| Well Excited Limited | Financial services | 2012 |
| Well Excited Talent Limited | Administrative & support | 2012 |
| Wellcroft at Worsbrough Village Management Limited | Real estate | 2004 |
| Welldale Developments Ltd | Real estate | 2024 |
| Welldale Group Limited | Financial services | 2019 |
| Wellfoods Limited | Wholesale & retail | 1999 |
| Wellgate Business Limited | Wholesale & retail | 2013 |
| Wellhouse Leisure Ltd | Manufacturing | 2002 |
| Wellincharm Limited | Hospitality | 1998 |
| Wellington Mews (Matlock) Management Company Limited | Households | 2011 |
| Wellington Street Leisure Ltd | Hospitality | 2021 |
| Wellspring Academy Trust | Education | 2012 |
| Wellyaremo Limited | Other services | 2025 |
| Wellybans Ltd | Construction | 2023 |
| Wendy's Carpets & Curtains Limited | Wholesale & retail | 1999 |
| Wentworth Builders Limited | Construction | 2016 |
| Wentworth Coaching Ltd | Professional & scientific | 2023 |
| Wentworth Court Limited | Households | 2007 |
| Wentworth Hardware Co Ltd | Wholesale & retail | 2026 |
| Wentworth Precision Engineering Ltd | Manufacturing | 2020 |
| Wentworth Productions Ltd | Information & communication | 2017 |
| Wentworth Road Service Station Ltd | Wholesale & retail | 2022 |
| Wentworth Steels Limited | Wholesale & retail | 2005 |
| Wentworth Surveys Limited | Wholesale & retail | 2007 |
| Wentworth Window Cleaning Ltd | Administrative & support | 2019 |
| West + Moat Limited | Administrative & support | 2025 |
| West Green Recycling Limited | Water & waste | 2014 |
| West Laithe Limited | Real estate | 2021 |
| West Riding Window Cleaning Ltd | Other services | 2011 |
| Westbank Restorations Limited | Construction | 2005 |
| Westerman Associates Ltd | Health & social care | 2018 |
| Westfield Green Management Limited | Households | 2019 |
| Westfield Land Limited | Construction | 2026 |
| Westfield Park Activity Centre Limited | Arts & recreation | 1998 |
| Westgate Garage Limited | Wholesale & retail | 2002 |
| Westgate Investments (Yorkshire) Ltd | Construction | 2021 |
| Westies 1971 LLP | | 2014 |
| Westmoreland Window Cleaning Limited | Administrative & support | 2013 |
| Westwood Sporting Clays Limited | Arts & recreation | 2017 |
| WET INK Limited | Other services | 2023 |
| WF Boxing Shop Limited | Wholesale & retail | 2026 |
| Wharam Services Ltd | Transport & logistics | 2025 |
| What a Kebab Barnsley Ltd | Hospitality | 2025 |
| Wheel Magic Limited | Wholesale & retail | 2016 |
| Wheel Medic Ltd | Other services | 2019 |
| Wheel Wizard (Yorkshire) Ltd | Manufacturing | 2014 |
| Whet Wellbeing Limited | Health & social care | 2016 |
| Whisky Mist Barnsley Ltd | Hospitality | 2022 |
| Whitcher Wildlife Holding Limited | Financial services | 2022 |
| Whitcher Wildlife Limited | Administrative & support | 2002 |
| White Agus Limited | Professional & scientific | 2023 |
| White Apple Thinking Ltd | Professional & scientific | 2012 |
| White Cross Plus Ltd | Health & social care | 2025 |
| White Cross Plus Properties Ltd | Real estate | 2025 |
| White Hart Capital Limited | Financial services | 2026 |
| White Hawk Goods Ltd | Construction | 2026 |
| White Label Marketing Ltd | Professional & scientific | 2026 |
| White Oak Joiners Ltd | Construction | 2025 |
| White Rose Door Systems Ltd | Manufacturing | 2025 |
| White Rose Fertility Limited | Health & social care | 2025 |
| White Rose Interiors Limited | Wholesale & retail | 2007 |
| White Rose Laboratory Services Limited | Construction | 2014 |
| White Rose NDT Limited | Manufacturing | 2013 |
| White Rose Property Solutions Limited | Real estate | 2025 |
| White Rose Support Services Ltd | Education | 2016 |
| White Wolf Maintenance Limited | Administrative & support | 2025 |
| White's Healthcare Ltd | Health & social care | 2022 |
| Whitehill Search Ltd | Administrative & support | 2020 |
| Whitehouse Wealth Management Limited | Financial services | 2019 |
| Whites Community Care (Barnsley) Ltd | Public administration | 2023 |
| Whitesmile UK Ltd | Wholesale & retail | 2007 |
| Whiteways Construction Limited | Construction | 2025 |
| Whitley Willows (2) Management Company Limited | Households | 2007 |
| Whitley Willows Management Company Limited | Households | 2007 |
| Whitshaw Aggregates Ltd | Wholesale & retail | 2020 |
| Whitshaw Builders (Yorkshire) Ltd | Construction | 2019 |
| Whitshaw Builders Ltd | Construction | 2012 |
| Whitshaw Developments Holdings Limited | Financial services | 2025 |
| Whitshaw Developments Ltd | Construction | 2018 |
| Whitshaw Developments Rentals Ltd | Real estate | 2025 |
| Whitshaw Holdings Limited | Financial services | 2021 |
| Whitshaw Homes Ltd | Construction | 2018 |
| Whittaker Plumbing & Heating Ltd | Construction | 2021 |
| Whittlestone Financial Services Ltd | Financial services | 2023 |
| Whoop Cars Ltd | Wholesale & retail | 2023 |
| Whoop Wants Your Car Ltd | Wholesale & retail | 2025 |
| Wickham & Taylor Limited | Wholesale & retail | 2013 |
| Wiggly Bums & Bubbles Ltd | Other services | 2024 |
| Wikimart Ltd | Wholesale & retail | 2017 |
| Wilbys Limited | Real estate | 2002 |
| Wild Beauty Cosmetics Limited | Wholesale & retail | 2026 |
| Wildberries Ltd | Wholesale & retail | 2023 |
| Wildcats Barnsley Ltd | Arts & recreation | 2022 |
| Wilde Boxes Ltd | Wholesale & retail | 2019 |
| Wilder by Holly Limited | Wholesale & retail | 2016 |
| Wildsmith Workshop Limited | Wholesale & retail | 2024 |
| Wildstart Finance Limited | Real estate | 2010 |
| Wilfred Kent Transport Ltd | Transport & logistics | 2016 |
| Wilkinson Lloyd Consulting Associates Ltd | Professional & scientific | 2016 |
| Wilkinson Media Limited | Information & communication | 2022 |