd | Construction | 2013 |
| Willden Vent Ltd | Construction | 2026 |
| Willenhall Bathrooms & Kitchens Limited | Construction | 2012 |
| Willenhall Service Station Limited | Wholesale & retail | 2024 |
| Willenhall Wings Co Limited | Hospitality | 2026 |
| Willeos & a Cleaning Services Ltd | Administrative & support | 2026 |
| Williams & Dunne Limited | Financial services | 2016 |
| Williams Bros Investments Ltd | Wholesale & retail | 2014 |