| Wolds Park Homes Ltd | Hospitality | 2020 |
| Wolds Veterinary Clinic Ltd | Professional & scientific | 2011 |
| Wollies Ltd | Wholesale & retail | 2026 |
| Womb With a View Grimsby Ltd | Health & social care | 2023 |
| Women's AID Property Management Ltd | Households | 2024 |
| Wonderland Events Limited | Arts & recreation | 2022 |
| WOO 360 Ltd | Information & communication | 2018 |
| Woodall Engineering Services Ltd | Wholesale & retail | 2025 |
| Wooden ARK Limited | Professional & scientific | 2003 |
| Woodholme Smokery Limited | Wholesale & retail | 2022 |
| Woodland Grove (Market Rasen) Management Company Limited | Households | 2004 |
| Woodland Motor Traders Limited | Wholesale & retail | 2017 |
| Woodlands Retail Limited | Wholesale & retail | 2019 |
| Woodlands Waltham Limited | Households | 2019 |
| Woodlandz Furnishings GY Ltd | Wholesale & retail | 2023 |
| Woods (Waltham) Limited | Construction | 2017 |
| Woods Courses and Information Services Ltd | Information & communication | 2022 |
| Woods Electrical Services Ltd | Construction | 2019 |
| Woodstock Forest Products Ltd | Wholesale & retail | 2021 |
| Woodstock Resources Ltd | Transport & logistics | 2021 |
| Woodthorpe Lincs Limited | Real estate | 2026 |
| Work Balance Recruitment Solutions Limited | Administrative & support | 2025 |
| Worldlets Ltd | Hospitality | 2013 |
| Worldwide Executive Travel Services Ltd | Administrative & support | 2018 |
| Wotrans Ltd | Transport & logistics | 2015 |
| Would France Limited | Professional & scientific | 2007 |
| Wptr Limited | Manufacturing | 2014 |
| WR Gaskets Limited | Manufacturing | 2006 |
| Wrbservices Ltd | Administrative & support | 2012 |
| Wrestling League Limited | Arts & recreation | 2019 |
| Wright Renewable Access Ltd | Professional & scientific | 2026 |
| Wristaura Ltd | Wholesale & retail | 2025 |
| Wrmh Group Ltd | Financial services | 2021 |
| WS Electrical and Home Maintenance Ltd | Construction | 2023 |
| Wybers Chippy Limited | Hospitality | 2020 |
| Wybers Pizza Palace Limited | Hospitality | 2025 |
| Wyham Agricultural Limited | Other services | 2024 |
| Wyphy.Net Limited | Information & communication | 2012 |
| X I Skips Limited | Water & waste | 2015 |
| Xanda Consulting Limited | Information & communication | 2000 |
| Xceco Limited | Professional & scientific | 2016 |
| Xceco Trustees Limited | Administrative & support | 2023 |
| Xchange Investments Ltd | Wholesale & retail | 2012 |
| Xeinadin Humber Limited | Professional & scientific | 2023 |
| XO Training Limited | Wholesale & retail | 2017 |
| Xohho Ltd | Wholesale & retail | 2014 |
| XOS (UK) Limited | Administrative & support | 2007 |
| Xperiencex Ltd | Administrative & support | 2024 |
| Xpress Delivery Limited | Wholesale & retail | 2009 |
| Xscape Health and Fitness Ltd | Arts & recreation | 2018 |
| XYZ Media Limited | Information & communication | 2016 |
| Y & G Keser Ltd | Real estate | 2025 |
| Y & R Investments Limited | Real estate | 2019 |
| Y Delves Limited | Agriculture & fishing | 2022 |
| Y Food Solutions Limited | Administrative & support | 2017 |
| Yaaar Holdings Limited | Real estate | 2023 |
| Yahuda Limited | Health & social care | 2022 |
| Yanis&Cosmin Limited | Transport & logistics | 2025 |
| Yarborough Academy | Education | 2012 |
| Yardbirds Rock Club Limited | Hospitality | 2007 |
| Yarm Estimating Ltd | Professional & scientific | 2024 |
| Yarra Road Limited | Real estate | 2022 |
| Yates Quality Fish Limited | Other services | 2010 |
| Yebosoko UK Limited | Wholesale & retail | 2024 |
| Yellerbelly Creative Limited | Information & communication | 2025 |
| Yemfri Medics Ltd | Health & social care | 2023 |
| Yeoman Law Limited | Professional & scientific | 2022 |
| Ygar Invest Ltd | Transport & logistics | 2026 |
| Ymca Humber Limited | Arts & recreation | 2023 |
| YNA Three Brothers Ltd | Hospitality | 2024 |
| Yolo Heat Ltd | Construction | 2026 |
| Yomra Barbers Ltd | Other services | 2025 |
| Yorkgate Projects Ltd | Construction | 2023 |
| Yorkshire & Humber Grounds Maintenance Limited | Administrative & support | 2026 |
| Yorpic Ltd | Real estate | 2019 |
| Young's Seafood International Holdings Limited | Administrative & support | 1998 |
| Young's Seafood Limited | Manufacturing | 1999 |
| Youngbucks Ltd | Wholesale & retail | 2020 |
| Youngs Bluecrest Pension Trustees Limited | Professional & scientific | 1999 |
| Youngs Cars Ltd | Wholesale & retail | 2013 |
| Your Easy Way Limited | Professional & scientific | 2004 |
| Yourphysio Rehab Limited | Health & social care | 2024 |
| Youth Revisited Ltd | Health & social care | 2017 |
| YPG Aigburth Ltd | Real estate | 2019 |
| YPG Strawberry Fields Ltd | Manufacturing | 2016 |
| Yubalay Ltd | Hospitality | 2025 |
| Yuuzuu Limited | Information & communication | 2014 |
| Yvette Hannay Properties Ltd | Real estate | 2019 |
| Zafrom Limited | Health & social care | 2017 |
| Zahariapharms Ltd | Wholesale & retail | 2019 |
| Zaki Charles Photography Ltd | Arts & recreation | 2018 |
| Zakon Training Limited | Education | 2015 |
| ZAM ZAM International Food Store Ltd | Wholesale & retail | 2024 |
| ZAP Enterprises Limited | Financial services | 2019 |
| ZBR Performance Limited | Wholesale & retail | 2019 |
| Zebedee ANY Angle Ltd | Manufacturing | 2020 |
| Zelish Ltd | Hospitality | 2025 |
| Zellmor Services Limited | Health & social care | 2011 |
| ZEM Interiors Ltd | Professional & scientific | 2025 |
| ZEN River Limited | Wholesale & retail | 2023 |