| WB Paving Ltd | Administrative & support | 2019 |
| WB Sports Ltd | Manufacturing | 2024 |
| WBD (Holdings) Limited | Financial services | 2024 |
| WBD Global Limited | Professional & scientific | 2014 |
| WBD Properties Limited | Real estate | 2023 |
| WCG Holdings Limited | Financial services | 2024 |
| WD Landscapes Ltd | Manufacturing | 2020 |
| WDA Co. Ltd | Real estate | 2020 |
| Wdjd Limited | Other services | 2019 |
| WDS Midlands Limited | Manufacturing | 2003 |
| WE ARE Defy Limited | Professional & scientific | 2022 |
| WE ARE Griots Ltd | Information & communication | 2021 |
| WE ARE the Hookup Limited | Administrative & support | 2020 |
| WE Buy ANY Motor Caravan Limited | Extraterritorial | 2015 |
| WE CAN Together | Education | 2018 |
| WE Care Residential Limited | Health & social care | 2024 |
| WE Clear ANY Drains Ltd | Water & waste | 2012 |
| WE Empower Ltd | Professional & scientific | 2020 |
| WE Live Here Ltd | Information & communication | 2024 |
| WE SAY Play Community Interest Company | Education | 2021 |
| WE Store Ltd | Transport & logistics | 2023 |
| Wealth Assets Ltd | Real estate | 2019 |
| Wealth Peak Company Limited | Information & communication | 2025 |
| Wealthea Ltd | Real estate | 2018 |
| Wealthy Plus Ltd | Real estate | 2016 |
| Weavers Chase Residents Management Company Limited | Households | 2019 |
| Weavers Field Management Company Limited | Households | 2017 |
| Weavers Home Improvement Ltd | Manufacturing | 2022 |
| Weavers Point (Derby) Management Company Limited | Households | 2016 |
| Web & AI Devs Limited | Information & communication | 2025 |
| Web IT NOW Limited | Information & communication | 2013 |
| Web Systems (Nottingham) Limited | Transport & logistics | 2004 |
| Web Zero Digital Sustainability Ltd | Professional & scientific | 2026 |
| Webb's Services Ltd | Transport & logistics | 2011 |
| Webnicer Ltd | Information & communication | 2015 |
| Website Design Derby Ltd | Information & communication | 2017 |
| Webster Bros. Developments Limited | Real estate | 2002 |
| Webster Tattoo Ltd | Arts & recreation | 2021 |
| Webtistic Limited | Information & communication | 2009 |
| Webuycycles Ltd | Wholesale & retail | 2016 |
| WECARE24 Medical Services Limited | Health & social care | 2014 |
| Wedge Ceramic Workshop Ltd | Manufacturing | 2026 |
| Wedocomms Ltd | Construction | 2025 |
| Wefixanyfone Ltd | Other services | 2022 |
| Wefixonline Limited | Other services | 2023 |
| Weir Green Technology Limited | Administrative & support | 2010 |
| Weird Lime Ltd | Professional & scientific | 2008 |
| Weird Wolf Ltd | Information & communication | 2021 |
| Welcome Healthcare Ltd | Health & social care | 2021 |
| Welcome Home Concierge Ltd | Transport & logistics | 2026 |
| Welfare Healthcare (UK) Ltd | Wholesale & retail | 2013 |
| Welfare Healthcare Partnership Ltd | Wholesale & retail | 2020 |
| Well Dressed Limited | Manufacturing | 2024 |
| Well Medical Services Ltd | Health & social care | 2021 |
| Wellbeing Clinics (UK) Limited | Health & social care | 1999 |
| Wellbeing Property Limited | Real estate | 2000 |
| Wellbeing Whizz Ltd | Health & social care | 2023 |
| Wellbury Diagnostics Limited | Health & social care | 2014 |
| Wellings Trading Ltd | Wholesale & retail | 2024 |
| Wellmar Investments Ltd | Real estate | 2025 |
| Wellness London Ltd | Other services | 2025 |
| Wellness Services Limited | Health & social care | 2019 |
| Wellspring Marketing Limited | Information & communication | 2018 |
| Welovepaws Ltd | Other services | 2023 |
| Welsh Slate Limited | Extraterritorial | 2007 |
| Weluxx Ltd | Manufacturing | 2025 |
| Wendigo Events Ltd | Administrative & support | 2026 |
| Wenlock Eggs Limited | Agriculture & fishing | 2020 |
| Wesco Aircraft Emea, Ltd. | Transport & logistics | 2016 |
| Wesco Aircraft Europe, Ltd | Wholesale & retail | 1984 |
| Wesco Aircraft International Holdings Limited | Financial services | 2016 |
| Wescom KDL Holdings Limited | Financial services | 2023 |
| Wescom KDL Limited | Manufacturing | 2004 |
| Wescom Signal and Rescue Group International Limited | Financial services | 2020 |
| Wescom Signal and Rescue International Limited | Financial services | 2020 |
| Wescom Signal and Rescue UK Limited | Manufacturing | 1994 |
| Wesley’S Valeting and Detailing Limited | Administrative & support | 2023 |
| Wesmat Ltd | Health & social care | 2017 |
| Wesmid Engineering Company Limited | Manufacturing | 1960 |
| Wesson Loadmaster Services Limited | Transport & logistics | 2015 |
| West 36 Consulting Limited | Professional & scientific | 2018 |
| West Afloat Ltd | Information & communication | 2019 |
| West Bridgford Property Ltd | Professional & scientific | 2026 |
| West Coast Martial Arts Academy Ltd | Education | 2025 |
| West Coast Martial Arts Success Ltd | Administrative & support | 2022 |
| West Coast Service Provision Limited | Manufacturing | 1998 |
| West Coast Traincare Limited | Manufacturing | 1998 |
| West Hallam Engineering Limited | Wholesale & retail | 2010 |
| West Herts Electrical Ltd | Construction | 2019 |
| West Longbridge Management Company Limited | Households | 2022 |
| West Park School | Education | 2011 |
| West Road Haulage Ltd | Transport & logistics | 2013 |
| West Technologies Limited | Information & communication | 2017 |
| Westburn Village (Hebburn) Management Company Limited | Households | 2018 |
| Westbury Day Nursery Limited | Education | 2015 |
| Westcote Group Limited | Construction | 2020 |
| Westcroft Developments Limited | Construction | 2023 |
| Westdale Lane Management Company Ltd | Households | 2008 |
| Westdale Private Dental Ltd | Health & social care | 2017 |
| Westdene Capital Limited | Real estate | 2012 |